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NB to NA Miata Compatibility Guide

NB to NA Miata Compatibility Guide

Posted by Esteban R on Jan 2nd 2019

Comprehensive guide showing which parts from a 1999-2005 Miata fit your 1990-1997 Miata.

This compatibility guide is meant to be a reference point for 1990-1997 (NA) Miata owners looking to upgrade or replace certain parts with items from the second generation 1999-2005 (NB) Miata. Parts that are a direct bolt-on fit will simply be marked "direct fit", while parts that require other components or modifications will have more detail.

**The majority of this guide only references non-Mazdaspeed Miata parts**. For parts specific to the 2004-2005 Mazdaspeed Miata, the last section will cover which parts will fit NA's. 


Exterior

Factory Hardtop: Direct Fit, same design. If the hardtop you purchase came from a 2003-2005 Miata you would need to change out the front top latches to the 1990-2002 style, so that these can be compatible with your existing top latch striker plates. This way you would have matching top latch and striker designs for both your soft top and hard top. **Note: early 2003 models produced before 11/1/2002 came equipped with the older style latches**. If you'd like to use the defroster option on your NA Miata there is a thorough article here explaining how to go about that for your specific year.

Soft Top Assembly with Glass Window: Direct Fit on a car with no roll bar. If using an aftermarket roll bar that was designed for an NA, check to see if it is compatible with a glass window top. Reuse your existing top latches and strikers. If you'd like to use the defroster function of the NB softtop, follow the link above in the hardtop section. 

Convertible Top Frame: Direct fit. We prefer to use the NB frame on an NA when installing a new aftermarket replacement top with glass window because it is already equipped with the window support straps from the factory and is easier to lower and raise the top. Make sure to use new tension cables for an NB when using the NB frame.

Soft Top Weatherstripping / Seals: Direct Fit

Top Latches: 1999-2002 are a direct fit, same design. If you're using the updated latches on Miatas produced after 11/1/2002, make sure to use the updated striker plates as well. 

Windshield: Direct Fit

Wiper Cowl: Direct Fit

Wiper Arms: Direct Fit

Window / Door Moldings: Direct fit. The NB ones are less prone to cracking and rusting. 

Door Bushings: Direct Fit

Door Sill Plates / Scuff Plates: Not a direct fit, requires modifications. 

Front Bumper Side Marker Lights (amber): Direct Fit

Rear Bumper Side Marker Reflector (Red): Direct Fit, but the NB's only have a reflector, while the NA's have an actual light, so we do not recommend this. 

Hood, Bumpers, Fenders, Doors, Mirrors, Trunklid, Headlights, Taillights, Fog Lights, Side Skirts, Mudflaps, Gas Lid and Power Antenna: Do not fit. 


Interior

Seats:

1990-1993: Using the NB seat rail they bolt on directly to the car. However, the 90-93 seatbelt does not work correctly with the NB seat-mounted buckles, so those can be removed from your NB seats and you would retain your 90-93 body-mounted buckles. If you'd like to ditch the 90-93 buckles and use the NB ones, you would need to install a set of 1994-2000 seatbelts. 

1994-1997: Direct fit with use of NB seat rails. 

Seatbelts:

1990-1993: NB1 (1999-2000) seatbelts can be used in conjunction with 1994-2005 seats that have the seat-mounted seatbelt buckle. NB2 (2001-2005) seatbelts are not recommended.

1994-1997: NB1 (1999-2000) seatbelts are compatible. NB2 (2001-2005) seatbelts are not recommended. 

Seatbelt Buckles / Receivers: Direct fit on a 1994-1997 Miata. Not directly compatible with 1990-1993 unless one of the above scenarios applies. 

Steering Wheel with Airbag: Popular upgrade that requires a couple modifications. First modification needed is to drill a couple holes on the backside of the steering wheel to allow for the correct engagement of the combo switch pins that allow the turn signals to cancel at the correct moment. Second modification is to adapt the airbag and horn connectors from your NA on the NB airbag and steering wheel. There are various DIY's on this modification available online. ***Do these modifications at your own risk, a mistake here can be potentially life-threatening***

Dash: The NB dash will physically bolt into place on an NA with the only physical modification needed being a notch cut out behind the cluster for the NA speedo cable to fit. When purchasing an NB dash make sure you get the glovebox, cluster hood, bolt covers, column cover, radio surround trim, NB1 or NB2 center console, passenger airbag cover (90-93) or complete passenger airbag (94-97). You will also need the window switch and mirror switch if your particular NA has these options. Highly recommended to get the NB HVAC controls as this will make the whole install a lot cleaner and will allow a nice install of a single DIN radio with an NB storage cubby or a double DIN radio. 

