Mercedes-Benz ML Oil Cooler Replacement Parts

Yes, oil coolers are fitted to the Mercedes-Benz ML across multiple generations, though fitment depends on the engine variant — diesels in particular (such as the OM642 and OM648 units) commonly use an engine oil cooler integrated with or mounted near the oil filter housing, and petrol engines in some generations also carry one. If you are searching for a used unit, the engine code from your V5 or a VIN check is the single most important detail, as the cooler design is tied directly to the engine rather than the model badge or trim level.

The W163 and W164 are completely different generations with different engines, oil filter housings, and cooling system layouts, so parts do not transfer between them. The W163 runs older engine families while the W164 introduced units like the OM642 3.0 diesel and M272/M273 petrol engines, all of which have their own specific cooler designs. You need to source a cooler matched to your exact generation and engine code — confirm the part number with the breaker against your registration before buying.

The W164 received a facelift around 2008, and for the most part the core engine codes carried over, meaning the oil cooler is likely the same unit for the same engine within the W164 generation. However, ancillary and mounting changes can occur mid-production even on the same engine, so you should confirm the specific part number with the breaker against your registration rather than assuming a straight swap.

Trim level makes no difference at all to the oil cooler — SE, Sport, and AMG Line are specification packages covering interior, wheels, and cosmetic features, not the engine or cooling system. What determines the correct oil cooler is the engine code, so an ML350 BlueTEC with the OM642 engine will use the same cooler regardless of whether it is an SE or AMG Line. Focus entirely on matching the engine code, and ignore the trim badge when sourcing this part.

The W166 is a newer generation with revised and in some cases entirely different engine variants compared to the W164, so you cannot assume parts cross over between generations even if the engine code looks similar. The W166 generation ran through to around 2019 and included engines such as the OM642 diesel in updated form, but cooling system components, oil filter housing designs, and cooler configurations can differ from the W164 application. Always confirm the part against your exact registration and engine code with the breaker before purchasing.

Petrol-engined MLs can carry an oil cooler depending on the specific engine, though oil coolers are more commonly associated with the diesel variants where thermal management of the engine oil is particularly important. Whether your petrol ML has one, and what form it takes, depends on the exact engine code rather than simply being petrol or diesel. Check your V5 or run a VIN check to get your engine code and supply that to the breaker, as this is the only reliable way to confirm the correct part for your vehicle.