Used Mercedes-Benz E-Class Dual Mass Flywheel

The W211 (2002–2009) and W212 (2009–2016) are different generations with different engine families, so a direct swap across that boundary is unlikely even if the engine displacement sounds the same — for example, the W211's OM646 and the W212's OM651 are entirely different units with different flywheel bolt patterns and dimensions. Engine code is what governs fitment here, not the generation badge, so match the code on your V5 or a VIN check to the donor car's code. Confirm compatibility with the breaker before buying.

The W212 was facelifted in 2013, but the E220 CDI retained the OM651 engine throughout the pre-facelift and post-facelift W212 run, so in many cases the flywheel is the same unit — engine code is the deciding factor, not the facelift year. That said, ancillary and mounting changes can occur mid-production even within the same engine code, so confirm the exact engine code on your V5 against the donor vehicle's code with the breaker before purchasing.

Dual mass flywheels are fitted to manual-gearbox variants of the E-Class; automatics use a torque converter instead and do not have a flywheel in the traditional sense, so if your E-Class has an automatic gearbox you are not looking for a dual mass flywheel. On manual-transmission diesel and petrol E-Class models the dual mass flywheel is a genuine part, and it is the engine code combined with the gearbox type that determines which unit you need. If you are unsure whether your car has a manual or automatic, check the V5 or ask a breaker to look up your registration.

Trim level makes no difference to flywheel fitment on the E-Class — SE, Sport, AMG Line, Avantgarde, and Elegance are cosmetic and equipment packages that do not alter the drivetrain components. What matters is the engine code, gearbox type, and year, all of which are shared across trim grades running the same powertrain. Supply your engine code and registration to the breaker and ignore the trim name entirely when sourcing this part.

The W213 (2016 onwards) introduced updated engine variants and different specifications compared to the W212, so cross-generation fitment is not straightforward even where engine displacements appear similar. Identify your exact engine code from the V5 or a VIN check and ask the breaker to match it against the donor car's code — that is the only reliable way to confirm whether an older-generation flywheel is compatible. Do not assume fitment based on the litre size or badge alone.

The single most useful piece of information is the engine code, which you will find on your V5 registration document or via a VIN check — on E-Class diesels this is typically a code such as OM651, OM646, or OM648 depending on the generation and variant. You should also confirm whether your car has a manual gearbox, as automatics do not use a dual mass flywheel. Give the breaker your engine code, registration, and gearbox type and they can cross-reference their stock accurately.