21ˢᵗ Century 124 Spider ~ Complete Specifications & Tidbits

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

Platform: MAZDA/FCA joint partnership was established to develop the 4ᵗʰ generation of N-platform roadsters:
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(s): Hiroshima, Japan (MAZDA’s same plant that produces ND MX-5); ABARTHs requiring special options like “Heritage stripe” and special badges, were finished up in either Turin, Italy or Detroit, Michigan, depending on final destination
EPA Vehicle Class: Two-seater
Drivetrain: Front-midship engine, rear wheel drive (RWD)
Reliability: Because the engine was improved upon during Dodge Dart production (2013-2016), the proven manual trans from the MAZDA MX-5 NC was retained, and the rest of the vehicle was improved/proven by MAZDA during ND’s first year of production (MY 2016), the 124 Spider’s overall reliability has proven to be excellent – the manual trans 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, 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 wasn’t capable of meeting newly-mandated stricter WLPT emission regulations)
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 Service Manual on USB: MOPAR Tech Authority 81-270-17084-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): Scheduled Service Plan
Warranty (U.S.): 4 years / 50,000 miles
Print your vehicle’s build sheet: Enter your full VIN #  here

*  Typical first-year build issues were resolved during the MY 2016 MX-5 production, leading to an uneventful 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 software issues. 

skyactiv-bodyLayout: Monocoque unibody platform ⇑ ; RWD powertrain assembly featuring power plant frame (PPF); front and rear suspension sub-framesbody aluminum
Chassis construction: High-tensile strength steel
Aluminum body panels: Hood, front quarter panels, decklid  ⇒
Steel body panels: Doors, rear quarter panels, narrow panel just ahead of decklid
Other aluminum components: 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, wheel uprights, and the optional luggage rack (MOPAR # 52060660; OEM with FIAT 124 “America” only)
Carbon Fiber composite
: Removable hardtop roof  (OEM with ABARTH 124 GT only, more details)
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 Miatas and Spiders, 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 Eye (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)  ⇒
Lifting Locations (with hoist or low-profile jack and slotted jack pad); more details

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.

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.
: FIAT 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 same multi-air engine block was first used in the FWD Dodge Dart (2013-2016), 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, 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
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?)
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 by belt-driven, Multi-Air* hydraulic actuator “brick” that controls the 8 intake valves
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)
Turbo: MOPAR # 4892938AE; Garrett GT 1446 (great article on FIAT boost control)
Turbo Diverter (Surge) Valve: MOPAR # 4892991AA
Turbo Waste Gate Solenoid: MOPAR # 4627297AB 
Maximum Turbo Boost: @ 230,000 RPM; ECM limits max. boost to 22 psi / 2.49 bar
RPM Limiter: ECM limits max. to 6,250 rpm (and 3,000 rpm, if AT is in Park/Neutral)
“Too-Cold” Disable: ECM disables starter if below -22° F (-30° C) (more details)
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)
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
Air Oil Separator & PCV Valve Servicing Interval: 30,000 miles (48,000 km) or 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 to clean, rather than replacing AOS
PCV Valve
: Duralast PVC1010DL (available at Autozone, etc.), or equivalent; no MOPAR part #, as they only stock the AOS assembly (unique to FIAT), which includes a new PCV valve.
51izodvjwcl._ac_sl1500_Spark Plugs (4): NGK SIKR9A7 Laser Iridium with a generic .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 (with a .032 in. pre-gap though).
Note: The plug gap needs to be set before installing ⇓
Spark Plug Gap Spec: .026 in. per FIAT, however Eurocompulsion recommends .023 in. – .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 .023 in. – .024 in., so that it is unlikely to 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); Note: oil and compression can slip by the spark plug threads, if the crush washer isn’t properly compressed
Ignition Coil Packs (4): MOPAR # 68320163AA are OEM; Bosch # 0221504715 are a good alternative (coils wiring diagram)
Spark Plug/Coil Pack Install: 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)
Fuel Injectors (4): MOPAR # 4627652AB are OEM; Bosch # 0280158117 [flow rate: 52 lbs/hr (550 cc/min) @ 43.5 PSI] are a good alternative
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)

Power (horsepower):
Classica & Lusso: (SAE) 160 hp (119 kW) @ 5,500 rpm
ABARTH: (SAE) 164 hp (122 kW) @ 5,500 rpm; extra 4 hp due to larger diameter exhaust crossover and mid-pipe without a resonator.  Note: Europe uses metric hp (vs SAE), which explains claims of  ABARTH producing 170 hp.

