Cheap BMW M8 Flywheel

It depends on the gearbox fitted to your car. All BMW M8s use a 4.4-litre twin-turbocharged V8 (engine code S63), but models with the standard 8-speed M Steptronic automatic gearbox use a torque converter rather than a clutch, meaning there is no conventional flywheel — a flexplate is fitted instead. Only an M8 specified with a manual gearbox would carry a traditional flywheel, and BMW did not offer a manual gearbox option on the F91/F92/F93 M8 generation, so if your M8 is automatic, you are almost certainly looking for a flexplate rather than a flywheel.

The BMW M8 (F91 Coupe, F92 Convertible, F93 Gran Coupe) was produced from 2019 onwards as a single generation with no fundamental engine or gearbox architecture change, so flexplates from within this generation are generally expected to share the same specification. That said, there can be ancillary or mounting changes mid-production that are not always publicly documented, so you should confirm the part against your specific registration and engine code with the breaker before buying. Supplying your engine code — found on your V5 or via a VIN check — gives the breaker the best chance of matching the correct part.

For the flexplate specifically, trim level makes no difference to fitment — the S63 engine and 8-speed M Steptronic gearbox combination is shared across the M8, M8 Competition, and M8 Competition xDrive variants. The xDrive models add a front differential and transfer case but the flexplate sits between the engine and gearbox and is unaffected by drivetrain layout. You can therefore disregard whether the donor car was a Competition or standard M8 when sourcing this part.

The M5 (F90) also uses the S63 engine paired with the same 8-speed M Steptronic gearbox, which makes the flexplate a plausible cross-model candidate on paper. However, whether the exact flexplate specification is identical across the two models is something you should confirm with the breaker against both registrations, as mounting details can vary even between cars sharing the same powertrain family. Providing your engine code alongside the M5 donor's engine code gives the breaker everything needed to make a proper comparison.

Because the F91/F92/F93 M8 was only ever offered with an automatic gearbox in the UK, it does not use a dual-mass flywheel — that is a component associated with manual-gearbox applications. Your car will have a flexplate (sometimes called a flex plate or drive plate) bolted to the rear of the crankshaft in place of a flywheel, and this is the part you should be searching for. If a garage has quoted you for a dual-mass flywheel on an automatic M8, it is worth querying whether there has been a mix-up with the job description.