21ˢᵗ Century 124 Spider ~ Complete Specifications & Helpful Tidbits

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technical-specifications2

North American market specific – some specs may differ in other markets
[ 124 RALLY specs are listed separately here ]


124 SPIDER ~ GENERAL INFORMATION
Platform: MAZDA/FCA joint partnership was established to share costs developing the 4ᵗʰ generation of N-platform roadsters, since they were considered to be low-volume niche vehicles for both brands:
half n halfND: 4ᵗʰ generation MAZDA MX-5, introduced 1 year earlier than the 124 Spider*
NF: FIAT and ABARTH iterations of 124 Spiders 

Assembly Plant: Hiroshima, Japan (MAZDA’s same plant that produces ND MX-5); Note: ABARTHs requiring the “Heritage stripe” option, were finished up in either Turin, Italy or Detroit, Michigan, depending on their final destination.
FIAT vs ABARTH:

ABARTH is a subsidiary of FIAT (technically now FCA Italy SpA) that focuses on the production of performance vehicles for race and road.  FIAT is a separate company that produces the “base” versions of the vehicles upon which ABARTH versions are based.  Note: In North America, since no dealer network existed for the ABARTH brand, they were marketed as a third “performance” trim level of the FIAT brand instead.

Drivetrain: Front-midship engine, rear wheel drive (RWD)
Performance:

Zero to 60 mph: 6.8 seconds
60 mph to Zero (Braking with standard wheels / tires / brakes):
→ → Classica – 113 ft.
→ → Lusso – 110 ft.
→ → ABARTH –  104 ft.
Quarter Mile: 14.9 sec. @ 93.2 mph
Top Speed:  138 mph (144 mph for ABARTHs)
Drag Coefficient (Cd): 0.35 all models
Center of Gravity: 15.16 in. (38.5 cm)

Reliability:

Because the engine was improved upon during Dodge Dart production (2013-2016), the proven manual trans from the third generation (NC) of the MAZDA MX-5 was retained, and the rest of the vehicle was improved/proven by MAZDA during the MX-5 ND’s first year of production (2015; MY 2016), the 124 Spider’s overall reliability has proven to be excellent – the manual transmission models arguably surpassing the ND’s!

Safety Rating: 5 out of 5 stars (ANCAP)
Introduction Dates (MY = Model Year):
→ →FIAT 124 SPIDER Classica, Lusso: Summer 2016, as MY 2017
→ →FIAT 124 SPIDER – Abarth: Fall 2016 (North America), as MY 2017
→ →ABARTH 124 SPIDER: Summer 2016 (except North America),
→ →→ →→ →→ →→ →→ →→ →→ →as MY 2017
→ →ABARTH 124 SPIDER TURISMO: Fall 2016 (Europe), as MY 2017
→ →ABARTH 124 RALLY: Fall 2016 (Europe); click here for RALLY specs
→ →ABARTH 124 GT: Spring 2018 (Europe); click here for GT article
→ →ABARTH 124 RALLY TRIBUTE: Spring 2019 (Europe); click here for
→ →→ →→ →→ →→ →→ →→ →→ →RALLY TRIBUTE article
Build Markets: Global (LHD & RHD configurations)
Production Model Years (MY): 2017 through 2020; (in Europe, last MY was 2019, since the 1.4 L MultiAir engine was no longer capable of meeting newly-mandated stricter WLPT emissions regulations)
“A Brief History of the Classic and Modern Fiat 124 Spider”: Watch this great informative video produced this year by Tazilon, debuting on “our” day,  1/24
Total Sales by region (45,000+):
→ →♦ United States: 15,778
→ →Europe: 23,978
→ →Japan: ≅ 3,000
→ →Canada: 1,565
→ →♦ Australia: ≅ 690
→ →elsewhere: ??
Sales by MY (source):
→ →2016 : 3,717 (Europe); 2,475 (United States); 258 (Canada)
→ →2017 : 7,831 (Europe); 4,478 (United States); 601 (Canada)
→ →2018 : 7,637 (Europe); 3,515 (United States); 284 (Canada)
→ →2019 : 4,717 (Europe); 2,644 (United States); 205 (Canada)
→ →2020 : 76 (Europe); 1,711 (United States); 165 (Canada)
→ →2021 : 955 (United States); 52 (Canada)
Zero to 60 mph: 6.8 seconds
60 mph to Zero (Braking with standard wheels / tires / brakes):
→ → Classica – 113 ft.
→ → Lusso – 110 ft.
→ → ABARTH –  104 ft.
Quarter Mile: 14.9 sec. @ 93.2 mph
Top Speed:  138 mph (144 mph for ABARTHs)
Drag Coefficient (Cd): 0.35 all models
Center of Gravity: 15.16 in. (38.5 cm)
FIAT 124 Spider 2017 Owner’s Manual (Canada): pdf
FIAT 124 Spider 2018 Owner’s Manual (U.S.): pdf
ABARTH 124 Spider 2018 Owner’s Manual (Canada): pdf
FIAT 124 Spider 2019 Owner’s Manual (Canada): pdf
ABARTH 124 Spider 2019 Owner’s Manual (Canada): pdf
FIAT 124 Spider 2020 Owner’s Manual (Canada): pdf
FIAT 124 Spider Service Manual on USB: MOPAR Tech Authority 81-270-20084-SUSB (see note)
FIAT 124 Spider Wiring Diagrams on USB: MOPAR Tech Authority 81-270-17084-WUSB
Other Online References
: 2016 MAZDA MX-5 manuals, FIAT 124 Spider Parts Catalog
Scheduled Service Plan (from FIAT Service Manual; this is what the “Scheduled Maintenance” function in the Maintenance App is referring to): Scheduled Service Plan
EPA Vehicle Class: Two-seater
Warranty (U.S.)
: First 4 years / 50,000 miles (whichever first occurs)
Emission Control Components Warranty (U.S.): Per Federal law, the ECM, OBDII and catalytic converter are covered for the first 8 years / 80,000 miles (whichever first occurs) 
Print your vehicle’s build sheet: Enter your full VIN #  here 

*  Typical first-year build quality issues were resolved in 2015 during the MY 2016 MX-5 production, leading to an uneventful Summer 2016 launch (in regards to build quality issues) of 124 Spiders.  The resolved issues included convertible top inner cloth and/or tension bands separating, low refrigerant leak from a poor-quality o-ring groove on the cooler pipe (high pressure side) at the expansion valve, and infotainment system version 55 firmware issues (⚫ Navigation or other screens freeze or reboot ⚫ Issues with Pandora Radio ⚫ USB device fails to start playing, resume or display music information ⚫ BT audio device fails when starting to play, resume or connect). 


124 SPIDER ~ BODY & CHASSIS
skyactiv-bodyhardtop1Layout: Monocoque unibody platform ⇑ ; RWD powertrain assembly featuring power plant frame (PPF); front and rear suspension sub-frames
Carbon Fiber composite: Removable   hardtop roof  (OEM with ABARTH 124 GT only) body aluminum
Aluminum body panels : Hood, front quarter panels, and decklid (for both the 124 Spider and the MX-5)

124 oem luggage rackOther aluminum components (for both the 124 Spider and the MX-5): front bumper reinforcement, chassis tunnel braces, power plant frame (PPF), differential casing, roll bar, rear bulkhead panel, rear bumper reinforcement, interior access panel, roof frame & header panel, wiring loom, front wishbones, belly pan, and wheel uprights.  Also, the luggage rack (OEM with FIAT 124 “America” only; otherwise optional MOPAR # 52060660).
Chassis construction
: High-tensile strength steel
Steel body panels
: Doors, rear quarter panels, narrow panel just ahead of decklid (for both the 124 Spider and the MX-5)
Magnetic CB antenna capability: yes, on horizontal surface of either rear quarter panel (non-existent on ND MX-5)
Windshield: OEM “Lamipane” windshields (for both the 124 Spider and the MX-5), are all manufactured in Osaka, Japan by Nippon Sheet Glass (NSG)/Pilkington.  See my article for replacement details
Trim fasteners
: nylon push-type retainers used throughout vehicle and nylon clips for door trim panels
tow hook1Front Tow Hook Cover (replacements):
→ →
Classica & Lusso: MOPAR # 68333157AA
→ →ABARTH: MOPAR # 6KF49TZZAA
Front Tow Hook (Steel)
: MOPAR # 68315340AA; should normally be found with tire-repair kit in trunk; fits either front or rear location (the shorter rear tow eye is usually recycled, but the occasional dealer tossed that in the trunk too)
Lifting Locations (with hoist or low-profile jack and slotted jack pad); more details

jack points

⚫ red = jack locations with slotted pad    ⚫ light blue = 2-post hoist lift with arms   ⚫ dark blue = jack stands, after lifting with jack


124 SPIDER ~ IGNITION START/STOP SWITCH
Ignition Switch : MOPAR # 68314297AA
Instructions (need key fob within operational range):

start stopIgnition Push Button Switch without pushing clutch pedal (MT) or brake pedal (AT):
Each time the keyless ignition START/STOP button is pushed, the ignition cycles in the order of OFF, ACC, ON, and back to OFF mode, without the engine ever starting.

Ignition Push Button Switch while  pushing clutch pedal (MT) or brake pedal (AT):
Each time the keyless ignition START/STOP button is pushed, the engine cycles in START or OFF mode.


124 SPIDER ~ ENGINE SPECS, REQUIREMENTS & CAPACITIES:

add’l engine categories:    
fuel & emissions      oil      cooling/coolant

Note:  The Engine Control Module is the one non-Mazda module not shared with the Miata, is produced for FIAT by Delphi in several regional iterations, and is most commonly referred to as the ECM.
Engine
: FIAT/Alfa Romeo 1.4 Liter, 16-valve, turbocharged, Multi-Air*, in-line four-cylinder (I-4) with multi-point fuel injection (MPFI) and variable valve timing (VVT) were all robot assembled & shipped from Termoli, Italy.  It’s a good thing the engine block was first used in the Alfa Romeo Mito <2008-2016>, FIAT Punto <2007-2014> and Dodge Dart <2013-2016> (all FWD cars), as additional oiling channels were added in the walls of the #2 and #3 cylinders in 2014, to resolve forced-induction lubrication issues.  The RWD 124 Spider is the first longitudinal installation application of this engine, requiring additional changes to the manifolds, oil pan + dipstick, vacuum pump, timing cover, intercooler, mounts, and engine cover.
Displacement: 83.48 cu. in. (1,368 cc)
Bore x Stroke: 2.835 in. x 3.307 in. (72.0 mm x 84.0 mm)
Bore-Stroke Ratio: 0.86:1
Cylinder Firing Order: 1 • 3 • 4 • 2 (# 1 is closest to the radiator, @ timing belt end of engine)
Timing Belt Change Interval: 150,000 miles (240,000 km); source (European manual shows 120,000 km?);

Pete124 suggested:  A potentially useful trick to avoid using special tools normally required for this belt change to lock the cam/crank (and subsequent TDC sensor calibration for the ECM by re-initializing via a “phonic wheel learning procedure”) is to slice the old belt in half longitudinally while still in place and remove the outer half. Slide the new belt on to the exposed cogs then cut the old belt away and push the new belt fully home (this means the water pump isn’t getting replaced though).  Thoughts?

