1990-1993 Mazda Miata 1.6L DOHC Engine & 5 Speed Manual Transmission JDM B6

Stock number MAZ-EN-NA-003

In stock, ships from Grand Rapids

Stock number	MAZ-EN-NA-003
Make	Mazda
Fits model years	1990-1993
Category	Engines, Mazda Engines
Shipping weight	280 lbs (estimated)
Condition	Used, imported from Japan, tested before dispatch
Warranty	90 days from delivery

Prefer to write it down? Call +1 503-551-4892 or email Sales@hanedaautos.com.

This ships by freight. It travels bolted to a pallet, and the price depends on your ZIP, whether the address is residential and whether you need a liftgate. Order online and we will send the freight price before anything leaves the floor, or get the price up front below.

Checking fitment? Call +1 503-551-4892 or email Sales@hanedaautos.com with your VIN and we will confirm it against this unit.

About this unit

Feature	Details
Engine Code	B6 (RS)
Displacement	1.6 Liters (1597cc)
Transmission	5-Speed Manual (RWD)
Valvetrain	DOHC 16-Valve
Bore/Stroke	$78.0 text{ mm} times 83.6 text{ mm}$
Source	Genuine JDM Import (Japan)

Vehicle Fitment

This engine and transmission package is a direct fit for:

Mazda MX-5 Miata (NA Chassis): 1990, 1991, 1992, 1993
Eunos Roadster (JDM): 1989–1993
Note: Can be retrofitted into 1994–1997 Miata chassis with minor modifications (1.8L to 1.6L downsize).

Installation & JDM Swap Notes

To ensure a “turn-key” experience, please note the following technical requirements:

Long-Nose vs. Short-Nose Crank: These JDM units are typically the preferred “long-nose” crank versions (1991.5+), which eliminated the crank wobble issues found in early 1990 models.
Electronics: Swap your original US-spec Air Flow Meter (AFM) and Crank Angle Sensor (CAS) to ensure 100% compatibility with your factory wiring harness.
Maintenance: We strongly recommend replacing the Rear Main Seal, Clutch, and Timing Belt while the engine is out of the car for maximum longevity.
Transmission: Includes the 5-speed manual gearbox. Inspect shifter bushings and change gear oil (75W-90) before use.

What is included

You receive exactly what is pictured. Engines are supplied as a long block assembly with the components visible in the photos. Accessories such as the alternator, starter, intake manifold or sensors are included only where you can see them on the unit, so check the photographs before ordering and ask us if anything is unclear.

Before you order

Confirm the engine code against your own vehicle, not just the model year.
Japanese market units can differ from the US version in intake, loom and sensors.
Replace the timing components, water pump and seals while the unit is out. It is cheap insurance on an engine this age.
Keep your original accessories until the swap is finished and running.