You would need to transfer your existing dash harness and also reuse your cluster, dimmer switch, cruise switch (if equipped), and hazard / pop up light switch. Wiring modifications will be needed for the following: NB HVAC controls, NB window switch, NB mirror switch, NB hazard switch. Extending the wiring for the 12V cigarette lighter socket and NA hazard / pop up headlight will also be required (we like to keep the NA switch hidden inside the glovebox). 

Many articles are available on the forums that show exactly how to do the wiring changes, but basically the less option-heavy your NA is, the easier the NB dash swap will be. 

For the full clean NB look, NB1 (1999-2000) door panels are recommended, but not necessary. 

Center Console: Only compatible when used in conjunction with the NB dash.

Instrument Cluster: Not easily compatible, requires extensive wiring modifications, we don't personally recommend it.

Door Panels: Only recommended if being used in conjunction with an NB dash. The NB1 door panels will require half of the effort as the NB2 ones, but will still be a tedious task to get them to fit nicely. 

Shift Knob: Direct Fit

Shift Boot: Requires small modifications to the holes on the base of the shift boot to properly attach to the NA shift boot retainer.

Parking Brake / E-Brake Handle: Direct Fit

Cluster Hood: Does not fit any year NA dash, only with an NB dash.

Steering Column Bottom Cover: Does not fit any year NA dash, only with an NB dash.

Ignition Switch: Does not fit, different style connectors.

Combination Switch: Does not fit.

Sun Visors: Direct Fit

Dome Light: Direct Fit on a 1996-1997. 1990-1995 cars have the rearview mirror mounted in this spot instead of a dome light.

Rearview Mirror: Direct Fit on a 1996-1997. 1990-1995 cars are mounted on the windshield frame instead of the windshield itself like 1996+ cars.

Glovebox: Does not fit any year NA dash, only with an NB dash.

Main Floor Carpet: Fits a 90-93 but will look wrinkled in the passenger side tunnel area due to the ECU cover plate. If you remove the ECU cover plate it'll sit more flush, but leaves the ECU more susceptible to damage. 

Fits a 94-97 with no fitment concerns.

Carpet Behind Seats: Direct fit on a 90-93. Carpet texture will change, so make sure you're replacing the entire carpet set for it to match. 

94-97 has a molded section on the passenger side for the ECU / ABS module (if equipped), so the NB carpet piece will not fit here correctly. If you have a 94-95 it's best to use the 96-97 carpet piece for this section as it will have the same texture as the NB carpet, but will also be molded for the ECU. Note: neither the standard tan or parchment colors will match the NA tan.

Carpet Underneath Soft Top (parcel tray carpet): Direct fit on all years, just note color and/or texture differences if not installing as part of a complete set.

Floor Mats: Direct fit with use of NB dead pedal.

Dead Pedal: Direct fit with use of NB floor mats.

Clutch Pedal Assembly: Direct Fit

Metal Parcel Tray Cover: Not compatible

Fuel Pump Cover: Not compatible

Fuel Hose Access Cover (small one towards the back): Direct Fit

Convertible Top / Rain Rail Retainer Brackets (3 piece): Direct Fit

Windblocker: Fits, but can only use one attachment point on each side instead of the two on each side on the NB. Can be modified for better fit. 94-97 cockpit brace should removed for best fit.

Bose Windblocker with SpeakersFits, but can only use one attachment point on each side instead of the two on each side on the NB. Can be modified for better fit. 94-97 cockpit brace should removed for best fit. Speakers will need custom wiring in order to work.

Top Boot Cover: Direct fit with use of the NB factory snaps (2 per side).

Plastic B-pillar Panels / Seatbelt Tower Panels: Direct fit on a 90-93. Direct fit on a 94-97 if you plan on eliminating the stock cockpit brace.

Window Regulators: Do not fit.