Accessory Drive Belt Change Interval: 80,000 miles (128,000 km); if driven in dusty areas, change sooner
Intake Valve System: Instantaneous, fully variable intake valve lift and timing control of the 8 intake valves by belt-driven, Multi-Air* hydraulic actuator “brick”, replacing the overhead camshaft used in the T-jet version of this engine
Intake Valve Lobe Lift (max): 0.370 in. (9.3 mm)
Exhaust Valve System:
Single overhead camshaft that operates the 8 exhaust valves directly through inverted bucket tappets
Exhaust Valve Lobe Lift: 0.295 in. (7.5 mm)
Construction: Aluminum-alloy head and bed-plate; cast-iron block (details)
Compression Ratio: 9.8:1
Weight-to-Power Ratio: 15.2 lb./HP (vs 15.0 lb./HP for the MX-5)
RPM Limiter: ECM limits max. to 6,250 rpm (and 3,000 rpm, if AT is in Park/Neutral)
“Too-Cold” Disable: ECM disables the starter if the temperature is below -22° F (-30° C); Note: If you’d like to increase the cold-start range to -34°F, I suggest you consider adding a block heater.
Air Filter Change Interval: 30,000 miles (48,000 km) or 3 years (whichever comes first); if driven in dusty areas, inspect at every oil change, and change sooner, as warranted; source
Air Filter: MOPAR # 68335718AA is the specified replacement, however note that MAZDA installs as OEM, their PEES-13-3A0 filter (same as in the ND MX-5); equivalent substitutions can also be used, like WIX WA10424;  for additional replacement guidance: Pictorial air filter change ♦ Air filter change video
51izodvjwcl._ac_sl1500_Spark Plugs (4): NGK SIKR9A7 Laser Iridium mfd. with a generic 0.028 in. pre-gap (the more expensive MOPAR # SP070507AC and FIAT RICAMBI # 55244561 are the same plugs); a close “unofficial” alternative in U.K. (if unable to obtain spec plugs) is NHK DCPR9EIX (mfd. with a 0.032 in. pre-gap though).
→ →Note: The plug gap needs to be set ⇓ before installing! 
Spark Plug Gap Spec: 0.023 – 0.027 in. (0.6 – 0.7 mm) per FIAT Service Manual, however Eurocompulsion recommends 0.023  – 0.024 in.  for hi-perf. tunes, to prevent misfires at high revs. 
→ → For those that don’t monitor the gap, it is highly recommended that you set the gap to 0.023  – 0.024 in., so that it is unlikely to later deteriorate outside spec range.
→ →Avoid contacting iridium center electrode!
Spark Plug Change Interval
: Although this is normally a 100K mile plug, FIAT recommends replacement at 30,000 miles (48,000 km); source (actual real-life experience points to ≈ 25,000 miles
)
Spark Plug Socket
:  58 in. (need to remove cover and remove ignition coil packs first)

Spark Plug Torque: 13.5 ft.•lb. (18 N•m) per the manual; Note: oil and compression can slip by the spark plug threads, if the crush washer isn’t properly compressed.  Tork Motorsports insists that a proper torque should be 21 ft.•lb. (28 N•m) to nullify this from occurring.
Ignition Coil Packs (4): MOPAR # 68320163AA are OEM;
Notes: helpful video; Bosch # 0221504715 are good OEM alternatives;  coil wiring diagram
Spark Plug/Coil Pack Installation: application of dielectric grease inside boots at both ends of the spark plug wires, is strongly advised; procedure for replacing coil pack connector because of broken locking tab.
Wrench size for Ignition Coil Pack Mounting Bolts: 10 mm
Ignition Coil Pack Mounting Bolts Torque: 6.6 ft.•lb. (9 N•m)
Engine Mounts: Although the lower mount “perches” have a Mazda logo on the casting, do not order these parts from Mazda; details
Engine exchange note (thanks Calehedron): an engine mated to an automatic has a bell housing plate, vs. a 2-piece thin cover assembly and flywheel/clutch, when mated to a manual.
Re-calibrate Throttle (required after any ECM alterations):
→ →
♦  Ignition ON (not ACC; more)
→ →
♦  Press accel pedal to the floor 5X (within 10 seconds)
→ →
♦  Ignition OFF (for another 10 seconds)

Turbocharger:
→ →♦ MOPAR # 4892938AE
→ →♦ Garrett GT 1446 (much more robust than the IHI RHF3 turbo in the T-jet engine)
→ →Maximum Boost: @ 230,000 RPM; ECM limits max. boost to 22 psi / 2.49 bar; (great article on FIAT boost control)
Turbo Diverter (Surge) Valve: MOPAR # 4892991AA
Turbo Waste Gate Solenoid: MOPAR # 4627297AB 

Power, a.k.a. horsepower (HP):
→ → Classica & Lusso: (SAE) 160 HP (119 kW) @ 5,500 rpm
→ →ABARTH: (SAE) 164 HP (122 kW) @ 5,500 rpm
Notes: ABARTH’s extra 4 HP is a result of less exhaust resistance because of both the larger diameter exhaust crossover pipe, and the lack of a resonator in the mid-pipe; European engines are not tuned differently – the reason that Europe HP are stated differently is simply because instead of using SAE HP units, they use metric HP.

Torque:
Classica, Lusso & ABARTH (normal mode):
→ →♦ 169 lb.•ft. (230 N•m) @ 2,500 rpm
→ →♦ 184 lb.•ft. (250 N•m) @ 3,200 rpm
ABARTH (sport mode): 184 lb.•ft. (250 N•m) @ 2,500 rpm


Fuel & Emissions:
Fuel System: Sequential, multi-point, return-less, electronically controlled fuel injection
Fuel Grade Usage
:
→ →♦  87 octane acceptable
→ →♦  91 octane recommended, especially for temps > 85°F
→ →♦  Note: Hi-perf. tunes mandate using 91 octane
Fuel Tank Capacity: 11.9 U.S. gallons (45 liters)
Fuel Pump Pressure: Regulated @ 58 PSI
Fuel Injectors (4): MOPAR # 4627652AB (Alfa Romeo # 55241175) are OEM; flow rate @ OEM pressure: 38.46 lbs/hr (404 cc/min); USCAR connectors; Bosch # 0 280 158 300 (thanks Calehedron)
Air Oil Separator (AOS) Servicing Interval (also PCV Valve): 30,000 miles (48,000 km); sooner if:
→ →♦ an “oil leak” around cylinders #3 or #4 is suspected
→ →10,000 miles (16,000 km) for “severe” driving, which includes frequent short trips, driving in hot weather, stop-and-go traffic, track use, and driving through mountainous passes.
→ →124 catch canNote: nice video showing how to clean and re-use the AOS, rather than replacing with new, however the PCV valve should be replaced with new.
PCV Valve
: MOPAR # 4893073AA (or equivalent, such as Duralast PCV1010DL).  Mopar will claim this part isn’t compatible, as they hope you’ll buy a new AOS instead.
Oil Catch Can(s):  If you are considering installing catch can(s) to reduce the amount of oil found in your air filter (potentially entering the turbo air intake and/or throttle body), first try simply replacing the PCV valve. Some helpful tips can be found in this forum thread (summarized in my markup of 17221′s photo   (or if you’re considering a dual catch setup, illustration).
Emission Controls: 3-way catalytic converter, heated oxygen sensors, and no EGR valves – thanks to the precision of  Multi-Air* control of intake valves, resulting in CO² emissions of .66 lb./mile
Oxygen Sensors: Upstream (#1) MOPAR # 68235253AB; Downstream (#2) MOPAR # 68235254AB; recommended special offset 22 mm socket to prevent damage to wiring, and accessibility
Oxygen Sensor Torque: 26 ft.•lb. (35 N•m)
Emission Control Components Warranty (U.S.): Per Federal law, the ECM, OBDII and catalytic converter are covered for the first 8 years / 80,000 miles (whichever first occurs) 
EPA Fuel Economy (U.S. city/highway/combined):
→ →♦ 26/35/30 mpg with 6-speed manual transmission
→ →♦ 25/36/29 mpg with 6-speed automatic transmission
Highway Range (manual / automatic): 416.5 miles / 428.4 miles
MotorTrend “Real Fuel Economy” (U.S. city/highway/combined):
→ →♦ 30.4/43.4/35.1 mpg


Oil & Oil Filter:
Oil Grade Required
→ →♦  SAE 5W-40 Full Synthetic API Certified, FCA MS-12991 or
→ →♦  FIAT‘s European equivalent 9.55535-S2  or
→ →♦  ABARTH‘s equivalent 9.55535-GH2 or
→ →♦  MOPAR # 05127394PC 
→ →♦  or an equivalent, such as:

    • Pennzoil Platinum Euro Full Synthetic 5W-40 ($ rebate $)
    • Quaker State Euro Full Synthetic 5W-40 (Shell Helix Ultra 5W-40, more commonly available in Europe ♦ MotoMaster Full Synthetic 5W-40, produced by Shell for Canadian Tire ♦ and this Quaker State, are all likely relabeled Pennzoil Platinum Euro oil, as parent company Shell owns these brands)
    • Total Quartz 9000 Energy 5W-40
    • Motul 8100 X-Cess Gen2 5W-40
    • Ravenol VST 5W-40 
    • MPM 05000C3 5W-40 Premium Synthetic C3 
    • Havoline Pro-DS 5W-40
    • Redline Euro Series Full Synthetic 5W-40
    • Petronas K P.E. 5W-40 (certified to meet FIAT 9.55535-S2 ♦ more commonly available in Europe ♦ this is the same oil that the FIAT factory in Termoli, Italy fills each new Classica & Lusso engine with)
    • Petronas Selenia ABARTH 5W-40 (certified to meet FIAT 9.55535-GH2 ♦ more commonly available in Europe  ♦ also available labelled as Petronas Selenia Quadrifoglio 5W-40 ♦ this is the same oil that the FIAT factory in Termoli, Italy fills each new ABARTH engine with)
    • AMSOIL FS Synthetic European 5W-40 (AMSOIL has not sought FCA certification, but officially guarantees that this oil is also a suitable alternative)

Note 1:  0W-40 is an ideal cold-climate alternative to 5W-40 – having a thinner “cold” viscosity.  Although Mobil has not sought FCA certification, they officially guarantee that their Mobil 1 ESP X3 0W-40 oil meets or exceeds FIAT 9.55535-S2.  I only mention this since, the others listed above may not be easily obtainable in some countries, and since some FIAT dealers in cold-climate regions are using Mobil 1, it is doubtful that FCA would fight this choice, should an oil related issue occur during the warranty period. 

Note 2: The ECU has the oil temperature/viscosity parameters for the entire working temperature range of Pennzoil’s Platinum Euro oil, programmed in, because in addition to lubricating your engine, the oil also plays a major function within the Multi-Air brick in individually controlling all of your intake valves, so other than the grade difference mentioned in Note 1, it is imperative that you adhere to the specified oil requirements, and not just find any ‘ol 5W-30 or 5W-40 oil that is convenient!  (quite likely in some quick-lube shops).  

multiair brick

Multi-Air “brick”

*    Multi-Air: Upgrade from the T-jet; hydraulically-actuated   
variable valve timing (VVT) engine technology enabling “cylinder by cylinder, stroke by stroke” control of intake air directly via the engine’s inlet valves (great article on FIAT’s Multi-Air technology)

Oil Pressure (@normal operating temp):
→ →♦ @ curb idle: >10 psi
→ →♦ @ 4,000 RPM: >58 psi
Oil Capacity
: Although the manual states 4 qts. with oil plugdry filter (3.785 liters), an initial fill of 3½ qts. is advised, to avoid having to extract potential overfill; add as necessary after running engine for a few moments (also good opportunity to inspect for O-ring seal leaks of the oil filter cap and drain plug)
Oil Drain Plug: MOPAR # 6507741AA, M14 x 1.5 mm (re-usable O-ring , not crush washer);
→ →Note: dealer should not be replacing plug, unless they damaged the original
Oil Drain Plug Torque: 14.75 ft.•lb. (20 N•m)
Wrench size for Drain Plug: 13 mm (12 in.)
Wrench size for (9) Belly-Pan Bolts (to expose drain plug): 12 mm (1532 in.)
Belly-Pan Bolts Torque: 71 – 80 in.•lb.

Oil Filter Cartridge:
MOPAR # 68102241AA, or equivalent (includes new cap O-ring)
Oil Filter Cap (w/ Bypass Valve): MOPAR # 04892850AA (normally, no need to replace)
Oil Filter Cap Torque: 18 ft.•lb. (25 N•m) per Service Manual, but after it bottoms out, using the wrench, you risk distorting the O-ring
Wrench socket for oil filter cap: 27 mm (1 116 in.)
Oil (& Oil Filter) Change Interval (first to occur with “normal” driving):
→ →♦ ≈1 year or
→ →♦ ≈10,000 miles or
→ →♦ when the oil-life monitor indicates “Oil Change Due!
→ →Note that the oil-life monitor should react to
“severe” driving by alerting the driver much sooner than 10,000 miles (perhaps closer to 3,000 miles). This includes frequent short trips, driving in hot weather, stop-and-go traffic, track use, and driving through mountainous passes.
→ →(DIY instructions via drain plug + via dip-stick tube extraction)
Reset Oil Change Monitor (also, an illuminated Wrench light (near tach 4,000 rpm), but only if “oil change” is what triggered the light (not “tires” or “other scheduled maintenance”):
→ →
♦  Ignition ON (not ACC; more)
→ →
♦  Press accel pedal to the floor 3X (within 10 seconds)
→ →
♦  Ignition OFF
➤ (Regardless of wrench light status, reset Oil Change Monitor after each oil change!)

