Wide-block M57 compatibility
Supports all wide-block M57 variants, single or twin turbo: 304D2, 306D3, 306D4 and 306D5. All twin-turbo installations require a P38 steering-box conversion to allow engine fitment and avoid fouling the steering box.
Check the remaining chassis, gearbox and kit-specific requirements before ordering.
Compatible wide-block single- and twin-turbo M57 engines are supported. Twin-turbo installations require a P38 steering-box conversion for engine fitment. The specified wide-block and MT82 requirements still apply.
BMW M57N / M57N2 Wide Block to MT82 Adapter Kit – Defender Puma
Fitting a BMW M57 to your Puma Defender and keeping the six-speed manual? This gearbox adapter kit gives you the foundation for your manual M57 conversion. Bolt-in engine mounts for your TDCi Puma are an optional add-on; select them in the product options if required.
Designed for compatible M57N and M57N2 wide block single- or twin-turbo engines, the kit connects the BMW engine to your Defender’s MT82 six-speed manual gearbox.
STANDARD HD CLUTCH PARTS — EASIER SERVICING
The kit is designed around the Land Rover/Ford single-mass flywheel arrangement, using readily available Defender TDCi clutch components and factory clutch hydraulics. No custom clutch plate or specialist hydraulic setup required!
That means straightforward replacement parts when it’s time for servicing, without being tied to a one-off clutch assembly. It also removes the need to purchase an expensive replacement BMW dual-mass flywheel for your conversion.
NO CUTTING OF THE GEARBOX CASING
The adapter fits without cutting or modifying the MT82 gearbox casing, simplifying installation and avoiding the risk of mistakes when altering the housing.
Keeping the casing intact also helps preserve its suitability for a future exchange gearbox — a modified housing may not be accepted as an exchange core.
WHAT’S INCLUDED
- CNC-machined gearbox adapter plate, dimensionally checked using coordinate measuring equipment (CMM).
- CNC-machined crankshaft-to-flywheel adapter, also CMM checked.
- Alignment dowels for accurate positioning.
- Additional adapter hardware and fasteners.
- Remanufactured Bosch or Visteon starter motor.
- Assembly instructions with an itemised, numbered parts list.
OPTIONAL BOLT-IN ENGINE MOUNTS
Add bolt-in engine mounts for your TDCi Puma Defender for $585 extra. Engine mounts are supplied only when the engine-mount option is selected.
OPTIONAL LOF CLUTCH & FLYWHEEL
Add a LOF clutch and flywheel for $1,830 extra — a convenient option if you’re replacing your clutch and flywheel as part of the conversion.
| Package | Price AUD |
|---|---|
| Adapter kit only — no engine mounts or clutch | $4,400 |
| Adapter kit + Puma bolt-in engine mounts | $4,985 |
| Adapter kit + LOF clutch & flywheel — no engine mounts | $6,230 |
| Adapter kit + Puma bolt-in engine mounts + LOF clutch & flywheel | $6,815 |
FITMENT & INSTALLATION
- For Defender 2.4 / 2.2 TDCi Puma models fitted with the MT82 six-speed manual gearbox.
- Suits compatible BMW M57N / M57N2 wide block single- or twin-turbo engines. Check your engine’s block configuration before ordering, or email us to confirm.
- Aluminium-block M57N2 engines require one M12 Helicoil installed in the engine block. Helicoil not included.
- Uses the Land Rover/Ford single-mass flywheel arrangement.
- Engine mounts are supplied only when the engine-mount option is selected.
- Clutch and flywheel are supplied only when the LOF option is selected.
A NOTE ON DRIVETRAIN NOISE
A single-mass flywheel can transmit more drivetrain noise than a dual-mass setup. Almost everyone reports no additional neutral-idle gearbox noise during testing with a healthy MT82 running the correct oil.
Some additional noise can occur during low-speed manoeuvring, particularly with a higher-mileage transfer case. Depending on the condition of your drivetrain, additional noise may also be noticeable at higher engine speeds under heavy load...but then again, not in every case either!!!
The base kit covers the gearbox adapter components. Engine mounts and the LOF clutch and flywheel are optional extras, supplied only when selected. Additional parts and work are required to complete an M57 conversion.
Unsure which M57 you’ve got or which engine you need? Get in touch before ordering and we’ll help confirm the right kit for your build.