Second Hand Peugeot 508 Flywheel

A flywheel only exists on 508s fitted with a manual gearbox — automatic versions use a torque converter and flexplate instead, so if your 508 has an automatic gearbox there is no conventional flywheel to replace. Manual-gearbox 508s were available across both generations, so the part does exist on this model but only on those specific drivetrain configurations. If you are unsure which gearbox type you have, check your V5 or run a VIN check before ordering.

The first-generation 508 ran from 2011 to 2018 and the second generation launched in 2018, and these two generations used significantly different engine families and bell-housing designs, so a flywheel is very unlikely to cross that boundary. Fitment follows the engine code above all else, and the codes used in the Mk1 typically differ from those in the Mk2 even where the displacement and fuel type look similar on paper. Share your exact engine code with the breaker — found on your V5 or via a VIN check — and they can confirm whether any overlap genuinely exists.

Trim level makes no difference to flywheel fitment — Active, Allure, and GT are all badging and equipment grades, not mechanical specifications, and the flywheel is determined entirely by the engine code and gearbox type. A flywheel from a lower-trim 508 with the same engine code and a manual gearbox will be the same unit as one from a GT. Just make sure the engine codes match and both cars have manual gearboxes.

The first-generation 508 received a facelift in 2014, which primarily brought cosmetic and interior updates rather than fundamental engine architecture changes. Whether the flywheel changed at the facelift boundary is something to confirm with the breaker against your registration and engine code, as ancillary and mounting specifications can shift mid-production without a formal model-year marker. Give the breaker your engine code and registration and they can cross-reference the part number directly.

Yes, fuel type matters significantly — diesel engines produce different torque characteristics and typically use a heavier flywheel or a dual-mass flywheel (DMF) sized and rated differently from a petrol equivalent. Fitting a petrol flywheel to a diesel engine or vice versa is not correct practice and could cause vibration, noise, or premature failure. Always match the replacement flywheel to your specific engine code rather than just the fuel type label.

The most useful details are your engine code (stamped on the engine block and listed on your V5 or via a VIN check), confirmation that your car has a manual gearbox, your registration number, and the model year. Engine code is the single most important piece of information because flywheels follow the engine specification, not the body style, trim, or colour of the donor vehicle. The more precisely you can supply these details, the more accurately a breaker can confirm a match before you commit to buying.