Other oil related items, not associated with standard oil changes:
→ →♦  Multiair-Brick Oil Filter Banjo Bolt
: MOPAR # 68189847AA  (more details)
→ →♦  Turbo Oil Filter Banjo Bolt
:  (more details)


Engine Cooling & Coolant:

Although MOPAR # 68163848AB Antifreeze / Coolant was specified in the owner’s manual, FIAT is now (2018) recommending MOPAR # 68334695AA  Antifreeze / Coolantor equivalent FL22 coolant, as specified on the coolant reservoir cap, and matching the coolant MAZDA installs (including the green color); Article with more details
Note: If flushing the coolant out, I recommend switching over to the aforementioned purple, “Extended Life” MOPAR coolant {or equivalent} + reflect that changeover on the coolant reservoir bottle cap label.

Coolant Capacity:
→ →♦  7.6 qts. (7.2 liters) with six-speed manual
→ →♦  7.5 qts. (7.1 liters) with six-speed automatic
Coolant Change Interval:  5 years or 75,000 miles (120,000 km), whichever comes first.  Note: Since the FL22 spec coolant is “5-Year POAT (Phosphate Organic Additive Technology)”, and therefore isn’t an “Extended Life” coolant, I disagree with the Owner’s Manual which states 10 years or 150,000 miles (240,000 km)
Cold-Engine (blue) light
: simply indicates coolant temperature hasn’t yet reached 130° F (54.5° C); not to be considered a warning
Hot-Engine (red) light: warning that coolant temperature is at least 223° F (106° C )
Normal Operating Temperature Range
: 170°F – 195°F
Thermostat: MOPAR # 68320858AA; the 124 Spider is the only FCA vehicle that uses this particular electrically assisted (also called “map-controlled”) thermostat that provides broader and faster operation than traditional thermostats.  Rather than depending on coolant temperature alone, electric coils heating the wax inside the thermostat are controlled by the ECU to schedule optimal opening, depending on the speed and load conditions of the engine.
Thermostat initial opening temperatures:
→ →♦  Globally (except U.S. and Canada) ~ 188° F – 193° F (86.5° C – 89.5° C)
→ →♦  U.S. and Canada ~ 177° F – 182° F (80.5° C – 83.5° C)

water pump - david maldonado

photo courtesy of David Maldonado

Water Pump: MOPAR # 68385387AA (common on all Fiat/Alfa Romeo 1.4 L engines)
Coolant Leakage Notes
per Greg @ Eurocompulsion

A significant presumed failure rate of water pumps (leaking coolant, especially among MY 2018 vehicles) seems to be prevalent, but in actuality, in some instances it may simply be an inadequate/improper application of sealant at the engine block interface (in lieu of a gasket).  If this is the confirmed source of leakage, I recommend using a more forgiving sealant like J-B Weld 31314, instead of the specified MOPAR sealant.  Greg notes however, that upon close inspection – leakage usually is not actually at the water pump, but rather at one of the cooling system joints on the turbo, or under the turbo at the oil cooler structure. Some of those connections are impossible to see because of the felt like heat shielding around the structure.
 
per Ameridan:
 
Note that the overflow reservoir has it’s own overflow hose, which releases excess overflow onto your engine belly pan. You will normally not see this overflow coolant on the ground, unless the pan is unable to contain the released coolant.   I never gave much thought to this overflow hose, but since it also serves as a vent for transfer activity between the pressurized system chamber and the overflow reservoir, unlike in vehicles without bottom pans, perhaps we shouldn’t panic and assume the water pump is failing if we occasionally get a whiff of antifreeze, as this vented air is perhaps more likely to be drawn into our cabin air inflow. Similarly, don’t assume the worst just because you see a green stain on your belly pan – it could just be vented overflow coolant.  Prior to a large repair job, shine a black light at a suspect water pump, as it will confirm an actual leak.


124 SPIDER ~ AUTOMATIC TRANSMISSION
Availability Optional: Classica, Lusso, ABARTH
Make / Model #: Aisin-Warner F21-250 HD (FIAT # AW6R31)
Description: Six-speed; Planetary gear train, longitudinal layout; magoffin’s observation: “3ʳᵈ gear in the automatic is perfectly matched to powerband of the turbo 3000-5000 rpm for twisty road ridge-running @ 35-55 mph.”
Prior usage: Same internals as MAZDA‘s SJ6A-EL (used in NC MX-5 and current ND MX-5) and Toyota‘s A960E versions of the Aisin B400 (used in the Subaru BRZ, Scion FR-S and Toyota GT86), although the housings differ slightly to accommodate mounting to respective engines.  NC Service Manual for reference.
Rating: 229 lb.•ft.
Lockup Torque Converter: 2ⁿᵈ, 3ʳᵈ, 4ᵗʰ, 5ᵗʰ and 6ᵗʰ gears
Fluid Requirement
: MOPAR # 68333587AA, or equivalent = JWS 3309
→ →(discussion of JWS 3324 alternative, as FYI)
Fluid Capacity
: 7.8 qts. (7.5 liters); dipstick info
Wrench size for fill plug: low-profile T55 Torx bit 
Wrench size for drain plug: 14 mm

Drain plug crush washer18mm ID/25mm OD
Gear Ratios (overall):
→ →1ˢᵗ  3.538:1 (12.68:1)
→ →2ⁿᵈ 2.06:1 (7.38:1)
→ →3ʳᵈ 1.404:1 (5.03:1)
→ →4ᵗʰ 1.00:1 (3.58:1)
→ →5ᵗʰ 0.713:1 (2.55:1)
→ →6ᵗʰ 0.582:1 (2.09:1)
→ →Reverse: 3.168:1
Max. Speeds in gears:  (manual shift mode, 17″ wheels, theoretical values for 5ᵗʰ and 6ᵗʰ gears)
→ →1ˢᵗ   35 mph
→ →2ⁿᵈ 61 mph
→ →3ʳᵈ 89 mph
→ →4ᵗʰ 126 mph
→ →5ᵗʰ 177 mph
→ →6ᵗʰ 216 mph
Sport Mode Availability Standard: ABARTH  only; adding option to Classica, Lusso not feasible
Paddle Shifters
Availability Standard: ABARTH  only; details for adding option to Classica, Lusso


124 SPIDER ~ MANUAL TRANSMISSION
Availability Standard: Classica, Lusso, ABARTH
Make / Model #: MAZDA C635 (some sources state MAZDA P66M-D?)
Description: Six-speed; 1ˢᵗ, 2ⁿᵈ, 3ʳᵈ, 4ᵗʰ gears: Triple cone
Prior usage: MAZDA developed a different MT for the ND MX-5 (Model M66M-D, 15 lbs. lighter, and much lower torque capability primarily due to housing flex attributed to removal of ribs) that FIAT chose to avoid, and instead use the same internals as version used in NC3 MX-5, although the housings differ slightly to accommodate shifters and mounting to respective engines.  NC Service Manual for reference; per Good-Win Racing, clutch is not NC spec though.
Adjustment procedure: described in detail, should it pop out of 4ᵗʰ gear.
Rating: 258 lb.•ft.
Fluid Requirement
: MOPAR # 68333586AA, or equivalent = 75W-90 GL-4 Gear Lube (not GL-5, nor GL-4/GL-5 combinations);  Lubrimatic 55-001 pump recommended.  Also DIY instructions
Fluid Recommendation (smoother shifting in colder climates): [Andrei’s (Xtreme Revolution) Dec. 2022 update] 1 quart of Amsoil Synchromesh along with remaining fill (≅1.2 quarts) of Amsoil MTG 75W90, is highly recommended.
Fluid Capacity: 2.2 quarts (2.1 liters)
Wrench size for filler & drain plugs: 24 mm

top speed

photo courtesy of Thijs Helmers, on the Autobahn

Drain plug crush washer18mm ID/25mm OD
Gear Ratios (overall):
→ →1ˢᵗ  4.363:1 (15.07:1)
→ →2ⁿᵈ 2.348:1 (8.11:1)
→ →3ʳᵈ 1.647:1 (5.69:1)
→ →4ᵗʰ 1.262:1 (4.36:1)
→ →5ᵗʰ 1.000:1 (3.45:1)
→ →6ᵗʰ 0.844:1 (2.92:1)
→ →Reverse: 3.863:1
Max. Speeds in gears (17″ wheels):
→ →1ˢᵗ   30 mph
→ →2ⁿᵈ 56 mph
→ →3ʳᵈ 79 mph
→ →4ᵗʰ 104 mph
→ →5ᵗʰ 131 mph
→ →6ᵗʰ 155 mph (249 kmh; theoretical value  without some goodies 🙂 )
Shifter Knob thread: M10 x 1.25 mm (same as all MX-5)
Shifter Bushing Replacement: 24 mm (same as NC2 or NC3; not NC1)
Clutch Fluid: MOPAR # 04318080AD, or equivalent = SAE J1703 DOT 3 (the clutch shares the fluid reservoir with the brakes) 


124 SPIDER ~ OPEN DIFFERENTIAL
Availability Standard: Classica, Lusso (both MT & AT)
Make: GKN Driveline (Tochigi Fuji)
Description
: Torque-sensitive cone type, helical gears, open center – meaning that effectively the torque is evenly split among the two wheels, but that can result in the drive of the engine being sent to the wheel of least resistance
Wrench socket for filler plug: 23 mm
Wrench socket for drain plug: 24 mm
Filler and drain plug crush washers: Mopar # 68314601AA (thanks DBoe)
Fluid Requirement
: MOPAR # 68333589AA, or a  75W-90 SG1 (GL-5) Hypoid Gear Oil equivalent; (DIY instructions)
Fluid Capacity: 0.63 qt. (0.6 liter)
Axle Ratio: 3.454:1  with manual / 3.583:1  with automatic
Notes: Cross-compatible with ND MX-5 + Honda S2000 (different internals result in a 2.866:1 axle gear ratio with manual / 3.45:1 axle gear ratio with automatic); 15 lbs. lighter than the NC MX-5 differential.

124 SPIDER ~ LIMITED-SLIP DIFFERENTIAL (LSD)
Availability Standard
:  ABARTH (both MT & AT)
Make / Model: GKN Driveline (Tochigi Fuji) / Super LSD
Description: Torque-sensitive, cone clutches made of hardened metal which can transmit higher torque levels for a given diameter than traditional flat plate clutches
Torque Bias Ratio (TBR): 1.8:1
Wrench socket for filler plug: 23 mm
Wrench socket for drain plug
: 24 mm

Filler and drain plug crush washers
: Mopar # 68314601AA (thanks DBoe)
Fluid Requirement
:
→ →•  4 oz. of MOPAR # 68334697AA, or a  FCA MS-10111 Limited Slip Additive equivalent (a friction modifier)
→ →•  and  remaining capacity with MOPAR # 68333589AA, or a 75W-90 SG1 (GL-5) Hypoid Gear Oil equivalent
(Note that some equivalent ‘limited slip’ gear lubes, may already contain the required friction modifier, but I don’t believe the spec’d lube is on-it’s-own, a limited slip gear lube.  The Fiat Service Manual states that the additive is required for LSD, but I think the note “Additive is contained within the specified gear oil for the rear differential” is a misinterpretation of the fact that the additive is to be added to the MOPAR # 68333589AA gear oil, not that it is already mixed in.)

diff oil calloutTotal Fluid Capacity: 0.63 qt. (0.6 liter)
Axle Ratio: 3.454:1  with manual / 3.583:1  with automatic
Notes: Cross-compatible with ND MX-5 GT (different internals result in a 2.866:1 axle gear ratio with manual / 3.45:1 axle gear ratio with automatic); Conical friction elements enveloping the side spider gears, with centrally-positioned springs to preload the friction surfaces.


124 SPIDER ~ ELECTRICAL SYSTEM
Alternator: Denso SC2 150 A with LIN regulator
OEM Battery: MAZDA‘s “Start-Stop” EFB battery (Panasonic enhanced flooded cell lead-acid); MAZDA part # PE1T-18-520-9U;  Q85, 520 CCA, 65 Ah [20 hr rate], 52 Ah [5 hr rate], 37.3 lbs (16.9 kg), more details
Replacement Battery: As an alternative to the spec battery, FIAT has recommended that U.S. dealers install their stocked H5 battery (currently MOPAR # BB0H5500AB), which fits OK, although slightly smaller in height and capacity (500 CCA).  See my battery article for other BETTER alternatives, which include good-value and readily available Group 35 (and Group 51R) batteries, unlike the Q85.
Battery Cover: Anclar has confirmed that the corrugated/insulated surround “battery cover” (Mopar # 68313904AA) accommodates proper replacement batteries.  Do not discard, as it should be reused, in order to protect the battery from turbo/engine radiant heat.