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 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)
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
EPA Fuel Economy (U.S. city/highway/combined):
→ →26/35/30 mpg with six-speed manual transmission
→ →25/36/29 mpg with six-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 Grade Recommended: API Certified, FCA MS-12991 (or FIAT‘s European equivalent 9.55535-S2 ♦ ABARTH‘s equivalent 9.55535-GH2),  MOPAR # 05127394PC  SAE 5W-40 Full Synthetic, or an equivalent [UPDATED 4/30/2021] 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 
  • 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: Although Mobil has not sought FCA certification, they officially guarantee that their Mobil 1 ESP X3 0W-40 oil is also a suitable alternative.  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 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: 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)


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); more details

Coolant Capacity:
→ →♦ 7.6 qts. (7.2 liters) with six-speed manual
→ →♦ 7.5 qts. (7.1 liters) with six-speed automatic
Coolant Change Interval10 years or 150,000 miles (240,000 km), whichever comes first; source, 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)
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 (unique to 124 Spider; opening temp spec below suggests that the part # is different for non- North America, but I haven’t yet found evidence of that)
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: MOPAR # 68385387AA (common for all Fiat 1.4 L)
Coolant Leakage:  a significant failure rate of water pumps (leaking coolant, especially among MY 2018 vehicles) seems to be prevalent, but in actuality it may simply be the improper application of sealant at the engine block interface (in lieu of a gasket).  If this is the confirmed source of leakage, Eurocompulsion  recommends using the more forgiving J-B Weld 31314 sealant, 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.”

Availability Optional: Classica, Lusso, ABARTH
Make / Model: Aisin B400 (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 A960 versions of the Aisin B400, although the housings differ slightly to accommodate mounting to respective engines.
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

Availability Standard: Classica, Lusso, ABARTH
Make / Model: MAZDA C635
Description: Six-speed; 1ˢᵗ, 2ⁿᵈ, 3ʳᵈ, 4ᵗʰ gears: Triple cone
Prior usage: MAZDA developed a different MT for the ND MX-5 (15 lbs. lighter, and presumably much lower torque capability) 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; 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); “Castrol Transmax Manual Multivehicle 75W-90” is highly recommended  (especially for cold-climate shifting; meets GL-4 per spec sheet);  Lubrimatic 55-001 pump recommended.  Also DIY instructions
Fluid Capacity: 2.2 qts. (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) 

Availability Standard: Classica, Lusso (both MT & AT)
Make: GKN Driveline (Tochigi Fuji)
: 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 washers18mm ID / 25mm OD
Fluid Requirement
: MOPAR # 68333589AA, or equivalent = 75W-90 SG1
→ →(GL-5) Hypoid Gear Oil; (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.

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
18mm ID / 25mm OD
Fluid Requirement
→ →•  4 oz. of MOPAR # 68334697AA, or equivalent 
→ →→ →FCA MS-10111 Limited Slip Additive (friction modifier)
→ →•  and  remaining capacity with MOPAR # 68333589AA, or equivalent = 75W-90 SG1 (GL-5) Hypoid Gear Oil
(Note that some equivalent ‘limited slip’ gear lubes, may already contain the required friction modifier)
Total 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.

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, at least here in the U.S.

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 afterwards, to completely discharge residual power
→ →Afterwards, upon re-connection, all modules learn current configurations, but you should re-initialize the windows and TPMS

*  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

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
F07 INTERIOR 15 Interior lighting
F09 AUDIO2 15 Audio system
F10 METER1 10 Instrument cluster
F11 SRIS1 7.5 Air bag
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
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
F40 ABS/DSC M 50 ABS/DSC system
F41 EVVT A/R PUMP 20 Engine control system
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
F50 HVAC 40 Heater + Air conditioner

Passenger Compartment Fuses:

Fuse Name Amperage Description
F01 RHT R 30
F02 RHT L 30
F05 F.OUTLET 15 Accessory sockets
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
F14 SRS2/ESCL 30

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

Port: 16-pin, white SAE J1962 diagnostic connector located behind the dashboard, above the brake pedal, used to:
→ →•  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 app (needed to interface with scanner): Torque Pro (try Lite first)

Maintenance Monitor App
: Scheduled Maintenance / Tire Rotation / Oil Change
→ →~ details
Warning Guidance App: Display of CEL messages; an OBDII device will provide more informative results ~ details
Screen Thermal Protection:  Warning message “Display is too Hot. Screen performance may be decreased until it cools” when temperature exceeds 176°F (80°C)
Fuel Economy App: Graphical display of fuel economy history ~ details
Navigation App: enabled with FIAT SatNav card
MOPAR # 68366118AA ~ details
Music Album/Song App: Gracenote® database ~ details
HD Radio Traffic App: TMC can provide real-time status of traffic for many major metropolitan areas in some firmware versions/regions/countries
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 / BSM / Illuminated Entry / Auto-Wipers / and various other Headlights, DRL and Turn Signals options ~ details

→ →♦ Double wishbone with aluminum control arms
→ →→ →(same as all ND MX-5)
→ →♦ Tokico monotube shocks (Classica, Lusso)
→ →♦ Bilstein monotube shocks (ABARTH + ABARTH GT only)
→ →→ →(same as 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)

→ →♦ Multi-link (5-arm) with aluminum bearing support
→ →→ →(same as all ND MX-5)
→ →♦ Tokico monotube shocks (Classica, Lusso)
→ →♦ Bilstein monotube shocks (ABARTH + ABARTH GT only)
→ →→ →(same as 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)

→ →♦ 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
→ →♦ 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: Rack-and-pinion  
Power Assist: Double pinion 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.