Engine / Drivetrain

1999-2000 (NB1) BP4W Engine: 

1990-1993: Make sure the engine you get includes the motor mount brackets, intake manifold, small coolant hoses, pulleys, fuel rail, and injectors. You will need the swap kit from Flyin Miata to adapt a couple of the stock 90-93 components. The main 90-93 components to be reused will be the throttle body, coilpack, cam sensor, injector harness, ecu temperature sensor, cluster temperature sensor, p/s pump, oil pressure sending unit, and ac compressor. Upper and lower NB radiator hoses will be needed (we recommend new). For best results in adapting an NB engine into a 90-93 we recommend using the 94-97 exhaust manifold and downpipe (or 94-97 style aftermarket header), 94-97 alternator, and 94-97 fuel pressure regulator. With these parts you'll be able to run the stock 90-93 ECU. There will be some other minor changes to wiring and to the fuel system, which would take up too much room on this guide to fully document. 

1994-1997: Make sure the engine you get includes the motor mount brackets, intake manifold, small coolant hoses, pulleys, fuel rail, and injectors. The main 94-97 components to be reused will be the throttle body, coilpack, cam sensor, injector harness, exhaust manifold, alternator, fuel pressure regulator, ecu temperature sensor, cluster temperature sensor, p/s pump, oil pressure sending unit, and ac compressor. Upper and lower NB radiator hoses will be needed (we recommend new), as well as an NB throttle cable (for proper length). With these parts you'll be able to run the stock 94-97 ECU. There will be some other minor changes to wiring and to the fuel system, which would take up too much room on this guide to fully document. 


2001-2005 (NB2) VVT Engine:

1990-1993: Make sure the engine you get includes the motor mount brackets, intake manifold, small coolant hoses, pulleys, all VVT components, coils with pigtails, fuel rail, and injectors. You will need the swap kit from Flyin Miata to adapt a couple of the stock 90-93 components. The main 90-93 components to be reused will be the throttle body, cam sensor, injector harness, ecu temperature sensor, cluster temperature sensor, p/s pump, oil pressure sending unit, and ac compressor. Upper and lower NB radiator hoses will be needed (we recommend new). For best results in adapting an NB engine into a 90-93 we recommend using the 94-97 exhaust manifold and downpipe (or 94-97 style aftermarket header), 94-97 alternator, and 94-97 fuel pressure regulator. We also prefer to use the 99-00 fuel rail instead of the 01-05 one. An aftermarket ECU capable of controlling the VVT is highly recommended over trying to use the stock 90-93 ECU in this case. There will be some other minor changes to wiring and to the fuel system, which would take up too much room on this guide to fully document.

1994-1997: Make sure the engine you get includes the motor mount brackets, intake manifold, small coolant hoses, pulleys, all VVT components, coils with pigtails, fuel rail, and injectors. The main 94-97 components to be reused will be the throttle body, cam sensor, injector harness, exhaust manifold, alternator, fuel pressure regulator, ecu temperature sensor, cluster temperature sensor, oil pressure sending unit, p/s pump, and ac compressor. Upper and lower NB radiator hoses will be needed (we recommend new), as well as an NB throttle cable (for proper length). We prefer to use the 99-00 fuel rail instead of the 01-05 one. You can run the engine with the 94-97 ECU and run the VVT separately with a VVT Tuner, or use an aftermarket ECU to run everything (recommended). There will be some other minor changes to wiring and to the fuel system, which would take up too much room on this guide to fully document.

Engine Shortblock (with complete rotating assembly): Compatible with a 94-97 1.8. Fairly straightforward because you'll be reusing all of your 94-97 parts on the exterior of the block. Not compatible with 90-93 1.6.

Engine Block (Bare): Compatible with a 94-97 1.8. Fairly straightforward because you'll be reusing all of your 94-97 parts on the exterior of the block. Not compatible with 90-93 1.6.

1999-2000 BP4W Cylinder Head: Compatible with 94-97, following almost all of the same notes from the engine install above. Not compatible with 90-93 1.6.

2001-2005 VVT Cylinder Head: Compatible with 94-97, following almost all of the same notes from the engine install above. Not compatible with 90-93 1.6. 

1999-2000 Valve Cover: Fits a 94-97 1.8 engine. Only recommended if you plan on using a 99-00 intake cam gear and 99-00 cam sensor (only applicable in cases where an aftermarket ECU is used). Can be used otherwise, but you'll be left with a hole where the sensor would be, or a sensor that is not being utilized.

2001-2005 Valve Cover: Does not fit unless you're using a VVT engine or head (94-97).