Important: The ⊝ negative* or ⊕ positive terminal should always be disconnected from the battery, prior to working on any electrical/electronic components:
→ →
♦  Tap the brake pedal for a few seconds afterwards, to completely discharge residual power
→ →
♦  Afterwards, upon re-connection, all modules learn current configurations, but you should re-initialize the windows and TPMS
→ →
♦  Additionally, upon re-connection (and after a timing belt change), the UK/Euro owner’s manual indirectly mentions that the TDC sensor calibration for the ECM should be re-initialized via a “phonic wheel learning procedure” Let the engine run until the Cold-Engine (blue) light turns off – rev the engine min. 3 times up to 6000 rpm and let the RPM drop to idle in between – wait one minute, turn engine off, wait one minute, turn it on, wait one minute – this should store the phonic wheel values, and prevent getting intermittent misfire errors (including P0300/P0302/P0303), triggering the “Check Engine” light.  (I doubt that this normally needs to be done just because the battery has been disconnected)


*  The sensor module (MOPAR # 68340388AA) attached to the ⊝ negative terminal is somewhat fragile.  Installing terminal with the customary hammer tapping may cause damage, resulting in alternator not charging and warning message  >> I suggest you tap the terminal down using a deep socket directly in-line with the lead post.

Wiring colors (source):

B Black, L Blue, BR Brown, DL Dark Blue, DG Dark Green, GY Grey, G Green, LB Light Blue, LG Light Green, O Orange, P Pink, R Red, SB Sky Blue, T Tan, V Violet, W White, Y Yellow


124 SPIDER ~ FUSES
Most of the fuses are low-profile mini-fuses; (article on adding fuse taps)
Engine Compartment Fuses:

Fuse Name Amperage Description
F01 ENG IG3 5 Engine control systems
F02 ENG IG2 5 Engine control systems
F03 HORN2 7.5 Horn
F04 C/U IG1 15 For protection of various circuits
F05 ENG IG1 7.5 Engine control system
F06
F07 INTERIOR 15 Interior lighting
F08
F09 AUDIO2 15 Audio system
F10 METER1 10 Instrument cluster
F11 SRIS1 7.5 Air bag
F12
F13 RADIO 7.5 Audio system + Backup camera
F14 ENGNE3 20 Engine control system
F15 ENGNE1 10 Engine control system
F16 ENGNE2 15 Engine control system
F17 AUDIO1 25 Audio system
F18 A/C MAG 7.5 Air conditioner
F19 AT PUMP H/L HI 20 Transmission control system (IF Equipped)
F20 AT 15 Transmission control system (IF Equipped)
F21 D LOCK 25 Power door locks
F22 H/L RH 20 Headlight (RH)
F23 ENG+B2 7.5 Engine Control System
F24 TAIL 20 Taillights/Number plate lights/Position lights
F25
F26 ROOM 25 Overhead light
F27 FOG 15 Fog lights
F28 H/CLEAN 20 Headlight washer (where provided)
F29 STOP 10 Stop lights/Rear fog light (where provided)
F30 HORN 15 Horn
F31 H/L LH 15 Headlight (LH)
F32 ABS/DSC S 30 ABS/DSC system
F33 HAZARD 15 Hazard warning flashers/Direction indicators lights
F34 FUEL PUMP 15 Fuel System
F35 ENG+B3 5 Engine Control System
F36 WIPER 20 Windshield wipers
F37 CABIN + B 50 For protection of various circuits
F38
F39
F40 ABS/DSC M 50 ABS/DSC system
F41 EVVT A/R PUMP 20 Engine control system
F42
F43
F44 FAN2 40 Cooling fan
F45 ENG. MAN 40 Engine control system
F46 EPS 60 Power steering system
F47 DEFOG 30 Rear window defogger
F48 IG2 30 For protection of various circuits
F49
F50 HVAC 40 Heater + Air conditioner
F51
F52

Passenger Compartment Fuses:

Fuse Name Amperage Description
F01 RHT R 30
F02 RHT L 30
F03
F04
F05 F.OUTLET 15 Accessory sockets
F06
F07 AT IND 7.5 AT shift indicator (where provided)
F08 MIRROR 7.5 Power control mirror
F09 R_DECK R 30
F10 R_DECK L 30
F11 F.WASHER 15 Windscreen washer
F12 P.WINDOW 30 Power windows
F13
F14 SRS2/ESCL 30
F15
F16

Battery Fuses: 200 amp; the red module hanging from the positive battery terminal, protects the battery against reverse polarity; MAZDA # N243-67-S99


124 SPIDER ~ ON-BOARD DIAGNOSTIC SYSTEM (OBDII)
obd2 from underneath MX5Port: 16-pin, white SAE J1962 diagnostic connector located behind the lower edge of the dashboard on all MY 1996+ vehicles, usually hiding above the brake pedal. 
Purposes:
→ →•  Read/clear diagnostic trouble codes (DTC): List of Codes & Descriptions
→ →•  Update firmware for various modules
→ →•  Re-initialize modules (headlight aiming module, etc.)
→ →•  Feed vehicle data to various devices (aftermarket gauges, dashcams, GPS trackers, etc.)
→ →•  Battery keep-alive/charging
→ →•  Add CAN module to change behavior of some features (ie turn signal volume)
Recommended Scanner Type (< $100; app-dependent interface): ELM327, more details
Recommended apps (needed to interface with scanner): TORQUE PRO (Android app; try Lite first), MULTIECUSCAN (Windows program; try Free first)


124 SPIDER ~ CMU APPS & SETTINGS
Maintenance Monitor App
: Scheduled Maintenance / Tire Rotation / Oil Change ~ details
Warning Guidance App: Display of  Warning messages, however an OBDII device will provide much more informative results ~ details
Screen Thermal Protection:  If screen temperature exceeds 176°F (80°C), a warning message “Display is too Hot. Screen performance may be decreased until it cools” is displayed
Fuel Economy App: Graphical display of fuel economy history ~ details
Navigation App: enabled with FIAT SatNav card
MOPAR # 68366118AA ~ details
Music Album/Song Data App: Gracenote® database ~ details
XM Satellite Radio App: for North American market only; no album art displayed, nor is it compatible with Gracenote; may not play full spectrum of Sirius XM channels
HD Radio Traffic App: TMC can provide real-time status of traffic for many major metropolitan areas in some firmware versions/regions/countries; apparently disabled in our vehicles
FIAT Connect System FAQs: MAZDA Document for Service Technicians
Personalization Settings Menus:

Aside from Language, Distance & Temperature Units, Fuel Economy App options and Audio settings, menus have been developed allowing the CMU to communicate with various electronic modules via the HS-CAN network, to alter settings for: Door Locks  ▌ Keyless Entry   ▌ Blind-spot Monitor   ▌ Auto-Wipers   ▌ Headlights & Adaptive Headlights (AFS)   ▌Daytime Running Lights  ▌ Turn Signal Lights ~ details


124 SPIDER ~ CLUSTER WARNINGS/INDICATORS

cluster layout

No. Name (Fiat/Abarth layout may be slightly different)
1 Turn signal/hazard warning indicator lights
2 Engine coolant temperature indicator light; not-yet warm (blue)/high warning light (red)
3 Wrench indicator light
4 Low washer fluid level warning light
5 Engine oil warning light
6 Seat belt warning light
7 ABS warning light
8 Master warning light
9 Charging system warning light
10 Air bag/seat belt pretensioner system warning light
11 Security indicator light
12 Tire pressure monitoring system warning light
13 Brake system warning light
14 Headlight high-beam indicator light
15 DSC OFF indicator light
16 LED headlight warning light
17 LDWS OFF indicator light
18 Cruise main indicator light (amber)/cruise set indicator light (green)
19 Electric vacuum pump warning light
20 Blind spot monitoring (BSM) OFF indicator light
21 HBC indicator light (green)/HBC warning light (amber)
22 LDWS warning light
23 Check fuel cap warning light
24 Lights-on indicator light
25 Power steering malfunction indicator light
26 TCS/DSC indicator light
27 Check engine light
28 Automatic transmission warning light
29 KEY fob warning light (red)/KEY indicator light (green); low fob battery (flashing green)
30 Door/Trunk-ajar warning light
31 Low fuel warning light

Here are some additional lights from the ABARTH  manual…

cluster-lights

124 SPIDER ~ SUSPENSION
Front = Independent, double-wishbone with coil springs and stabilizer bar:
→ →♦  Double-wishbone with aluminum control arms
→ →→ →(same as all ND MX-5)
→ →♦  Tokico monotube shocks (Classica, Lusso)
→ →♦  Bilstein (B6 performance series) monotube shocks 
→ →→ (ABARTH + ABARTH GT only; same as MT ND MX-5 Club + GT)
→ →♦  Coil spring rate:
→ →→ →160 lbs. (Classica, Lusso)
→ →→ →162 lbs. (ABARTH + ABARTH GT only)
→ →→ →(vs. 156 lbs on ND MX-5 non-Club + GT)
→ →♦  Front stabilizer bar size (hollow): 23.6 mm
→ →→ →(vs. 22.86 mm on all ND MX-5)
→ →♦  Strut tower brace (ABARTH + ABARTH GT only)

Rear = Independent, multi-link with coil springs and stabilizer bar:
→ →♦  Multi-link (5-arm) with aluminum bearing support
→ →→ →(same as all ND MX-5)
→ →♦  Tokico monotube shocks (Classica, Lusso)
→ →♦  Bilstein (B6 performance series) monotube shocks 
→ →→ (ABARTH + ABARTH GT only; same as MT ND MX-5 Club + GT)
→ →♦  Coil spring rate:
→ →→ →85 lbs. (Classica, Lusso)
→ →→ →97 lbs. (ABARTH + ABARTH GT only)
→ →→ →(vs. 80 lbs on ND MX-5 non-Club + GT)
→ →♦  Rear stabilizer bar sizes (hollow):
→ →→ →Classica & Lusso: 14.0 mm
→ →→ →ABARTH + ABARTH GT: 13.0 mm (smaller OD, yet stiffer)
→ →→ →(vs. solid 11 mm on ND MX-5)

Notes:
→ →♦ per Brian Goodwin, “Fiat specified their own parameters for springs and sways such that although the parts are “interchangeable” with ND MX-5, unless you wish to intentionally alter the standard handling characteristics, it isn’t advisable doing so”. 
→ →♦ Regarding suspension tuning: some performance alternatives
→ →♦ If you are experiencing a clunk from the rear suspension, read this Mazda TSB regarding the bush of the upper lateral link in the rear hub support.
→ →♦ Stabilizer bar bushings need to properly match the outside diameter of the installed bars; Bushings are normally pre-assembled securely onto OEM stabilizer bars.
→ →Alignment Specs:  some recommended settings


124 SPIDER ~ STEERINGsteering
Description: Double Rack-and-pinion, 
engine-speed-sensing variable electric power assist
Overall Ratio: 15.5:1
Turning Diameter (curb-to-curb): 30.8 ft. (9.4 m)
Steering Wheel Tilt Range: 3.3 in. (84 mm)
Steering Wheel Telescopic Stroke:
(option was only offered for ND MX-5) 1.18 in. (30 mm)
(article to add feature to 124 Spider)
Steering Wheel Turns (lock-to-lock): 2.7
Steering Wheel Diameter: 14 ½ in.


124 SPIDER ~ WINDSHIELD WIPERS
Description: Manufactured by Mitsuba; aerodynamic design so that wind pushes them down against the windshield at highway speeds; the wide rubber blade inserts are impregnated with graphite; the beam frames are made of plastic; although you can obtain replacement parts from FIAT , MAZDA part #s are shown, since re-branded FIAT parts are ≈ $100 for the pair.
♦ Left side
: 18″ (450 mm) blade insert only – N247-67-333;
“Aero” wiper blade assembly – NA8W-67-330
♦ Right side: 19″ (475 mm) blade insert only – N256-67-333;
“Aero” wiper blade assembly – NA9C-67-330

Interactive wiring diagram (right-click it; select Full screen; select Flow; then you’ll be able to see all of the circuit paths that activate the wiper motor)


124 SPIDER ~ AIR CONDITIONING

Note:  If you’d like to avoid musty smells emanating from the HVAC system, always allow the system to ventilate by turning Max & Recirculate OFF before parking the car overnight or longer.

