Complete M57 or N57 transplants into your 4×4 or off-roader. We source the engine, fabricate all mounts and adapters, handle the ECU wiring, cooling, exhaust routing, and certify the finished vehicle for NZ roads. Every conversion is bespoke — because it is.

Getting the BMW ECU to communicate cleanly in a non-BMW chassis is where many shops fall short. We handle full wiring harness adaptation, CAN bus integration, and custom tuning so the engine runs exactly as it should — no warning lights, no compromises.

The M57 and N57 pair excellently with BMW ZF automatics or manual gearboxes. We handle adaptor plates, transfer case integration, and driveshaft work to suit your vehicle and use case — daily driving, towing, or serious off-road.

All conversions are completed with LVVTA certification in mind. We work within the NZ low-volume vehicle certification framework so your build is legal, WOF-ready, and properly documented. We can advise on what’s needed for your specific vehicle.

Custom wiring harnesses built from scratch or adapted from BMW donor looms. Clean, labelled, and built to last. We don’t splice and tape — every harness is purpose-built for the application.

Running an M57 or N57 conversion someone else built? We can diagnose, repair, and tune existing BMW diesel swaps. Bring us your gremlins — we know these engines inside out.