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


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.

Cracked “cooler pipe”:  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.

Standard four-wheel anti-lock brake system (ABS): Classica, Lusso, ABARTH
→ →(All components for ND MX-5 standard brakes are compatible)
→ →Front Brakes:

→ →→ →Ventilated discs with 11 in. (279 mm) 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:
→ →→ →Solid discs with 11 in. (279 mm) 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: ABARTH
→ →(All components for ND MX-5 Club’s premium brakes are compatible)
→ →Front Brakes:
→ →→ →Brembo ventilated discs with 11 in. (279 mm) 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:
→ →→ →Solid discs with 11 in. (279 mm) 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)

Power-assist Type: Vacuum Booster
Rotor Removal Aid: If OEM rotor is stuck, thread a bolt into the dedicated M8 threaded hole
Brake Fluid Type: 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) via 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)
→ →♦ 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.
Convertible Rollover Protection (same as in the ND MX-5):
→ →♦ Fixed aluminum roll-bar hoops
→ →♦ High-strength steel A-pillars


tire dimensions

Common specs for all OEM wheels (other than 124 RALLY):
Quantity: 4 (no spare wheel)
Wheel Bolt Pattern
: 4 x 100 PCD (same as NC + ND MX-5 wheels)wheel offset
Wheel 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 Seat
: Cone @ 60° anglewheel caps
All OEM Center Cap Dimensions
→ → 50 mm external diameter
→ →
44 mm internal diameter 
FIAT center cap MOPAR Part #: 68098829AA
→ →(same as Fiat 500)
ABARTH center cap MOPAR Part #
: 4726183AB
→ →(same as ABARTH 500)

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


 ➤ 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
: 280
Tire/Rim Country of Origin
: Japan/China
Wheel Revs per Mile*: 875
Wheel Rims: Custom exclusively for FIAT 124 Classica, 16″ x 6½”, 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″, aluminum alloy, silver, 12 spokes, 20.4 lbs., MOPAR Part # 68417402AA

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″, 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″, 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″, 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
: 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″, aluminum alloy, black diamond, 12 spokes, MOPAR Part # 68497744AA

 ➤ OEM: FIAT 124 “America” (only in Europe, MY 2017)
 ➤ also a
ftermarket as
 FIAT “Historical”
Wheel Bolt Pattern: 4 x 100 PCDhistorical wheel
Wheel 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″, 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 


Recommended Tire Pressure (B-pillar placard states 29 PSI for both front & rear tires on all models, however, 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 (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 (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%

Tire Pressure Monitoring System (TPMS):

✅ Classica & Lusso (MY 2017, 2018) uses ABS algorithms; no actual wheel sensors
Reset TPMS lamp:
After insuring that all four tires match (both in diameter and pressure), Ign ON (not ACC; more), Hold TPMS button until beep, and lamp has flashed twice.

tpms usa

USA rim courtesy of George Zug Berline; click on to enlarge

ABARTH (and MY 2019, 2020 Classica & Lusso) wheels have/require
individual TPMS sensors:
→ →• North America:  315 Mhz  
→ →• UK/Europe + Australia:  433 Mhz; details  
Note: If the sensors are the new rubber type, they are not reusable on replacement rims, per MAZDA bulletin.

TPMS sensor

Australian Abarth rim photo, courtesy of Clark Rees; click on to enlarge

Reset/Register TPMS sensor’s ID codes after wheel changes:
Ign ON (not ACC; more), Ign OFF, wait 15 min.,
drive ≥ 16 mph for 10 min.

*  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.