Refrigerant Type: HFC134a (R-134a, aka as Freon™ 134a, a hydrofluorocarbon (HFC) refrigerant) is specified in my MY 2017, but at some point switched over to HFO-1234yf (aka Opteon™ YF, a hydrofluoro-olefin (HFO) refrigerant) instead, and that is what MOPAR now “officially” recommends, as it is claimed to be a compatible alternative (that meets EU standards), with “improved performance” and more environmentally friendly (although it is mildly flammable and does require special handling).  Refer to the label on the underside of your hood (also specifies the PAG compressor lubricant that needs to be added), and if you aren’t in Europe, and your AC shop still uses R-134a, you need not change over.

HVAC “Cabin” Filter: MOPAR # 68313632AA or MAZDA N243-61-B05; it’s primary purpose is to protect foreign material from interfering with the fan, rather than filtering cabin air.  The process for accessing this filter is quite involved, so contrary to the Owner’s Manual, which states mandatory replacement every 18,000 miles (every 3rd oil change; resulting in MOPAR’s excessively high fee for this service), FIAT has now agreed that this filter should not normally need to be changed, unless air flow seems restricted. Filter access procedure here.  Note: If debris (or critters) seems to be an issue, consider adding a screen to the air inlet.

aheiimgEvaporator Drain:  If anyone happens to find water residing in their floor carpeting, I would first suspect the drain filters for the convertible top well are in need of cleaning, but a second possibility is a clogged/pinched drain hose for the HVAC evaporator. I couldn’t find out anything about this in either the Miata of 124 Spider Service Manuals, but  justanothermx5  shared the results of his investigation, and has located the elusive HVAC drain connection (yes, it’s under the subwoofer/wedge, as shown in his photo above), where the hose going through the firewall is attached, allowing condensate to drip on the ground.  If that hose somehow gets clogged, condensate can back up into the passenger footwell instead, so I’m displaying his pic, to hopefully help you locate the exterior end of the hose, as it would be advantageous to unclog it there (once you locate it), vs. breaking the seal by removing the drain component from the inside.

ac crackCracked “cooler pipe” (HI):  According to this revised Mazda TSB, if your A/C does not blow cold air, engine vibration may have cracked the weak spot in the under-designed cooler pipe. To correct this issue, the material and thickness of the cooler pipe replacement (now in it’s third generation, as noted by the B suffix in the part #) has been changed to increase durability (pipe diameter has been changed from 12mm to 16mm). 
Note the additional comment: This repair with P/N NA6W-61-466B will only be covered once under warranty for MX-5’s that have suspension modifications and/or engine modifications such as PCM calibration, supercharger/turbocharger setup, engine mounts, headers etc.

Interactive wiring diagram (right-click it; select Full screen; select Flow; then you’ll be able to see all of the circuit paths that activate the HVAC fan motor and actuators)


124 SPIDER ~ BRAKES & SAFETY
Four-wheel anti-lock brake system (ABS) Standard with Electronic Brake Force Distribution (EBFD): Classica, Lusso, ABARTH
→ →(All components for ND MX-5 standard brakes are compatible)
→ →Front Brakes:

→ →→ →11 in. (280 mm) ventilated discs with floating single-piston calipers
→ →→ →Pad thickness: 9 mm (new); 1.5 mm (min.)
→ →→ →Swept Area (per caliper): 10.5 sq. in. (67.8 sq. cm)
→ →Rear Brakes:
→ →→ →11 in. (280 mm) solid disks with floating single-piston calipers
→ →→ →Pad thickness: 8 mm (new); 1.5 mm (min.)
→ →→ →Swept Area (per caliper): 9.8 sq. in. (63.0 sq. cm)

Availability Optional substitution: ABARTH
→ →(All components for ND MX-5 Club’s premium brakes are compatible)
→ →Front Brakes:
→ →→ →Brembo 11 in. (280 mm) ventilated disks with opposed, aluminum, fixed red  4-piston calipers
→ →→ →Pad thickness: 14 mm (new); acoustic wear indicator
→ →→ →Swept Area (per caliper): 18.6 sq. in. (120 sq. cm)
→ →Rear Brakes:
→ →→ →11 in. (280 mm) solid disks with floating single-piston calipers (standard configuration, but calipers are painted red to match front)
→ →→ →Pad thickness: 8 mm (new); 1.5 mm (min.)
→ →→ →Swept Area (per caliper): 9.8 sq. in. (63.0 sq. cm)

Brake Vacuum Booster Pump: Mopar # 68319800AA (engine powered; unique to the 124 Spider), provides additional pressure inside the dual diagonal hydraulic brake lines.
Brake Disk (Rotor) Removal Aid: If an OEM rotor is stuck due to rust, insert a bolt into the dedicated M8 threaded hole
Brake Fluid: MOPAR # 04318080AD, or equivalent = SAE J1703 DOT 3, which is standard for Classica, Lusso, ABARTH (in North America) and Classica, Lusso elsewhere; DOT 4 is standard for ABARTH elsewhere.  Notes:
→ →♦  DOT 4 brake fluid has higher dry and wet boiling points, making it safer for higher temperatures
→ →♦  Although DOT 3 and DOT 4 are compatible with each other, do not mix in DOT 5!
Brake Fluid Capacity: 0.57 qt. (0.55 liter)
Parking Brake Type: Mechanical (lever type) with a cable to rear calipers
Dynamic Stability Control (DSC): Standard
Traction Control System (TCS)
: StandardMazda-mx-5-gets-five-star-ancap-rating3
→ →(click here for my article on DSC/TCS)
Hill Launch Assist (HLA): Standard
→ →
(click here for my article on HLA)
Occupant / Pedestrian Protection System:
→ →♦  All controlled by the Supplemental Restraint System (SRS) airbag control module and various impact sensors
→ →♦  Seat belt pretensioners are always in ready mode
→ →♦  Steering wheel hub and driver’s outboard seat-back bolster airbags are always in ready mode. 
→ →♦  If the passenger seat is occupied by an adult, that seat’s outboard seat-back bolster and the passenger-side dashboard airbags will also be in ready mode.
→ →♦  in Europe and Australia, the SRS airbag module also accommodates the Deployable Hood System, a pedestrian protection system
aka “Impact Absorption Bonnets”, which are also always in ready mode.  See side story in my article for more.
miata-nd-behind-seats-exposedConvertible Rollover Protection: Primarily attributed to the use of high-strength steel in the A-pillar structure surrounding the windshield.  The high seat backs paired with the fixed aluminum roll-bar hoops (shown exposed in photo of a ND MX-5), offer a little more protection.  Brian Goodwin adds, “Stock hoops are designed to hold up for low-speed flips, like an intersection accident where you get pushed into the curb and roll over it. They are not designed for high-speed rolls, like going over an embankment or off a canyon road at speed. That’s why most track groups want to see a real roll bar [installed when participating in] higher-speed events.”


124 SPIDER ~ WHEEL RIMS AND TIRES

tire dimensions

Common specs for all OEM wheels (including ND MX-5; not 124 RALLY):
Quantity: 4 (no spare wheel)
Wheel Rim Bolt Pattern
: 4 x 100 PCD wheel offset
Wheel Rim Offset (ET): +45 mm (positive offset, aka wheel inset)  
Center Bore
: 54.1 mm (wheels are lug-centric, so if wheels with a larger center bore are used, proper lug nut installation procedure is critical)
Axle Nut clarification:  If removed to install spacers, a new nut should be used, and torque spec should read 92 ft.•lb., -180°, 188 ft.•lb. (125 N•m, -180°, 255 N•m)
Wrench socket for OEM lug nuts:  21 mm (1316 in.)
→ →Note: if you install locking lug nuts, MOPAR brand key may require a 19 mm socket, unlike MAZDA brand, which will work with existing 21 mm socket.  However, magoffin has recently discovered that MOPAR has introduced a kit exclusively for the FIAT 124 Spider, that includes the proper 21 mm socket  –  MOPAR # 82215695.

Min. Lug Nut engagement (8+ turns OEM norm): 6½ turns
→ → Note: if
spacers > 5 mm are installed, use longer lug bolts (M12 x 1.5 mm, 13.1 mm spline, 63 mm long), or better yet, obtain spacers with pressed studs, like these
Lug Nut Torque
94 ft.•lb. (128 N•m)
→ →Note: It is important to re-torque
50 – 100 miles after install
Lug Nut Threads
: M12 x 1.5 mm
Lug Nut Rim Seat
: Cone @ 60° anglewheel caps
OEM Rim Center Caps
:
(same as FIAT 500; fits on all FIAT & ABARTH OEM rims shown below)

→ →  50 mm external diameter
→ →
  44 mm internal diameter
→ →  FIAT center cap MOPAR Part #: 68098829AA
→ →  ABARTH center cap MOPAR Part #: 4726183AB

Although they may appear to be similar, FIAT 500 wheel rims do not belong on the FIAT 124 Spider!


wheels

 ➤ OEM: FIAT 124 Classica
Tire Mfr. and ModelYokohama Advan Sport V105
Tire Size, Type and Rating:  195/50R16, three-season, “V” (149 mph)
Tire Weight:  18 lbs.
Tire Dimensions:  23.7 in. diameter, 7.7 in. width, 3.8 in. sidewall, 7.2 in. tread width
Treadwear
: 280
Tire/Rim Country of Origin
: Japan/China
Wheel Revs per Mile*: 875
Wheel Rims: Custom exclusively for FIAT 124 Classica, 16″ x 6½”, cast aluminum alloy, silver, 14 spokes, 16.8 lbs., MOPAR Part # 68313985AA

 ➤ OEM: FIAT 124 Lusso
Tire Mfr. and Model: Bridgestone Potenza S001
Tire Size, Type and Rating:  205/45R17, three-season, “W” (168 mph)
Tire Weight:  19 lbs.
Tire Dimensions
:   24.3 in. diameter, 8.1 in. width, 3.6 in. sidewall, 6.5 in. tread width
Treadwear: 280
Tire/Rim Country of Origin: Japan/China
Wheel Revs per Mile*: 859
Wheel Rims: Custom exclusively for FIAT 124 Lusso, 17″ x 7″, cast aluminum alloy, silver, 12 spokes, 20.4 lbs., MOPAR Part # 68417402AA

 ➤ OEM: ABARTH 124 SPIDER

abarth wheels chris campbell

photo courtesy of Chris Campbell; this is how glossy the wheel finish should be.

Tire Mfr. and Model: Bridgestone Potenza RE050A
Tire Size, Type and Rating:  205/45R17, three-season, “W” (168 mph)
Tire Weight:  20 lbs.
Tire Dimensions
:   24.3 in. diameter, 8.2 in. width, 3.6 in. sidewall, 7.4 in. tread width
abarth wheelTreadwear
: 140
Tire/Rim Country of Origin: Japan/China
Wheel Revs per Mile*:  857
Wheel Rims: Custom exclusively for ABARTH 124, 17″ x 7″, cast aluminum alloy, gun metal (glossy; Note: if dealer forgot to remove protective shipment wrap film, the finish will look dull and will eventually appear to be “peeling” ), 10 spokes, MOPAR Part # 68368813AA, designed to clear the Brembo brakes (front), 21.78 lbs. w/o TPMS sensor

abarth wheel6 ➤ OEM: ABARTH 124 GT
Tire Mfr. and Model
: Bridgestone Potenza RE050A
Tire Weight:  20 lbs.
Treadwear: 140
Wheel Revs per Mile*
:  857
Tire/Rim Country of Origin
: Japan/Italy
Tire Size, Type and Rating:  205/45R17, three-season, “W” (168 mph)
Tire Dimensions
:   24.3 in. diameter, 8.2 in. width, 3.6 in. sidewall, 7.4 in. tread width
Wheel Rims: Custom exclusively for ABARTH 124 GT by OZ Racing, Ultraleggera 17″ x 7″, forged aluminum alloy, color: “matte black”, 12 spokes, no cap adapters needed, MOPAR Part # 52109667, designed to clear the Brembo brakes (front), 15.18 lbs. w/o TPMS sensor (3 kg lighter than stock, although I suspect OZ was actually able to achieve a 4 kg reduction, like the Rally Tribute wheels ), more details

oz wheels6 ➤ OEM: ABARTH 124 RALLY TRIBUTE
Tire Mfr. and Model
: Bridgestone Potenza RE050A
Tire Weight:  20 lbs.
Treadwear: 140
Wheel Revs per Mile*
:  857
Tire/Rim Country of Origin
: Japan/Italy
Tire Size, Type and Rating:  205/45R17, three-season, “W” (168 mph)
Tire Dimensions
:   24.3 in. diameter, 8.2 in. width, 3.6 in. sidewall, 7.4 in. tread width
Wheel Rims: Custom exclusively for ABARTH 124 RALLY TRIBUTE by OZ Racing, Ultraleggera 17″ x 7″, forged aluminum alloy, color: “race white”, 12 spokes, no cap adapters needed, 12.98 lbs. w/o TPMS sensor (4 kg lighter than stock), MOPAR Part # 52148300, Ricambi part # 0052148300
Notes specific to these wheels:
→ →♦ Apparently they don’t have DOT certification needed to be sold legally in U.S.
→ →♦ Designed to clear the Brembo brakes (front) 

