Cheap BMW M8 Differential

The BMW M8 (F91/F92/F93 generation) ran from 2019 onwards, so both a 2020 and a 2022 car sit within the same generation — the key fitment factors are the engine code (S63M in the M8) and whether both cars share the same gearbox type, so always cross-reference the engine code from your V5 before buying. Minor ancillary or mounting changes can occur mid-production even within the same generation, so confirm the exact application with the breaker against your registration number. Never assume fitment is guaranteed on year alone.

Almost certainly not — the BMW M8 uses a high-output S63M twin-turbo V8 engine and a bespoke M-tuned drivetrain, whereas the standard 8 Series (840i, 840d, 850i) uses entirely different engines and non-M driveline components. The differential is matched to the engine output and gearbox, so parts from a non-M 8 Series are unlikely to be compatible. Always supply the breaker with both the engine code and registration so they can confirm against the correct application.

Body style does not affect differential fitment — the mechanical driveline components follow the engine code and gearbox type, not whether the car is a coupe, convertible, or Gran Coupe. What matters is that the engine code (S63M) and gearbox specification match between the donor and recipient vehicle. Confirm the full spec with the breaker against your registration to be sure.

The M8 Competition is a higher-output tune of the same S63M engine rather than a fundamentally different drivetrain, but the output difference may mean the differential specification varies between standard M8 and M8 Competition variants. Trim level alone does not affect fitment in the way that engine code and gearbox type do, so supply the breaker with your exact engine code and registration rather than relying on the Competition badge. Cosmetically the cars differ in badging and minor trim details, but mechanically confirm the differential specification matches before purchasing.

The F91/F92/F93 BMW M8 generation launched in 2019 and received a mid-cycle update in 2022, which brought styling and equipment changes; whether the driveline components including the differential were revised at that point is something you should confirm with the breaker against your registration rather than assume. If both donor and recipient cars are pre-2022, the risk of running into a facelift-related change is lower, but mid-production ancillary or mounting changes can occur at any point. Always provide your registration and engine code to the breaker so they can verify the correct unit for your exact build.

The most important detail is your engine code, which you can find on your V5 registration document or via a VIN check — for the M8 this should be the S63M, but confirm yours. You should also tell the breaker your gearbox type and your full registration number so they can check the exact specification of your car against the donor vehicle. Whether the differential needs ECU pairing or coding to the vehicle is something to raise directly with the breaker, as this can affect how straightforward the swap is.