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)
Minimum Ground Clearance (Laden, Stock Suspension): 5.32 in. (135 mm)
Unladen Ground Clearance (MT ABARTH, 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%


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)

Seating Capacity: 2
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)
Seat Travel: 8.3 in. (210 mm) driver / 6.7 in. (170 mm) passenger
Seat Back Angle: 25° nominal, 12° forward, 22° rearward
Passenger volume: 49 cu ft (vs 48 cu ft for the MX-5)
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)

Exterior Lights:

front-lites  rear-lites

LED adaptive headlights (optional) {1}:
→ →Front side-marker lights:
→ →→ →WY5W (5 Watts, amber, U.S. only)
→ →→ →W5W (5 Watts, white)
→ →Front (halo) parking lights: LED
→ →Low-beams: LED
→ →High-beams: LED
→ →Daytime Running Lights (DRL): LED
→ →Procedure to re-initialize adaptive aiming, if vehicle’s stance has been altered

Halogen fixed-aim headlights (standard) {1}:
→ →Front (halo) parking/side-marker lights:
→ →→ →WY5W (5 Watts, amber, U.S. only)
→ →→ →W5W (5 Watts, white)
→ →High-beam/Daytime Running Lights (DRL):
→ →→ →North America: HB3 9005 (65 Watts)
→ →→ →All other regions: H15 (55 Watts)
→ →Low-beams: H11 (55 Watts); recommended upgrade
→ →Procedure to manually adjust aiming, if vehicle’s stance has been altered

Front turn signal lights {2}: WY21W, SAE 7443NA (21 Watts)
Front Fog lights (optional) {3}: H11 (55 Watts); recommended upgrade
Rear side-marker lights (FIAT U.S. only) {4}: W5W (5 Watts)
Rear side-marker lights (ABARTH) {4, but along wheel well edge}: W5W (5 Watts)
Rear tail lights {5}
Brake lights {5}: LED
Rear turn signal lights {5}: WY21W, SAE 7443NA (21 Watts)
Reverse lights {6}: W21W, SAE 7440 (21 Watts)
Rear Fog light (optional) {6}: W21W, SAE 7440 (21 Watts)
Center High Mount Stop Light (CHMSL) {7}: LED
License plate lights {
underneath 7}: W5W (5 Watts)
Side repeater lights (above front wheel wells) {8}: WY5W integral with lens (5 Watts); 
(nice alternatives with removable bulb: smoked lens or clear lens)

Interior lights:
Overhead light
: DE3175 (10 Watts, 31 mm Festoon)
Trunk light: DE3022 (5 Watts, 31 mm Festoon)
✅ 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


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
  Other related reference documents
A/C blows warm air due to cracked cooler pipe
Clock GPS Sync setting may affect clock accuracy
Convertible Top Inner Cloth Falling Down Causing Poor Appearance and Obstructing View of Back Window


Key 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-annuallymore 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

 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.

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 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


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 approximations, and may not accurately reflect true color)

(Regional and MY variations)
(Notes; availability)

→ →
FIAT‘s Primary (and alternative European) PAINT CODES
→ →

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

→ →PKM (PR2 895B 162/C; some documents state 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)

→ →607B  (Alfa Romeo‘s Grigio Antracite is recommended)
→ →GMW | Gunmetal Wheel (needs to be verified)   @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
sources: Fiat500usa.com, automobile catalogowner’s manual, Tiresize.com,  mariokart, IHeartRoadsters,  Tire Rack,   MOPAR Fluids Document,    Italian Paint Codes Chart

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

  1. I would like to thank you for your site, been looking for Info on my Spider specs for sometime now. will save this site and use it in the future. Again THANKS

    Liked by 1 person

  2. Writing everything into a blog helps me organize all of the info I gather, and it sure beats having scraps of paper with notes in a pile or folder 😉

    …and it hopefully helps out other 124 Spider owners too!

    Liked by 1 person

    • Ameridan I thought you might want this info.

      After buying H&R 30/30 lowering springs for 2018 Abarth they actually lowered the car 30 mm at rear and 45mm front with a bone shaking harshness on larger bumps and woeful oversteer and overall balance (do not believe the glowing reports) as an ex formula 3 technician, I decided to check it out and the springs are manufactured to lower 30/30 but not taking into account the front has a ratio of 10 mm at the spring to 15 mm at the wheel hence the 45 mm drop at the front .and the rear has a 1 to 1 ratio as the spring is attached to the hub.

      I have refitted the original springs after machining a new groove in the shocker body 15mm lower at rear and 10mm lower at front giving equal lowering of 15mm and maintaining balance and ride quality with lower roll centre .
      Also somewhere in my research on the net there was some info about the spring height /wheel travel claiming 0.75 front and 0.66 rear also misinformation. I have measured this myself and my info is correct / feel free to edit this to a more readable diatribe.

      Liked by 1 person

  3. I am planning to take my car to a track later this month. But the track owner wants documentation of the Spider’s rollover protection. They allow the current Miata on the track with its factory rollover protection. And they say they will allow my car if I can document it. They told me to check the manufacturer’s specs. But so far I can’t find this info anywhere. I can’t find the info for the Miata either so I can compare. Any idea where I can get this?