 ➤ OEM: FIAT 124 Classica “Urbana”urbanna
Tire Mfr. and Model
: Bridgestone Potenza S001
Tire Size, Type and Rating
:  205/45R17, three-season, “W” (168 mph)
Tire Weight
:  19 lbs.
Tire Dimensions
:   24.3 in. diameter, 8.1 in. width, 3.6 in. sidewall, 6.5 in. tread width
Treadwear
: 280
Tire/Rim Country of Origin
: Japan/China
Wheel Revs per Mile*
: 859
Wheel Rims: Custom exclusively for FIAT 124 Classica “Urbana”, 17″ x 7″, cast aluminum alloy, black diamond, 12 spokes, MOPAR Part # 68497744AA

 ➤ OEM: FIAT 124 “America” (only in Europe, MY 2017)
→ →→ →→ →a.k.a.
 FIAT “Historical” (aftermarket)
Rim Bolt Pattern: 4 x 100 PCDhistorical wheel
Rim Offset (ET)
: +45 mm 
Center Bore
: 54.1 mm
Recommended Tire Size and Rating:  205/45R17, “W” (168 mph)
Rim Country of Origin
: Italy
MOPAR Part #s: 52064513 individually 52064514 is part # for set of 4 wheels
Wheel Rims: Custom exclusively for FIAT 124 “America”, 17″ x 7″, forged aluminum alloy, silver, 4 spokes, ≈ 21 lbs.
Notes specific to these wheels:
→ →♦ Apparently they don’t have DOT certification that is needed for them to be legally sold in U.S.
→ →♦ Apparently they won’t clear Brembo brakes (front) unless spacers are added

OZ Racing Ultraleggera (Retail) – very popular aftermarket rims
Rim Bolt Pattern: 4 x 100 PCDoz-ultraleggera-hlt-colors-wheels
Rim Offset (ET)
: +37 mm (not available in ET +45)
Center Bore
: 56 mm
Recommended Tire Sizes:  205/45R17 or 215/45R17
Rim Country of Origin
: Italy
Wheel Rims: 17″ x 7″, forged aluminum alloy, 12 spokes, 20.5 lbs.
Notes specific to these wheels:
→ →♦ They will accommodate Brembo brakes (front) without spacers
→ →♦ FIAT & ABARTH OEM caps are not compatible
→ →♦ Because of larger center bore, proper lug nut installation procedure is critical 
→ →♦ Available in a variety of colors (thanks to the significant ND MX-5 market; perhaps fewer colors than shown though 😉 )


124 SPIDER ~ ADDITIONAL TIRE NOTES

Recommended Tire Pressure (B-pillar placard states 29 PSI for both front & rear tires on all models, however, in my opinion upon closer analysis of that placard):

♦  Normal loading (cargo + occupants 340 lbs.): 32 – 36 PSI (cold)
♦  High-speed driving (> 75 mph): 32 – 36 PSI (cold)

Recommended Tire Fitment Maximum Sizes (no rubbing):

With stock 16″ wheels With stock 17″ wheels
225/45R16 (for stock vehicle height) 225/45R17 (for stock vehicle height)
(winter tires = 215/45R17)
225/45R16 (if vehicle lowered ≈ 1″) 215/45R17 (if vehicle lowered ≈ 1″)

Recommended 17″ Tires for Winter season:
→ →  Vredstein Quatrac 5 205/45R17 or Vredstein Quatrac Pro 205/45R17 (source)

Recommended 17″ Replacement Tire Alternatives (non-competitive):
→ →  Michelin Pilot Sport 4  215/45R17 (sourceor
→ →  Continental ExtremeContact Sport  215/45R17 (sourceor
→ →  Continental ExtremeContact DWS06 Plus (all-season)  215/45R17 (source)

Comparison to OEM Specs 205/45R17 215/45R17 Difference
Diameter inches (mm) 24.26 (616.3) 24.62 (625.3) 0.35 (9) 1.5%
Width inches (mm) 8.07 (205) 8.46 (215) 0.39 (10) 4.9%
Circum. inches (mm) 76.23 (1936.16) 77.34 (1964.44) 1.11 (28.27) 1.5%
Sidewall Height inches (mm) 3.63 (92.25) 3.81 (96.75) 0.18 (4.5) 4.9%
Revolutions per mile (km) 831.2 (516.48) 819.24 (509.05) -11.96 (-7.43) -1.4%

Recommended 16″ Replacement Tire Alternatives (non-competitive):
→ →♦  Continental ExtremeContact Sport  205/45R16 (sourceor
→ →  Continental ExtremeContact DWS06 Plus (all-season)  205/45R16 (source)

Comparison to OEM Specs 195/45R16 205/45R16 Difference
Diameter inches (mm) 22.91 (581.9) 23.26 (590.9) 0.35 (9) 1.5%
Width inches (mm) 7.68 (195) 8.07 (205) 0.39 (10) 5.1%
Circum. inches (mm) 71.97 (1828.09) 73.09 (1856.37) 1.11 (28.27) 1.5%
Sidewall Height inches (mm) 3.45 (87.75) 3.63 (92.25) 0.18 (4.5) 5.1%
Revolutions per mile (km) 880.34 (547.02) 866.93 (538.69) -13.41 (-8.33) -1.5%


124 SPIDER ~ TIRE PRESSURE MONITORING SYSTEM (TPMS)

✅ Classica & Lusso (MY 2017, 2018) uses ABS algorithms to detect wheel rotational speed Δ; no actual TPMS sensors are in the wheel rims.
Reset TPMS lamp procedure (after insuring that all four tires match, both in diameter and pressure)
→ →• Ign ON (not ACC; more)
→ →Hold TPMS button until beep (and after lamp has flashed twice)

tpms usa

North America TPMS, courtesy of George Zug Berline

ABARTH (and MY 2019, 2020 Classica & Lusso) wheel rims have/require individual TPMS sensors:
→ →• North America:  315 Mhz  
→ →• UK/Europe + Australia:  433 Mhz; details  

Procedure to Reset TPMS, or register sensor’s ID codes after wheel changes:
→ →• Ign ON (not ACC; more)
→ →Ign OFF, wait 20 min.
→ →• Drive ≥ 16 mph (24 kmh) for  ≥10 min.

TPMS sensor

Australian Abarth TPMS,  courtesy of Clark Rees

*  Data source TireRack.com; values are adjusted to reflect representative rolling radius.  Manual calculation results may differ, using equation [63360/(πΦ)], where Φ is the tire’s unloaded diameter (inches), since Revolutions per mile of a mounted tire under load will generally be about 3% more than the calculated number.  These are most likely the numbers programmed into the PCM, for converting ABS wheel revolution data into Vehicle Speed.


124 SPIDER ~ DIMENSIONS & WEIGHT

fiat dimensionsWheelbase: 90.9 in. (2,309 mm)
Track Width, Front: 58.9 in. (1,496 mm)
Track Width, Rear: 59.17 in. (1,503 mm)
Overall Length: 159.6 in. (4,054 mm)
Overall Width (w/o mirrors): 68.5 in. (1,740 mm)
Overall Height: 48.5 in. (1,232 mm)
Laden Ground Clearance (Stock Suspension): 5.32 in. (135 mm)
Unladen Ground Clearance (Stock Suspension): 5.9 in. (150 mm)
Approach angle: 13.1°
Max. Combined Capacity of Cargo & Occupants (@ 29 psi):
→ →340 lbs. (154 kg.), as stated on B-pillar tire placard; more details
Curb Weight*, pounds (kg):
→ →♦  2,436 (1,105) six-speed manual (Classica, Lusso)
→ →♦  2,477 (1,124) six-speed manual (ABARTH)
→ →♦  2,476 (1,123) six-speed automatic (Classica, Lusso)
→ →♦  2,516 (1,141) six-speed automatic (ABARTH)
Gross Vehicle Weight Rating (GVWR), pounds (kg): 2,932 (1,330)
Corner weight distribution: LF 28% (battery?);  RF 25%; LR 23%; RR 24%

FiatClassicaWeight

Courtesy of Good-Win Racing ~ 2017 Classica with Technology package, full tank of gasoline, manual transmission

*  North American Curb Weight is defined as the weight of a vehicle in running order, unoccupied and unladen, with all fluid reservoirs filled to nominal capacity (full) including fuel, and with all standard equipment fitted (options and accessories are not included)


124 SPIDER ~ ACCOMMODATIONS & SEATS
Trunk:
Trunk Cargo volume: 4.94 cu ft (140 liters) (vs 4.59 cu ft for the MX-5)
Note: if side trim panels are removed, you will gain much more capacity
Trunk Opening Size
: approx. 35 in. W x 14 in. L (trunk cavity dimensions are larger)

Passenger Compartment & Seats:

Head Room
: 37.4 in. (950 mm); more, if seats lowered
Legroom: Classica, Lusso, ABARTH
→ →♦  43.1 in. (1,095 mm) for driver’s side
→ →♦  38.0 in. (965 mm) for passenger’s side, due to subwoofer/wedge (even for non-Bose cars)
Shoulder Room: 52.1 in. (1,325 mm)
Hip Room: 52.0 in. (1,320 mm)
Passenger volume: 49 cu ft (vs 48 cu ft for the MX-5)
seats constructionSeating Capacity: 2
Seat Travel: 8.3 in. (210 mm) driver / 6.7 in. (170 mm) passenger
Seat Back Angle: 25° nominal, 12° forward, 22° rearward
Seat Construction: The seats in our Spiders are relatively lightweight (around 30 pounds due mostly to the steel frame).  There are no springs, nor any foam, so all of the comfort and support in both the seat bottom and seat back is attributed to the combination of the outer covering and the tight mesh fastened along both sides of the frame underneath that skin.  Other than the outer coverings, the construction is exactly the same whether they are:

  • Classica’s premium cloth seats
    2017-fiat-124spider-interior-seatizer-7.jpg.image.1440
  • Lusso’s Italian Nappa leather seats
    2017-fiat-124spider-interior-seatizer-5.jpg.image.1440
    2017-fiat-124spider-interior-seatizer-6.jpg.image.1440
  • ABARTH’s premium cloth, Nappa sport leather options or the Nappa leather with Alcantara suede (microfiber) inserts used in the Recaro seats2017-fiat-124spider-interior-Seatizer-3.jpg.image.1440
    2017-fiat-124spider-interior-Seatizer-2.jpg.image.1440

In my opinion, the Classica seats are the most durable, as well as the most comfortable, especially in extreme high and low temperatures (which may be why seat warmers needed to be made available for the leather seats).

For more details on:  Adding Lumbar Support    Raising the Seats     Seat Lowering Rails     Lowering the Seats   


124 SPIDER ~ LIGHTS
Exterior Lights:

front-lites  rear-lites

Headlight Modules {1}:
→ →♦  LED fixed-aim headlights (optional)
:
→ →→ →Front side-marker lights:
→ →→→ → →North America only: WY5W (5 Watts, amber  
→ →→ →→ →incandescent),,behind an amber lens
→ →→ →→ →• All other regions: W5W (5 Watts, white
→ →→ →→ →incandescent),,behind a clear lens
→ →→ →Front (halo) parking lights: LED
→ →→ →Low-beams: LED
→ →→ →High-beams: LED
→ →→ →Daytime Running Lights (DRL)*: LED
→ →→ →Procedure to manually adjust aiming, if vehicle’s stance has been altered

→ →♦  LED adaptive (AFS) headlights (optional):
→ →→ →Front side-marker lights:
→ →→ → →→North America only: WY5W (5 Watts, amber 
→ →→ →→ →incandescent),,behind an amber lens
→ →→ →→ →• All other regions: W5W (5 Watts, white 
→ →→ →→ →incandescent),,behind a clear lens
→ →→ →Front (halo) parking lights: LED
→ →→ →Low-beams: LED
→ →→ →High-beams: LED
→ →→ →Daytime Running Lights (DRL)*: LED
→ →→ →Procedure to re-initialize auto-leveling, if vehicle’s stance has been altered

Note: Since the Adaptive Front Lighting System (AFS) headlights have to point with a bias toward the inner edge of the road so as not to “blind” oncoming traffic, depending on the region, if ordering replacement units, be sure to order the proper LHD or RHD configuration, at least in Europe  (thanks hefbadr).  These lights self-level when starting the vehicle, and they move in conjunction with the steering wheel (really noticeable in foggy weather).  The CMU personalization settings allow for unbiased aiming (straight-ahead) by switching AFS off temporarily, but perhaps for legal reasons, the UK manual doesn’t mention that alternative.

