Mercedes-Benz GLB Dual Mass Flywheel Replacement Parts

Yes, the GLB does use a dual mass flywheel (DMF), but only on manual gearbox variants — the DMF sits between the engine and the clutch and is specific to manual transmission cars. GLB models fitted with the 7G-DCT dual-clutch automatic or 8G-DCT automatic gearbox do not use a traditional DMF in the same way, so if your car has an automatic gearbox you are unlikely to need one. Check your gearbox type before sourcing a replacement.

The engine code is the single most important detail for matching a DMF — more so than the year or badge on the car. The GLB has been offered with several four-cylinder petrol and diesel units, each with its own engine code (found on your V5C or via a VIN check), and the DMF is matched to that specific engine rather than the model name or trim level. Give your engine code to the breaker alongside your registration and they can confirm the correct part.

The GLB (X247) launched in 2019 and remains in its first generation, with a facelift introduced for the 2024 model year, so all cars share the same basic platform. Within that span, ancillary components and mounting arrangements can change mid-production even on the same engine code, so year still matters when cross-referencing a used flywheel. Name your exact model year and engine code to the breaker and ask them to confirm the part matches your specific vehicle rather than assuming any GLB flywheel will do.

The GLB facelift arrived for the 2024 model year and while the underlying X247 platform carries over, there may be changes to drivetrain ancillaries across that boundary that affect fitment. Whether a pre-facelift DMF crosses over to a post-facelift car — or vice versa — is something you should confirm with the breaker against your registration and engine code rather than assume. Name the boundary clearly when you contact them and ask them to verify part numbers before committing.

Trim level — whether SE, Sport, AMG Line, or AMG Line Premium — makes no difference to which DMF you need, because the flywheel follows the engine and gearbox specification, not the trim. An AMG Line badge does not mean a different engine code in most cases; what matters is whether both cars share the same engine code and gearbox type. Confirm the engine code on both vehicles and let the breaker do the final check.

It is strongly recommended practice to replace the clutch kit — friction plate, pressure plate, and release bearing — at the same time as the DMF, because the parts wear together and labour costs overlap significantly on this type of job. Sourcing a matched used DMF and clutch kit from the same donor vehicle via a breaker can reduce cost and gives you components that have worn in together. Discuss this with your fitting garage before you order, as some workshops will insist on new clutch components even when fitting a used flywheel.