  4. Good question! I looked in my Specs files and found nothing. Since “Rollover Protection System” is listed as a standard item for every 124 on some dealer’s sites, and since it consists of EXACTLY the same components as those in the MX-5 (perhaps that is enough for some track owners?), I expected “Rollover Protection System” to appear on my official build sheet, but it isn’t listed there either unfortunately. If it is listed on your build sheet, perhaps that can be used for documentation purposes.

    Add your VIN to the end of this link to create a detailed pdf file of your 124 Spider build.

    For the heck of it, I added:
    Convertible Rollover Protection: same fixed hoops as MX-5
    to the SPIDER ACCOMMODATIONS section of my Specs page, but I doubt that will carry much weight with track owners 😉

    At many SCCA events, apparently the factory hoops are acceptable, but only if your vehicle is otherwise unmodified.


    • I already had the build sheet. But it doesn’t list any kind of rollover protection. In all my searching I still haven’t really found what I’m looking for. But I did find this link to the safety and security section of the Press Kit for the Spider. I thought you might be interested in it.


    • Debbie, I address that issue in my first blog article. I just measured the trunk opening today and added that info. I am able to get two large folding chairs into my trunk with plenty of room for other cargo and they are longer than the opening.

      I’ve also added the opening dimensions to the Specs page for you 😉


    • If your beach chairs are unusual, you could take one of your chairs to your local dealership and see if you can jam them in. lol Joking aside, you can purchase an aftermarket chromed exterior luggage rack that mounts on the trunk lid… kind of a 50’s/60’s retro kind of look, but with that you could strap pretty much anything on (so long as it didn’t weigh so much that it caved the trunk lid in).


  5. Great resource Dan. I’ve downloaded and printed out the booklet. I’m fairly sure the centre hub for the wheels is 54.1mm if it’s the same as the MX5.


  6. Tire pressure warning light on my Classica will not go out. Reset doesn’t work even after trying all suggestions. Any ideas? Dealer can’t help either.


    • Do you mean the salesman can't help you?
      The dealer service department has to help you resolve this warrantied service issue. They have a procedure to follow to lead to the root cause, as the lamp may be indicating trouble with an ABS related component.


      • Service only said it was “temperature change”. 4,000 mile road trip later it’s still on and reset doesn’t change it.


  7. Just noticed a small mistake. The manual transmission you have listed is C635, with is actually a FIAT-made dual clutch used in other FIAT and Alfa Romeo models. It’s not what’s in the 124. You correctly state that it’s the Miata NC’s transmission, but that’s the Aisin AZ6.

    Liked by 1 person

    • Thank you Tom. This was my source for that info.

      Additionally, according to Fiat’s Press Releases though (including this Canadian document), the manual transmission used is the C635. I am therefore not altering that spec.


  8. Hi,

    Great info here, thanks!

    Have you encountered the issue I have with my Abarth 124 where when I open the roof with the ignition off, the windows drop 2-3 inches but then I can’t move them either up or down unless I start the engine. simply switching the ignition on wont move them, odd!?

    Liked by 1 person

    • Just turning on the ignition works for me and is all that should be necessary. You are probably only putting the car into ACC mode, rather than ON (one more tap on the switch).

      I’m in the habit now of leaving the engine running while raising/lowering the top, adjusting the windows and then turning off the ignition to avoid all the inconvenience.


  9. Dan, would you check your source for “Oil Drain Plug Torque: 19 ft.-lb.”. I’m looking at the “Engine Oil Drain Plug” spec in the manual and it says 20 Nm.


  10. I can’t find any mention of that in my Owner’s manual. On a Dart forum, I just found 27 N-m which equates to 19.9 ft-lbs. I can’t recall where my original source was from.


  11. Thank you Greg. Based on that, I’ll update that spec then.

    Also, based on this thread, I updated the Halogen headlight bulb specs:

    North America: HB3 9005 (65 Watts)
    All other regions: H15 (55 Watts) 


    • Thanks Peter. I already had the LSD listed as standard with Abarth, but I’m breaking it out separately now. I found “Mopar Long Life Limited Slip Additive” specified in the 2017 Abarth User’s Guide and I’m adding that accordingly.


  12. I added tire treadwear, tread-width and tire/rim country-of-origin to the Specs today, using Tire Rack as my source. I also removed the link to the printable compilation, since it was uncorrected and becoming outdated.


  13. I’m going to stick my neck out and cancel my statement “Abarth wheels have/require individual 433 Mhz TPMS sensors”. I can’t recall all of my sources at the time, but as an example, based on Hound’s comment that insisted on 433 Mhz, if you analyze what actually ended up working for him – the Schrader 33500 TPMS sensor, it actually is capable of using either 433 Mhz or 315 Mhz, and he may not realize that Discount Tire probably changed the frequency from 433 to 315 to get those sensors working.

    All indications are that the necessary frequency is in-fact 315 Mhz for our 124 Spiders (the 500s use the 433 Mhz however, which probably adds to the confusion), similar to the MX-5 ND.