→ →♦  Halogen fixed-aim headlights (standard):
→ →→ →Front (halo) parking/side-marker lights:
→ →→ →→ →North America only: Y5W (5 Watts, amber 
→ →→ →→ →incandescent),,behind an amber lens
→ →→ →→ →• All other regions: W5W (5 Watts, white 
→ →→ →→ →incandescent),,behind a clear lens
→ →→ →High-beam/Daytime Running Lights (DRL)*:
→ →→ →→ → North America onlyHB3 9005 (Halogen,
→ →→ →→ →65 Watts, 1700 Lumen, 6000 Kelvin)
→ →→ →→ →• All other regionsH15 (Halogen,
→ →→ →→ →55 Watts, 1500 Lumen, 5000 Kelvin)
→ →→ →Low-beams: H11 (Halogen,
→ →→ →→ →55 Watts, 1345 Lumen, 6000 Kelvin); upgrade
→ →→ →Procedure to manually adjust aiming, if vehicle’s stance has been altered

headlights*  Notes regarding DRL:
→ →♦  The Daytime Running Lights (inboard of the LED halos) turn on automatically when the vehicle starts moving, and turn off when the parking brake is engaged or the gear selector is shifted to the PARK position (if equipped with automatic transmission). The CMU personalization settings allow for disabling DRL in some regions.  Pictured is a U.S. AFS headlight, as it has an amber side-marker light lens and a washer nozzle. 
→ →♦  A lower voltage is supplied to the Halogen bulbs for the DRL mode, so obviously the Lumen output is also reduced (vs High-Beam output).


Front turn signal lights {2}: WY21W, SAE 7443NA (21 Watts, amber incandescent); lamp assemblies made by Stanley for the 2014–2018 Mazda3 are utilized (much more expensive to purchase as a FIAT part)

Front Fog lights (optional) {3}: H11 (Halogen, 55 Watts, 1345 Lumen, 6000 Kelvin); recommended bulb upgrade; lamp assemblies made by Koito Lighting for the 2014–2018 Mazda3 are utilized (much more expensive to purchase as a FIAT part)

Rear side-marker lights {4}:
→ →♦  FIAT (U.S. only): W5W (5 Watts, white incandescent), behind a red lens
→ →♦  ABARTH (along wheel well trailing edge): W5W (5 Watts, white incandescent), behind a red lens

Tail Light Modules {5}:
→ →♦ 
Rear parking lights: LED, behind a red lens
→ →♦  Brake lights: LED, behind a red lens
→ →♦  Rear turn signal lights: WY21W, SAE 7443NA (21 Watts, amber incandescent), behind a clear lens

Rear Fog Light / Reverse Light Module {6}:
→ →♦ 
Reverse light: W21W, SAE 7440 (21 Watts, white incandescent), behind a clear lens
→ →♦  Rear “Fog light” (standard for Europe region): W21W, SAE 7440 (21 Watts, white incandescent), behind a red lens.backup lamp

The Euro rear fog light is a single lamp, offset from vehicle centerline and reverse light (on the driver’s side, so it’s not confused with brake lights), to meet Euro regulations (provisions for either LHD or RHD exist in the lamp housing); the wiring harness for the rear fog light exists for all regions (plugged into an empty cavity in the housing for non-Europe), but in order for it to function, a Euro turn signal stalk (has switches for both front and rear foglamps) is required; by drilling hole(s) for bulb socket(s), you can add symmetry to the Euro fog lamps (or create an additional pair of brake lights) – BillaVista’s flashing brake lights modification instructions are here.

Center High Mount Stop Light (CHMSL) Module {7}: a row of LEDs, behind a red lens

License plate lights: W5W (5 Watts, white incandescent, behind a clear lens); located on the underside of the decklid; lamp assemblies are common with the ND MX-5
s-l1600

Side repeater lights (above front wheel wells) {8}:
→ →♦  North America only: WY5W integral with lens (5 Watts, amber incandescent), behind a clear lens
→ →♦  All other regionsW5W integral with lens (5 Watts, white incandescent), behind a clear lens
Notes: Lamp assemblies common with the ND MX-5; nice alternatives with removable bulbs: smoked lens or clear lens; LED alternatives

Interior lights:

Overhead light: DE3175 (10 Watts, white incandescent, 31 mm Festoon); lamp assemblies are common with the ND MX-5 

Trunk light: DE3022 (5 Watts, white incandescent, 31 mm Festoon); lamp assemblies are common with the ND MX-5

Interactive wiring diagram (right-click it; select Full screen; select Flow; then you’ll be able to see all of the circuit paths that activate either interior light)

✅ Upgrading both interior light bulbs with Super-bright CANbus LED units* is highly recommended for significantly improved lighting

 Note: LED “bulb” substitutions can be made for incandescent bulbs, but they won’t always behave well with the Body Control Module (which interprets the very small circuit current draw as a burned-out bulb, resulting in “hyperflash”), unless: (1) at least one of the bulbs in the respective circuit remains incandescent, or (2) the LED bulbs are CANbus “error-free” units (built-in load resistor), or (3) you splice into the wiring circuit to add your own inline resistor.

Bulb replacement instructions:
Exterior    ABARTH rear side-marker    Side repeater    ▌  Interior


124 SPIDER ~ TECHNICAL SERVICE BULLETINS

FCA  # Subject
23-038-18 Convertible Top Rubs On Rear of Headrest When Opening/Closing
18-059-17 REV. A Powertrain Control Module (PCM) Update for Check Engine Light/Engine Knock/Downshift Issues
08-145-18 Security/Panic Alarm Activation (or Engine Shutdown) While Driving (due to faulty TPMS sensor(s) in ABARTH and MY 2019, 2020 Classica & Lusso wheel rims)
21st 124 Other related reference documents
[MAZDA #]
07-002/21
A/C blows warm air (due to cracked cooler pipe)
[MAZDA #]
02-001/22
Clunk noise from rear suspension 
[MAZDA #]
SA-041-20
Clock GPS Sync setting may affect clock accuracy
[MAZDA #]
R017/16C
Convertible Top Inner Cloth Falling Down Causing Poor Appearance and Obstructing View of Back Window
[MAZDA #]
09-036/22
Center Display Operates by Itself (Ghost Touch), Screen Surface Delaminating/Peeling; see article for more details


124 SPIDER ~ KEY FOB

abarth key fobKey Fob Mfr./Model #: Mitsubishi SKE13D-01 (with Panic button) or SKE13E-01 (without Panic/Security button) [same as ND MX-5 (MY 2017 only)*]
Key Fob FCC #: WAZSKE13D01 
Key Fob battery
: CR2025 (expect to replace bi-annually; avoid using CR2032 batteries; more fob info)
Key Fob battery LOW: When the START/STOP button is pushed from ON to ACC or OFF position, and the cluster Key Indicator Light flashes green for approximately 30 seconds.
Key Fob battery “Dead”: The red cluster Key Indicator Light illuminates.  If the red light remains on after replacing the battery, try holding the alarm/panic button and see what happens.

 There have been several reports that MAZDA fobs having the same FCC number were purchased as replacements, primarily because they are more plentiful and priced significantly lower, but if the SKE numbers end in -02 (MY 2018 and newer), the fob will function in the 124 Spider, but the variation will trigger an annoying red display of the cluster Key Indicator Light. 


124 SPIDER ~ PAINT
paint 124

Where to find your paint code: For North American 124 Spiders, MAZDA prints THEIR paint code on the B-pillar VIN placard (just above the striker plate for the driver’s door latch)
Paint: MAZDA‘s “Takumi-nuri”, water-based “Aqua-tech
Paint thickness (in microns per source, avoid aggressive polishing! as paint is VERY thin due to MAZDA‘s gram strategy):
→ →Aluminum body panels (hood, decklid): 33 μm; (front quarter panels): 46 μm
→ →Steel body panels (Doors, rear quarter panels): 109 μm

technology_env_other_paint-tech_en_3rd-row_img5.ts_.1602150248472800

click illustration to enlarge;  Note the absence of primer.  Both paint layers (base and clear topcoat) are applied in succession before being dried (the inner body parts by hand and the outer panels using robots), the entire process taking about 17 minutes per vehicle.

All 124 Spider Paint Colors
(MY 2017 – 2020)

(color chips are my best approximations, but may not accurately reflect true appearance)

whiteFIAT/ABARTH COLOR NAMES
(Regional and MY variations)
   
(Notes; availability)

→ →
FIAT‘s Primary (and alternative European) PAINT CODES
→ →
MAZDA‘s PAINT CODE  | MAZDA‘s COLOR NAME

Rosso Passione | Passion Red | Costa Brava 1972 Red | Hypnotique Red     (solid; MY 2017 – 2020)

→ →RKM (PR2  895B  162/C; some documents state PKM or PBM?)
→ →A7V |  —  (unnamed, as it was never a MAZDA color)  @amazon


whiteBianco Gelato | Alpine White | Ice White | Arctic White Clear Coat | Turini 1975 White |  Brillante White     (solid; MY 2017 – 2020)

→ →PWE (PWV  NWV  296A  163/C)
→ →A4D | Artic White   @amazon


Bronzo Magnetico | Magnetic Bronze | Titanium | Bronze | Magnetico Bronze Metallic    (metallic; MY 2017 – 2019 only)

PDF (PUL  QUL  399B  201/B)
→ →42S | Titanium Flash Mica   @amazon


Azzurro Italia  | Pacific | Italia Blue | Isola d’Elba 1974 Blue | Azure  (metallic; MY 2017 only)

→ →PBI (KBP  599  208/B)
→ →44J | Dynamic Blue Mica   @amazon


Grigio Moda  | Meteor Gray | Fashion Grey | Dark Gray | Moda Gray Metallic    (metallic; MY 2017 – 2020)

→ →PA5 (243/B)
→ →42A | Meteor Gray Mica   @amazon


Nero Cinema | Nero Vesuvio  | Black | Volcano Black | Jet Black | Nero San Marino 1972  | Forte Black    (metallic; MY 2017 – 2020)

→ →PXC (PX8  244/B)
→ →41W | Jet Black Mica    @amazon


Grigio Argento  | Glacier Silver Metallic | Argento Grey | Aluminum Metallic | Portogallo 1974 Grey   (metallic; MY 2017 only)

→ →PSL (NSN  348B  235/B)
→ →38P | Aluminum Metallic   @amazon


Bianco Ghiaccio Perla | Arctic Pearl | Urban White |  Crystal White Pearl | Tri-Coat White Pearl   (pearlescent; MY 2017 only)

→ →PWS (KWH  245/B)
→ →34K | Crystal White Pearl   @amazon


Bleu Scuro | Mare Blue Metallic | Nuovo Blu Mediterraneo | Dark Blue Metallic  (metallic; MY 2018 – 2020)

→ →PHB (487B  816/B)
→ →42M | Deep Crystal Blue Mica   @amazon


E9E4DDPuro Bianca Perla | Pura Bianco Perla | Nuovo Bianco Ghiaccio | Tri-Coat White Pearl  | Puro White Tri-Coat   (pearlescent; MY 2018 – 2020)

→ →PWW
→ →25D | Snowflake White Pearl Mica   @amazon


CBD5D0Grigio Chiaro | Nuovo Grigio Argento | Light Gray | Silver Metallic | Chiaro Silver Metallic   (metallic; MY 2018 – 2020)

→ →PSP (620/B)
→ →45P | Sonic Silver   @amazon


47aCeramica Gray Metallic  (metallic; MY 2019 – 2020)

 

→ →PAQ
→ →47A | Ceramic Metallic    @amazon


47aAlpi Orientali Grey  (new color exclusive to ABARTH 124 GT )

 

→ →—  (807/B)
→ →— 


Other Miscellaneous Colors

BBBCC2Black Heritage Stripe   (matte; ABARTH exclusive option)

 

→ →QKM (762/A – gloss level 15)
→ →→ →


Piano Black Trim & Mirror Covers

 

→ →— 
→ →A3F | Brilliant Black   @amazon


ABARTH Red Trim & Mirror Covers   (much brighter than Hypnotique / Passion Red)

 

→ →— 
→ →A4A | True Red   @amazon


ABARTH Wheels   (Gun Metal; ABARTH exclusive option; see my NOTE if dull/peeling)

gun metal

per Santu: Here is a picture of the color 607/B 989BB in the Alfa Romeo color book, based on the paint shop data it is the same as Abarth Gun Metal 607B 

→ →

→ →607B  (Alfa Romeo‘s Grigio Antracite recommended)

→ →GMW | Gunmetal Wheel    @amazon


Classica/Lusso Wheels    (Silver)

 

→ →XZA-W  (FIAT code for 500 wheels; needs to be verified)
→ →
→ →


124-Spider-sideviewYou may note that there are many references to MAZDA parts because the platform and a major portion of components are shared – and in many cases, the MAZDA equivalents are not only more readily available, but also much less expensive
♦♦♦♦♦

21st 124

sources: Fiat500usa.com, automobile catalogowner’s manual, Tiresize.com,  mariokart, IHeartRoadsters,  Tire Rack,   MOPAR Fluids Document,    Italian Paint Codes Chart

196 thoughts on “21ˢᵗ Century 124 Spider ~ Complete Specifications & Helpful Tidbits

  1. I updated the Sales numbers today. Over 45,000 were sold!

    I also added: optional luggage rack (MOPAR # 52060660; OEM with FIAT 124 “America” to the Body section.

