Mercedes-Benz G-Class Flywheel Replacement Parts

The G-Class runs across a very long single generation that spans from 1979 through to the W463 generation launched in 1990 and running to 2018, so both years sit within the W463 body shell, but fitment of a flywheel is governed almost entirely by engine code and gearbox type rather than year alone. If both vehicles share the same engine code and the same gearbox type (manual or automatic), the flywheel is far more likely to be compatible, but mid-production ancillary and mounting changes can occur across such a long production run, so confirm the match against your exact registration with the breaker before buying.

All internal combustion engine variants of the G-Class have a flywheel of some kind, but the type differs critically by gearbox: manual gearbox vehicles use a traditional solid flywheel, while automatic gearbox vehicles use a flexplate (also called a driveplate) that serves the same function connecting the engine to the torque converter. When searching, be clear with the breaker whether your G-Class is manual or automatic, as the two parts are not interchangeable at all.

Yes, engine code matters above everything else for a flywheel — the G350d and G300d use different diesel engines with different crankshaft flanges, bolt patterns, and balancing, so a flywheel from one will not reliably fit the other even though both are diesel G-Class models. Always supply your exact engine code from your V5 or a VIN check rather than relying on the badge or fuel type alone, as Mercedes used several different diesel and petrol engine families across the G-Class range. Give the breaker your engine code and confirm compatibility before purchasing.

Trim level and badge in themselves make no difference to flywheel fitment, but the G63 AMG uses a completely different AMG engine (the M157 or M176 biturbo V8 depending on generation) compared to standard G-Class variants, so the flywheel or flexplate will be different — this is because of the engine, not the AMG trim designation. A standard G350d and a G63 AMG therefore need entirely different parts, so always lead with the engine code rather than the trim name when asking a breaker for a quote.

The W463 G-Class received styling and equipment updates over the years but the flywheel is a mechanical engine component, so cosmetic or trim-level facelifts do not change which flywheel you need. What matters is whether the engine code changed at or around that period, and for some engine families Mercedes did introduce revised units during the W463's long run. Check your exact engine code on your V5 or via a VIN check and supply it to the breaker, who can confirm whether your specific engine variant matches the unit they have in stock.

The single most useful detail is your engine code, which you can find on your V5 registration document or by running a VIN check — this tells the breaker exactly which engine family and variant you have, which is what determines flywheel compatibility. You should also confirm whether your G-Class has a manual or automatic gearbox, as manual vehicles need a solid flywheel while automatics use a flexplate, and these are completely different parts. Having your full VIN to hand is also helpful, as the breaker can cross-reference it against the unit they have available to give you the most accurate confirmation.