    → →• North America: 315 Mhz
    → →• UK/Europe + Australia: 433 Mhz


    • I think you’re correct on 315 MHz for the TPMS sensors. I just got wheels with “CONTINENTAL 315MHZ SENSOR” from Tire Rack for my 2017 Abarth and there’s no warning light.

      Liked by 1 person

  14. Clarified Brembo brakes, DSC button function, airbags, parking brake and coolant note.

    Added engine air filter, cabin air filter and ignition coil information.

    Added “Firing Order: 1 • 3 • 4 • 2 (# 1 is closest to the radiator @ timing belt end of engine)” [thank you Gregory for cylinder 1 info] that may prove helpful to anyone getting specific DTC code(s) pointing to a problem with a specific spark plug or ignition coil.


  15. Sean Marshall & Ferny Vera have helped to reveal Fiat’s revised recommendation regarding the coolant for the 124 Spider, and I’ve revised the Specs Coolant section to reflect that. Essentially, Fiat got Mopar to stock a FL22 coolant that matches the green coolant that Mazda installs in our cars, and now recommends installing that, instead of the purple coolant, at least until a full flush & replace is performed.


  16. I don’t recall where the lug nut torque spec of 65 ft.•lb. min. / 87 ft.•lb. max. originated from, but the Fiat service manual specifies 94 ft.•lb., so I’m changing the spec accordingly.


  17. Took my 14,000 mile 2017 to the dealer an extra oil/filter/fluid check 3 weeks ahead of my upcoming 7500 mile road trip. I got it back with new oil and filter plus a “multi-point inspection” sheet showing everything to be perfect. But actually, the coolant level is way below “L” when cold and barely reaches “L” when hot. Next appointments available – after I have to leave. Based on the info here and the fact that no coolant has been added in the past, I’m thinking I need a visit to the Mazda dealer for some green FL-22. But – the Fiat owners book (not always the best source) says when adding (not replacing) the correct Mopar coolant to the car, use a “minimum 50% mix”. With water or what? Does that also apply to the green FL-22 from Mazda ?


    • John, I bet if you return to the service bay of your dealer, they would add some FL22 for you (if they stock it, as it’s only used in the 124 Spider, which might explain why they skipped). It comes in either premix or concentrate. Distilled water (to insure proper pH) only gets added if coolant concentrate is used! The usual % of added water would be 45%, but in the really cold states, 40% is ideal.

      If you visit a Mazda dealer, ask how much for a jug. It may be reasonable, unlike the Mopar product.


  18. I revised the I revised the Oil Filter Cap Torque Spec to read:

    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

    as it just stops turning once the O-ring compresses.


  19. Hearing about instances of misfiring after installing alternate coil packs, I removed the Alfa coils recommendation and added a note regarding the requirement of applying dielectric grease to the spark plug end of the tube.


    • Dan, can you elaborate as to which coil packs were experiencing issues? With my dealer’s assistance, I completed my components install from EuroCompulsion, and part of that package was the Alpha Romeo 4c coil packs. I’m not experiencing any misfires, but then again, I’ve also installed different plugs (with a tighter gap), and loaded new ECU tuning. TIA…


      • Hi Cal. This is the most recent instance. Patricio also installed Alfa Romeo 4c coils (along with Brisk plugs) and found that the tubes were disintegrating from the arcing. By the way, what’s easier: applying the grease to the outside of the plug OR the inside of the tube? I’m assuming the latter. Good to hear yours is running great, but I’ve read that the tubes will have a short life, if there is arcing, which the grease inhibits.


      • I appreciate that information. I’ve just had my install running for a little over a week, and less than 10 hours driving time. I’ll take the sage advice and get some grease applied to the plugs. Thank you…

        Liked by 1 person

  20. I recently watched an interesting video regarding the gram strategy results for the ND MX-5, and incorporated notes regarding the 15 lbs. reduced from the differential housing and another 15 lbs. reduction in the manual transmission (which we fortunately didn’t get).

    I also added more details on the LSD:

    Make / Model: GKN Driveline (Tochigi Fuji) / Super LSD
    Torque Bias Ratio: 1.8

    as well as clarification to LSD gear oil spec “(some equivalent products labelled ‘limited slip’ may already contain the required friction modifier)” for those considering alternatives like Amsoil, Ravenol, Castro, etc.


  21. Added a Bluespark box.
    Had the 124 Abarth Spider dyno tested and here are the result figures flywheel power
    Previous 125 kw – 250 nm – 170hp
    155 KW – 488 NM – 208HP


    • Hi Rainer, did you do any other mods? I fitted a Bluespark after seeing your testimonial on their site and I know it is very much faster but that torque number is ridiculous!!