Crankshaft: Direct fit on a 94-97 1.8 engine. Not compatible with 90-93 1.6 engine.

Rods: Direct fit on a 94-97 1.8 engine. Not compatible with 90-93 1.6 engine.

Pistons: Direct fit on a 94-97 1.8 engine. 99-00 pistons will have a 9.5:1 compression ratio and 01-05 pistons will have a 10.0:1 compression ratio. Not compatible with 90-93 1.6 engine. 

Oil Pan: 99-00 oil pan is a direct fit on a 94-97 1.8 engine. 01-05 oil pan fits as long as factory 01-05 Main Bearing Support Plate (MBSP) is also used. The MBSP is a direct replacement for the stock 1.8 oil pan baffle. Make sure to get the 8 bolts that attach the MBSP to the block, also make sure to use new front and rear half moon oil pan seals for an 01-05 Miata. Not compatible with 90-93 1.6 engine.

Oil Pump: Compatible with 94-97 1.8 engine. Not compatible with 90-93 1.6 engine.

Crank Pulley: Compatible with 96-97 1.8 engines that came with a factory crank sensor and timing plate. Not recommended for 94-95 1.8 engines that did not come with the crank sensor / timing plate. Not compatible with 90-93 1.6 engine.

Crank Pulley Boss: Direct fit for a 94-97 1.8 engine. Also compatible with the mid 91 to 93 "longnose" 1.6 engine, but not compatible with the 90 to early 91 "shortnose" 1.6 engine. 

Crank Gear (Timing Gear): Direct fit for a 94-97 1.8 engine. Also compatible with the 91.5-93 "longnose" 1.6 engine, but not compatible with the 90-early 91 "shortnose" 1.6 engine. 

Water Pump Pulley: Direct fit for 94-97 1.8 engine. Not compatible with 90-93 1.6 engine. 

Intake Cam Gear: 99-00 intake cam gear is compatible on any NA engine (will just have additional marks on it for the NB cam sensor that will not be used). 01-05 VVT intake cam gear / actuator will not fit any NA engine.

Exhaust Cam Gear: 99-05 exhaust cam gear is directly compatible with any NA engine. 

Camshafts: NB cams are "solid lifter" style while the NA ones use hydraulic lifters, so they are not compatible.

Camshaft Sensor: Not compatible

Crank Sensor: Not compatible

Thermostat Housing: NB thermostat housing is a direct fit for a 94-97 1.8 engine. Will also fit a 90-93 1.6 engine if you plan on eliminating the cooling fan sensor/switch.

Starter: Fits any manual transmission NA, but will only use two of the mounting bolts instead of three. We've used this starter in track cars and modified street cars with no adverse effects.

MAF: Not compatible

ECU: Not compatible

Radiator: Not compatible (different mounting styles)

Engine Cooling Fan: Not compatible

AC Fan: Not compatible

AC Compressor: 99-00 compressor is compatible with 94-97 Miatas, reuse wiring and lines from your 94-97 compressor.

Alternator: Not compatible (NA alternators are internally regulated while NB alternators are regulated by the ECU).

1999-2000 Ignition Coilpack: Compatible with 96-97 Miatas only.

2001-2005 Ignition Coils: Not compatible.

Intake Manifold: Not compatible, different bolt pattern on cylinder head.

Throttle Body: Bolts onto 94-97 1.8 intake manifold, but is electrically different.

Injectors: Direct fit. The resulting change in injector flow rate will require supporting modifications for better performance.

Fuel Rail: Not compatible without other modifications.

Fuel Pump Assembly: Not compatible

Fuel Tank: Not compatible

Exhaust Manifold: Both the 99-00 and 01-05 bolts onto 94-97 1.8 cylinder head, but will not work with NA EGR tube or the rest of the exhaust system. Not recommended.

EGR Tube: Not compatible

Exhaust Downpipe: Not compatible without modifications, not recommended.

Exhaust Midpipe: Not compatible without modifications, not recommended.

Exhaust Muffler: Not compatible without modifications, not recommended.


Transmission / Differential

5 Speed or 6 Speed Manual Transmission: Compatible with any manual transmission NA Miata. You will need the corresponding NB shifter from the transmission you're buying. The NB electronic speedo sensor is replaced with your NA speedo gear and cable. 

Automatic Transmission: Not Compatible

Manual Shifter: Not compatible without modifications. Not recommended.