    Like

  2. Added a note “Although they may appear to be similar, Fiat 500 rims do not belong on the Fiat 124 Spider!” to Wheels section to hopefully prevent my readers from ordering the wrong wheels.

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  3. Edited Key Fob section (as well as the associated blog article) based on Victor Do’s observations. The SKE # for Miata key fobs MY 2018 and newer, end in -02, rather than -01, and although the fob will function in the 124 Spider, there will be an annoying red display of the cluster Key Indicator Light.

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    • Ignazio, I just checked the Service Manual, and although the change interval for the accessory drive belt is 80,000 miles (128,000 km), the change interval for the timing belt is indeed 150,000 miles (240,000 km), so unless I’m convinced that # is erroneous, I’m not going to change it.

      Was that the source for confusion? I added the accessory drive belt change interval as a note.

      Like

      • Hm, just had a look at the user manual on the elum portal ( https://aftersales.fiat.com/elum/Home.aspx?id_language=2 ) and there it states:

        “Areas that are not dusty: recommended maximum mileage 120.000 km. Regardless of the mileage, the belt must be replaced every 6 years. Dusty areas and/or
        demanding use (cold climates, town use, long periods of idling): recommended maximum mileage 60.000 km. Regardless of the mileage, the belt must be
        replaced every 4 years.”

        for both the accessory and the timing belt.

        So the guy who created the service manual didn’t talk to the guy writing the user manual?

        Liked by 1 person

      • Apologies to Ignazio, as perhaps this was his reference (although he implied Service Manual), but the User Manual seems suspect to me, as a belt with teeth is expected to have a much longer life than a v-belt. For now, I’m not convinced that my spec needs to be altered, but thanks Tobias, for pointing out the discrepancy (there are many errors in the User manual – and some in the Service manual too 😉 ).

        I added a pdf document today: https://21stcenturyfiat124spider.files.wordpress.com/2022/08/scheduled-servicing-plan-for-124-spider-from-service-manual.pdf as the source document.

        Like

      • Going back to the timing belt change conversation, I just looked at the table in the official MOPAR service manual, and that table matches the owner manual in that it states replacement at 15 years or 150,000 miles (240,000 km). The figure (and associated caveats associated with dusty road conditions) that Tobias is referencing is for the accessory drive belt, not the timing belt. The accelerated replacement footnote regarding driving in dusty conditions is tied to 4 asterisks (****), and in the table above that footnote, the 4 asterisks are on the line that describes accessory belt replacement. There is no footnote associated with the drive belt.

        Liked by 1 person

      • From eLum download the “Libretto Uso e Manutenzione” I think I can be translated as “Service and Maintenance Manual”. It is stated to change @120.000km timing AND accessory belt. (Normal streets no dusty, obviously). Is possible to upload a screenshot here? I’m a new member 😞

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      • Yes, just click on Edit, and just add the url for the image file directly.

        The Jeep Service manual also shows the same 150,000 mile interval for the 1.4L engine in the Renegade. Modern timing belts are extremely strong and resilient. Realistically, at that mileage, the tensioner is more likely to fail than the belt. The only case where I would replace the belt early is when the car is operated in extremely hot, dry climates, or if the belt has been oil-contaminated by a leaking cam seal.

        If you are concerned after 70,000 miles, you could pull the upper timing cover and visually inspect the belt. As long as their are no cracks or signs of oil contamination, you should be fine. Since the 1.4L is an interference engine, it can’t hurt to change the belt sooner, if that helps you sleep better though.

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  4. I added a Coolant Change Interval section today, but based on my research, disagree with the Service Manual:

    Coolant Change Interval: 10 years or 150,000 miles (240,000 km), whichever comes first. However I disagree, since per the description of Mopar’s 68334695AA Antifreeze / Coolant (FL22), it is “5-Year POAT (Phosphate Organic Additive Technology)”, and therefore isn’t an “Extended Life” coolant – so 5 years or 75,000 miles (120,000 km)

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  5. SteveP provided TSB info regarding faulty TPMS sensors causing “Security/Panic Alarm Activation While Driving”. I added TSB 08-145-18 to my Technical Service Bulletins section.

    I also corrected the engine stroke spec.

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    • The difference is USA vs European service intervals. In the US the recommendation is different. I have viewed both the US and European manuals and indeed the cited service schedule is not the same.

      European service requirements tend to be based on different criteria for whatever reason.

      Like

  6. I added to Engine Specs today:

    Oil Change Interval:
    ♦ when the oil-life monitor indicates “Oil Change Due!”
    Note that the oil-life monitor should react to “severe” driving by alerting the driver much sooner than 10,000 miles (perhaps closer to 3,000 miles). This includes frequent short trips, driving in hot weather, stop-and-go traffic, track use, and driving through mountainous passes.

    Air Oil Separator (AOS) Servicing Interval (also PCV Valve): 30,000 miles (48,000 km); sooner if:
    ♦ an “oil leak” around cylinders #3 or #4 is suspected
    ♦ 10,000 miles (16,000 km) for “severe” driving, which includes frequent short trips, driving in hot weather, stop-and-go traffic, track use, and driving through mountainous passes.
    Note: nice video showing how to clean and re-use the AOS, rather than replacing with new, however PCV valve should be replaced with new.
    PCV Valve: MOPAR # 4893073AA (or equivalent, such as Duralast PCV1010DL)

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  7. Reworded specs in the Brakes section for correctness.

    Example was ➜ “Ventilated discs with 11 in. (279 mm) floating single-piston calipers”, now ➜ “11 in. (280 mm) ventilated discs with floating single-piston calipers”.

    Like

  8. Added to Electrical section (thanks azzura):

    ♦ Additionally, upon re-connection (and after a timing belt change), the UK/Euro owner’s manual indicates that the TDC sensor calibration for the ECM should be re-initialized via a “phonic wheel learning procedure” ➤ Let the engine run until the blue temperature light turns off – rev the engine min. 3 times up to 6000 rpm and let the RPM drop to idle in between – wait one minute, turn engine off, wait one minute, turn it on, wait one minute – this should store the phonic wheel values, and prevent getting intermittent P0300/P0302/P0303 misfire errors, triggering a “Check Engine” light.

    I’ve never seen this in the North American manuals, but felt compelled to add this tidbit, in case it proves helpful. I doubt that this normally needs to be done just because the battery has been disconnected.

    Also a link to an image of the aforementioned page in the manual, is included however it could be a carryover from previous Fiat engines?

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  9. I changed the Lifting Locations illustration (thanks PBDroadster) in the Body & Chassis section for clarity.

    I clarified the description for the Rear Fog Lamp today, after learning more about it:

    Rear “Fog light” (optional) {6}: Single lamp offset from vehicle centerline (on the driver’s side, so it’s not confused with brake lights), to meet Euro regulations (provisions for either LHD or RHD in the lamp housing); W21W, SAE 7440 (21 Watts, red lens, white incandescent); the wiring harness for the rear fog light exists (plugged into an empty cavity in the housing), but in order for it to function, a Euro turn signal stalk with switches for both front and rear foglamps) is required; by drilling hole(s) for bulb socket(s), you can add symmetry to the Euro fog lamps (or create an additional pair of brake lights) – BillaVista’s modification instructions are here.

    I also changed the table header column names from the default yellow to green, since discovering that the header backgrounds were not the normal black when viewing with mobile devices, making them very difficult to read.

    I also reworded the spark plug gap recommendation, so that lowering the gap somewhat was more applicable to those less likely to check and monitor that gap, rather than a general recommendation:

    For those that don’t monitor the gap, it is highly recommended that you set the gap to .023 in. – .024 in., so that it is unlikely to deteriorate outside spec range.

    Today, I learned that the author of the online Mazda MX-5 shop manual has updated the site, so that flash is no longer required to view the wiring diagram images, so I again fixed the links to that great resource.

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  10. After catching TX_Bandit’s thread on adding a nice catch can, I added this to my Engine section today:

    Oil Catch Can: If you are considering installing a catch can to reduce the amount of oil potentially entering the turbo intake, some helpful tips can be found in this forum thread (summarized in 17221′s photo)

    Like

      • Another gentleman shared his double catch can install @ https://www.124spider.org/threads/gee-willikers-billy-your-mom-lets-you-have-two-catch-cans.40637/

        After a few hundred miles of driving under normal conditions with two catch cans, here are the results:

        Approximately the same amount of fluid in both cans. I think the can with the larger hose, that connects from the AOS to the throttle body catches a lot more oil/water. The amount of fluid seems to be highly dependent on weather conditions, and its contents are also significantly darker.

        The second can (AOS PCV valve to the turbo air intake) appears to catch a lighter color Frappuccino of stuff which I think might just be a heavily aerated oil.

        Like

  11. I stumbled across a Mazda TSB having to do with a clunk noise coming from the rear suspension, and added a link to it in TSB section, as well as a note in the Suspension section.

    Like

  12. I added to the Spark Plug Torque Spec:

    Tork Motorsports insists that a proper torque should be 21 ft.•lb. (28 N•m) to nullify this from occurring.

    If any others take exception with this, please let me know.

    Like

  13. I wish I had better recall for my source(s) for both the open and limited slip differential Gear Lube specs. Steve just pointed out in another forum that the Service Manual seems to indicate the the friction modifier additive is already included in the gear lube. I’m quite certain it is not, and I think the note “Additive is contained within the specified gear oil for the rear differential” is a misinterpretation of the fact that the additive is to be added to the MOPAR # 68333589AA gear oil, not that it is already mixed in.

    Also, I call out MOPAR # 68333589AA, or a 75W-90 SG1 (GL-5) Hypoid Gear Oil equivalent, yet the Mopar catalog shows to be a 75W-85 API GL-4 Hypoid Gear Oil, and GL-4 oils don’t usually have any additives.

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  14. I spent over an hour trying to find out exactly how the block changed for RWD use, but didn’t succeed. Anyways, I reworded my Engine Specs statement:

    It’s a good thing the same engine block was first used in the Alfa Romeo Mito , FIAT Punto and Dodge Dart (all FWD cars), as additional oiling channels were added in the walls of the #2 and #3 cylinders in 2014, to resolve forced-induction lubrication issues. The RWD 124 Spider is the first longitudinal installation application of this engine, requiring additional changes to the manifolds, oil pan + dipstick, vacuum pump, timing cover, intercooler, mounts, and engine cover.

    Like

  15. Added Andrei’s refined Manual Transmission Fluid recommendation:

    Fluid Recommendation (smoother shifting in colder climates): [Andrei’s (Xtreme Revolution) Dec. 2022 update] 1 quart of Amsoil Synchromesh along with remaining fill (≅1.2 quarts) of Amsoil MTG 75W90, is highly recommended.

    Like

  16. Learned more about the thermostat, and changed:

    (perhaps because it’s a MAZDA installed part?, the 124 Spider is the only FCA vehicle that uses this thermostat; opening temp spec below also suggests that the part # is different for non-North America, but I haven’t yet found evidence of that)

    to

    the 124 Spider is the only FCA vehicle that uses this particular electrically assisted (also called “map-controlled”) thermostat that provides broader and faster operation than traditional thermostats. Rather than depending on coolant temperature alone, electric coils heating the wax inside the thermostat are controlled by the ECU to schedule opening optimally, depending on the speed and load conditions of the engine.

    Like

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