  22. Excellent series of specifications – just a note for the wheels section. If you have Mopar locking wheel nuts installed, be aware that the key requires a 19mm socket. The standard wheel nuts are 21mm. I may switch to Mazda locking wheel nuts – these are 21mm.

    Liked by 1 person

  23. So, I’ve recently come across a Mopar document that has altered a few of the fluid callouts for the 124 Spider, and in some cases disagreeing with workshop manuals and the labels adhered to the vehicle. I think the callouts are vague intentionally, to encourage vehicle owners to have their vehicles serviced at the dealerships.

    ♦ For instance, they changed the Air Conditioning refrigerant to HFO-123yf, which I think is a typo, because i think they really mean HFO-1234yf, and it is claimed to be a compatible alternative (that meets EU standards) that is a little bit more environmentally friendly than HFC-134a. I’m going to add as a note to my callout on this one.

    ♦ Next is Automatic Transmission Fluid. The callout has been JWS3309, but now seems to be JWS3324? If you look up the part #, JWS3309 is still specifically specified however, so this may be another error.

    ♦ The callout for manual transmission fluid is still vague, but I’m leaving the GL4 requirement in my Specs, so that nobody installs a GL-5, or a GL-4/GL-5 combo fluid unknowingly, as that is not a recommended alternative.

    ♦ The recommended differential gear oil should be 75W-90 SG1, rather than 75W-90 GL-5 that my previous research had revealed. I have a feeling that these two callouts are very similar, and I am leaving my GL5 API rating in place. SG has no published “spec” behind it to identify non-Mazda/non-Fiat products against. And my additive requirement spec for those with LSD, is still spot on.

    ♦ Mopar finally corrected the callout on the engine coolant to match my Spec, which called for a FL-22 equivalent, as I was already on top of that one.


    • I just went to both a Mazda and a Fiat place in Canada asking about the differential oil.
      Mopar part number is 68333589AA whether it’s the open diff or the LSD for $89 per qt.
      Mazda number is 0000-77-SG1-QT for the MX-5 2016+, also known as “Mazda Long Life Hypoid Gear Oil SG1” for $45 per qt.
      Neither had any additive to be added to it. I wonder why? Maybe the SG1 stuff is just about a GL-5 with the LSD additive?


      • The Mazda equivalent always seems to be much cheaper. However, if you have a LSD, just because the additive wasn’t in stock, doesn’t mean it shouldn’t be added. Because of the low volume, the Parts Departments are stocking very few items for 124 Spiders. If you check the Owner’s Manual, you’ll see the required additive. There is also a good possibility that the dealer hasn’t had to work on any LSDs yet, but the additive is definitely required, and both Service and Parts Departments should absolutely be familiar with that (see document below).

        I provided a Mopar part # and link to help you locate the required additive, or as one alternative, you might consider the AMSOIL equivalent that has the additive already included in a package that is supposed to make it very convenient to fill the differential.

        Liked by 1 person

      • Yeah my bad, I didn’t mean they didn’t have it in stock.
        I don’t have a picture, but I looked at similar papers on both dealers’ computers. Neither dealers mentioned the additive being needed.


  24. Added to Battery Specs: The ⊕ positive terminal should always be disconnected from the battery, prior to working on any electrical/electronic components:
    • Tap the brake pedal afterwards, to completely discharge residual power
    • Afterwards, upon re-connection, all modules learn current configurations
    • The sensor module attached to the ⊖ negative terminal makes it somewhat fragile

    And added to Engine Specs: Re-calibrate Throttle Pedal (required after any ECU alterations): Ign ON (not ACC; more), press accel pedal to the floor 5X (within 10 seconds), Ign OFF (for another 10 seconds)


  25. Paint code for the wheels, compliments of a UK owner who just had his repaired (you can see his thread on this in the Spider forum). His photos show the before and after, and it looks like a spot-on match. He says they used Alfa Romeo paint code 607B Grigio Antracite

    Liked by 1 person

  26. Added to the Wheels section: the exclusive OZ wheels in white that were produced for the Abarth 124 Rally Tribute (same as GT wheels, but white instead of black).

    Added a Wipers section: identifying Mazda part numbers for both wiper blade assemblies, as well as for the blade inserts only.


  27. Hey @ameridan,
    May you please consider adding the common upgrades for ignition coils here:
    ALFA 4C up to 2014
    Bosch 68122852AA
    Alt: 55214926

    ALFA 4C 2015+ {incl Giulia}
    Eldor 68308653AA
    Alt: 55267630


    • Sorry, but I don’t comprehend which coils you are recommending as upgrades to the Mopar coils??
      Bosch, Eldor or both? Has anyone verified that they are indeed better?
      And what are the Alt #s (Mopar, Fiat,)??
      I notice that Eurocompulsion doesn’t reveal any Bosch part #s for the Alfa coils they sell, and they state “A great replacement for the inferior factory BERU coil-packs”. Are the Mopar coils BERU? I thought I read somewhere that Mopar coils haven’t been BERU since the 124 has been in production, and that they are actually Bosch as well?

