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Used engine mounts vary between vehicles - and whether you call it used, second hand or a replacement, matching the right one matters. These are the details breakers need to match the right part to your car - our request form asks them so you only hear from suppliers with the correct part:
Yes, generation matters significantly – the ML exists in three generations: the W163 (1997–2005), the W164 (2005–2011), and the W166 (2011–2019), and engine mounts are not interchangeable across these boundaries as the engine bay dimensions, subframe design, and engine fitment differ substantially between them. Within a generation, the engine code is the single most reliable guide to whether a specific mount will cross over, so always match on that first. If a breaker is quoting you a mount that spans a generation boundary, confirm fitment against your registration before buying.
Yes, fuel type affects the engine mount because the petrol and diesel units in the ML are physically different engines with different weight and mounting geometry, meaning the mounts are engineered differently for each. Always tell the breaker whether you have a petrol or diesel, and ideally supply the engine code from your V5 or a VIN check, as this is the most precise way to match the correct mount. Never assume a diesel mount will drop into a petrol ML or vice versa.
The W164 ran from 2005 to 2011 and received a facelift in 2008, but engine mounts are a mechanical part that follow the engine code rather than the facelift date, so a mount from a 2006 and a 2009 car may well be compatible if they share the same engine code. That said, whether mounting hardware or ancillary brackets changed mid-production across that 2008 facelift boundary is something you should confirm with the breaker against your registration, as we cannot state that as fact. Providing your engine code gives the breaker the best chance of supplying the right part first time.
No, trim level does not affect which engine mount you need – Sport, SE, AMG Line, and similar trims share the same engine and mounting setup as long as the engine code matches. The trim level changes cosmetic and comfort features like alloys, interior finish, and suspension tuning, not the fundamental engine mounting arrangement. Focus on matching engine code and fuel type rather than worrying about trim badges.
Even if both cars run a 3.0 diesel, the W163 (1997–2005) and W164 (2005–2011) are completely different platforms with different engine bays and subframe designs, so the mounts are not interchangeable between generations regardless of shared displacement. The engine codes across these two generations are also different units, so the displacement figure alone is not a reliable guide to fitment. Always match the generation first and then the engine code.
The year alone is not enough – the engine code is the single most useful piece of information you can supply, because Mercedes fitted the ML with a range of petrol and diesel engines across each generation that use different mounts even within the same model year. You can find the engine code on your V5 document or by running a VIN check, and sharing it with the breaker will cut out any ambiguity. The year and fuel type are helpful supporting details, but the engine code is what confirms the right mount.