Automatic Shifter: Not Compatible

Flywheel: Direct fit on a 94-97 1.8. Also fits a 90-93 1.6 if used in conjunction with 94-05 clutch pressure plate and disc.

Clutch Pressure Plate and Disc: Direct fit on a 94-97 1.8. Also fits a 90-93 1.6 if used in conjunction with 94-05 flywheel.

Manual Powerplant Frame (PPF): Direct Fit

Automatic Powerplant Frame: Not Compatible

Manual Driveshaft: Direct fit for 94-97 1.8. Fits a 90-93 1.6 if using a newer 94-05 differential and axles.

Automatic Driveshaft: Not Compatible

Differential: Direct fit for 94-97 1.8. Fits a 90-93 1.6 if using newer 94-05 driveshaft and axles. Detailed info can be found here: Miata Torsen Buyers Guide

Differential Housing: Direct fit for 94-97. Does not fit a 90-93 1.6 differential.

Differential Ring and Pinion: NB's use the same style 7" ring and pinion as a 94-97 1.8, so these are directly compatible with the 94-97 differentials. 90-93 1.6 uses a 6" ring and pinion, so the newer ones are not compatible.

Axles: All non-Mazdaspeed NB axles are a direct fit for a 94-97 Miata. They also fit a 90-93 if used in conjunction with a newer 94-05 differential and driveshaft.


Suspension / Brakes / Wheels

Front Subframe: Not a direct fit. The mounting holes line up, but the rearmost ones on the NB subframe would go unused. The steering rack mounts differently so you would also need the NB steering rack and associated lines and power steering pump. If you plan on going this route it's best to use the entire NB front suspension, including all arms. 

Rear Subframe: Fits an NA and has all the same mounting points for the differential and the suspension pieces, but has different mounting points for the exhaust.

Steering Rack: Not compatible with the NA subframe.

Power Steering Pump: Not directly compatible with the NA power steering lines.

Strut Tower Bar: Bolt-on fit for an NA Miata. May need to adjust routing of stock NA cruise control cable for proper fit.

Sway Bars: Fit on an NA with use of aftermarket sway bar end links. Make sure you get the corresponding NB sway bar mounting brackets and bushings from the sway bars you get.

Front Lower Control Arms: Fit on an NA with the use of aftermarket sway bar end links. Be mindful of geometry changes in suspension due to slight differences in design.

Front Upper Control Arms: The ball joint size / taper where it fits into the spindle is different than an NA, so the use of NB front spindles will also be necessary. Be mindful of geometry changes in suspension due to slight differences in design.

Rear Lower Control Arms: Fit on an NA with the use of aftermarket sway bar end links. 

Rear Upper Control Arms: Direct fit, same part.

Front Spindles: The opening for the upper control arm ball joint is of a different size / taper than the NA spindle, so the use of NB front upper control arms will also be necessary. Be mindful of geometry changes in suspension due to slight differences in design.

Rear Spindles: Fit on an NA, but will give the car a 5mm wider track on each side, so make sure that does not cause interference issues with your wheels and tires. Make sure you install these in pairs. Be mindful of different sizes of brake dust shields available on NB's. 

NB Top Hats: Popular upgrade for an NA. Requires use of slimmer aftermarket bushings or modification to the stock NB top hat bushings for proper fit on an NA style shock.

Shocks: Not compatible with NA springs.

Springs: Not compatible with NA shocks.

Shock / Spring Assemblies: As a full assembly these will directly bolt onto an NA, but will raise the ride height of the car. 

1999-2000 (all), 2001-2002 (base model) front brake calipers: Direct fit on a 94-97. Will also fit the front of a 90-93 with use of the corresponding caliper brackets, pads and rotors.

1999-2000 (all), 2001-2002 (base model) rear brake calipers: Direct fit on any NA, same parts.

1999-2000 (all), 2001-2002 (base model) brake caliper brackets: Direct fit on a 94-97, same parts. Popular upgrade for 90-93 Miatas with use of the corresponding larger brake rotors and pads. When upgrading your 90-93 with the bigger brakes your dust shields will have to be modified to accommodate the larger rotors. 

1999-2000 (all), 2001-2002 (base model) brake rotors: Direct fit on a 94-97, same parts. Fits 90-93 Miatas with use of the corresponding caliper brackets and pads. When upgrading your 90-93 with the bigger brakes your dust shields will have to be modified to accommodate the larger rotors. 