      I’ll gladly add the recommendation back to the Specs section (it was there at one time) once the confusion is cleared up as to whether the Alfa coils are actually better, and which ones specifically.


      • My bad, I didn’t read the entire comment thread.
        Those are Alfa 4C coils mentioned on a Fiat 500 forum. Alfa switched from Bosch to Eldor units in 2015, which seem to be better.
        I am a little confused, trying to find more info, and don’t know if we need the upgrade on the 124. Another person mentioned we already have the upgraded coils, and taking the cover off on mine shows some Eldor units but with different part numbers than the Alfa 4C ones.

        Liked by 1 person

  28. Hi ameridan,
    Great site! Thanks so much for doing it.
    I was wondering if you might know if that lighter blue (Azzurro Italia / PBP (KBP 599)) only shows up on the limited edition 2017s, also known as Prima Edizione Lusso, of which apparently only 124 were sold in the US ?
    Thanks much in advance, for any help.


  29. That’s a nice find! I found Grigio Argento and Bleu Scuro already. If anyone finds more verified match-ups, let me know, and I’ll add them. I didn’t catch any trim and wheel colors though.


  30. Need some help, both my side lights on my Lusso have stopped working, turn side lights on and only tail and rear number plate illuminate. DLR are working okay and go off when handbrake applied





    • Paul, are you referring to the side marker lights on the fenders, just behind the front wheel wells? If yes, and you may have already done this, do a quick check of your fuses to make sure none are burned out. The side markers behind the front wheel wells are enclosed units and the bulbs are not replaceable in them. You have to purchase and replace the entire component, including the angular plastic housing that fits on the fender. If you do have to replace them, I recommend sourcing a non-OEM replacement from Moss Motors that does allow you to replace just the bulbs. It’s a one time up front cost that’s on par with the cost of the OEM units, but any subsequent bulb burn outs become dramatically less expensive.


  31. When Paul stated “turn side lights on and only tail and rear number plate illuminate”, I assumed he meant the lights behind the rear wheels, and I find it hard to believe both those bulbs have failed already, so I didn’t have anything helpful to offer.

    The front lights Cal mentions will only illuminate in conjunction with the turn signals, so Paul if those are the lights in question, there is probably nothing wrong, as shown in this photo:


  32. Paul Carruthers – then I think the next logical step would be to replace the two bulbs, or at least replace one to see if that’s the fix. If you look around page 136 of your owner manual (in the section called Replacing a Bulb in the Abarth version of the owner manual), it shows you how to gain access to the bulb in question. It will require the removal of five plastic pins that hold the front section of your front wheel liner in place, and, turning the wheel to give you more access to the space.

    Here on Dan’s most excellent reference site, under the specs, exterior lights section, you’ll find a link that points to a thread on the 124spider.org site. Scroll down about two thirds of the way in that thread, and you’ll see detailed instructions on how to access and change these bulbs. It’s more detailed than what’s in the owner’s manual, and might be easier to understand if you’ve never done this before on the Spider.

    In all honesty, anything above the fog lights is hard for me to get to without actually removing the tire from the car. My hands and arms are too big to fit in the gap when you merely turn the wheel all the way in one direction. I don’t know your “do it yourself” skill levels, but if you don’t have the tools to lift your vehicle to safely remove the tire, it might just be best to take it to a shop to get the bulbs replaced.

    I’m hoping this is just a matter of coincidence that both bulbs burnt out at the same time, because if it’s just a bulb replacement, it’s relatively easy, fast, and one of the least expensive repairs to can complete. Best wishes for success…

    One final small tip…. a very small flat bladed screwdriver is an excellent tool to pop out those plastic rivets that hold the fender liner in place. They each consist of two pieces, an outer housing, and an inner pin that you need to pop partially out to loosen the rivet assembly so it can be extracted from the vehicle.

    Liked by 1 person

  33. Had to use my fog lights yesterday and was astonished about their non-performance. Ordered a set of Osram Night Breaker Silvers and had the OEM replaced this morning at the dealer. Already had an appointment there for mounting winter tyres so they changed the lamps for free *thumbs up*

    Little information tidbit:
    OEM fog lights in mine were Philips H11 LL (product code 12362 LL). A quick google search indicates that this is a long life (hence LL) bulb, probably this https://www.philips.co.uk/c-p/12362LLECOC1/longlife-ecovision-car-headlight-bulb.
    Wondering if LL also stands for ‘less light’ 😉

    Subjectively the Osrams are brighter. Have to wait until the next time we’re having fog for a more profound verdict.

    Liked by 1 person

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