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Fitment on a used ac compressor varies by vehicle, so a bit of detail goes a long way. Our request form covers what breakers need to know, so every quote you get back is for the correct part:
The W164 generation runs from 2005 to 2011, while the W166 generation starts from 2012, so a 2008 and a 2012 ML are completely different platforms – the compressors are not interchangeable between these two generations. Within each generation, fitment is driven primarily by engine code rather than year alone, so always have your engine code to hand (found on your V5 or via a VIN check). Confirm exact compatibility with the breaker against your registration before ordering.
Both years fall within the W164 generation (2005–2011), so you are working within the same platform, which is a good start. However, fitment depends most heavily on engine code – for example, a 272 petrol engine and a 642 diesel unit will not share the same compressor – so match the engine code from your V5 rather than relying on year alone. Confirm the exact part against your registration with the breaker before purchasing.
No – trim level does not affect AC compressor fitment on the ML; whether your car is an SE, Sport, or AMG Line, the compressor is determined by the engine code, fuel type, and gearbox type, not the badge on the tailgate. You may find cosmetic differences between trim levels (such as alloy designs or interior finish) when viewing a donor vehicle at a breaker, but these have no bearing on whether the compressor will fit. Focus on matching the engine code above all else.
A 2011 ML is a W164 and a 2014 ML is a W166 (2012 onwards), so these are different generations and the compressors are very unlikely to be interchangeable. Even within the W166, fitment hinges on your specific engine code, so a like-for-like engine code match from a W166 donor is what you need. Confirm compatibility with the breaker against your registration to be certain.
Engine code matters far more than year for mechanical parts like the AC compressor – two MLs from the same year can have entirely different compressor units if one is a diesel (for example with a 642 engine code) and one is a petrol (for example with a 272 engine code). Fuel type and gearbox type also play a role, so always quote your engine code to the breaker rather than year alone. Your engine code appears on your V5 registration document or can be retrieved via a VIN check.
It is possible that ancillary details such as bracket positions or mounting configurations changed at some point during a generation's production run, even without a formal facelift. The W164 received a facelift in 2008 and the W166 received updates during its production, so mid-run changes cannot be ruled out. Confirm the specific part against your exact registration with the breaker to make sure the unit matches your vehicle precisely.