"Sport Brakes": You'll need the calipers, caliper brackets, rotors, pads and front brake lines. When upgrading your NA with these bigger brakes you'll have to modify your dust shields to accommodate the larger rotors.

Wheels: Direct fit onto any NA. 

Spare Tire / Wheel: Direct fit on an NA. NB's that came equipped with the larger "sport brakes" came with a 15" spare tire that will also fit NA's.


Mazdaspeed Miata / MSM (2004-2005)

Seats:

1990-1993: Using the NB seat rail they bolt on directly to the car. However, the 90-93 seatbelt does not work correctly with the NB seat-mounted buckles, so those can be removed from your NB seats and you would retain your 90-93 body-mounted buckles. If you'd like to ditch the 90-93 buckles and use the NB ones, you would need to install a set of 1994-2000 seatbelts.

1994-1997 : Direct it with use of NB seat rails. 

Door Panels: Only recommended if being used in conjunction with an NB dash. These door panels be a very tedious task to get them to fit nicely. 

Instrument Cluster: Not easily compatible, requires extensive wiring modifications, we don't personally recommend it.

Full Engine: The complete engine with turbo components will physically fit an NA Miata, but the wiring, ecu, intake plumbing and exhaust will not be fully compatible. We strongly suggest an aftermarket ECU and lots of planning ahead when swapping this engine into another year Miata. 

Turbo Exhaust Manifold / Turbo: Bolts onto 94-97 1.8 engine, but will require many custom and / or aftermarket components for a successful implementation.

Transmission: Compatible with any manual transmission NA Miata. You will need the corresponding shifter from the Mazdaspeed transmission. The electronic speedo sensor is replaced with your NA speedo gear and cable. 

Oil Cap: Direct Fit

Oil Pan: Mazdaspeed oil pan fits a 94-97 1.8 as long as factory MSM Main Bearing Support Plate (MBSP) is also used. The MBSP is a direct replacement for the stock 1.8 oil pan baffle. Make sure to get the 8 bolts that attach the MBSP to the block, also make sure to use new front and rear half moon oil pan seals for an 01-05 Miata. Not compatible with 90-93 1.6 engine.

ECU: Not Compatible

Clutch Pressure Plate and Disc: Direct fit on a 94-97 1.8. Also fits a 90-93 1.6 if used in conjunction with 94-05 flywheel.

Flywheel: Direct fit on a 94-97 1.8. Also fits a 90-93 1.6 if used in conjunction with 94-05 clutch pressure plate and disc.

Mazdaspeed Miata Torsen Differential: Fits 94-97 with use of Mazdaspeed axles. Will also fit a 90-93 with the use of the Mazdaspeed axles and driveshaft.

Axles: Fits 94-97 with use of Mazdaspeed differential. Will also fit a 90-93 with the use of the Mazdaspeed differential and driveshaft.

Driveshaft: Direct fit for manual 94-97 1.8. Fits a 90-93 1.6 if using a newer 94-05 differential and axles.

Strut Tower Bar: Direct fit onto any NA Miata. May need to adjust routing of stock NA cruise control cable for proper fit. Unless you plan on using the extra plumbing that is integrated into the MSM bar, we recommend using a standard NB2 strut tower bar instead.

Sway Bars: Fit on an NA with use of aftermarket sway bar end links. Make sure you get the corresponding MSM sway bar mounting brackets and bushings.

Shock / Spring Assemblies: As a full assembly these will directly bolt onto an NA, but will raise the ride height of the car. 

Wheels: Direct fit onto any NA.

Trunk Spoiler: Does not fit an NA trunklid correctly.

Painted Rearview Mirror: Direct Fit on a 1996-1997 with windshield mounted rearview mirror. 


Thank you for reading, we hope you've found this guide helpful. Feel free to share this article via the quick links provided below, or via the URL.

Click here to check our our large selection of Used Miata Parts.

To see which parts from a 1994-1997 (NA8) Miata fit a 1990-1993 (NA6), see our NA 1.8 to NA 1.6 Compatibility Guide


*Disclaimer* 

We wrote this guide as a reference for parts that we have hands-on experience with either installing, or physically checking fitment on different year cars. Please use your best judgement or seek the advice of a certified mechanic if you have any questions or doubts before purchasing or installing parts from a Miata that is a different year or model than yours. We are not responsible for any financial loss, injury or death arising from the improper installation or modification of your car and/or parts.