Cheap Mercedes-Benz C-Class Water Pump

This is a critical generation boundary question: the W204 C-Class ran from 2007 to 2014, so a 2010 and a 2014 are both W204, but the 2014 sits in the post-facelift period (facelift arrived in 2011) and ancillary mountings can change mid-production. Fitment depends above all on the engine code, not the model year — if both cars share the same engine code (for example M271 or OM651), there is a strong chance of compatibility, but you should confirm against your registration with the breaker before buying.

Engine code matters far more than year for a mechanical part like a water pump — the C-Class has been sold with a wide range of petrol and diesel engines across every generation, and each engine family uses its own cooling circuit design. Two C-Classes from the same year but with different engines (say a 2.0 petrol M271 and a 2.2 diesel OM646) will use completely different water pumps. Your engine code is printed on your V5C or can be retrieved via a VIN check, and supplying it to the breaker is the single most useful thing you can do.

All mainstream C-Class variants — petrol and diesel — use a water pump as part of the engine's liquid cooling system, so this is not a petrol-only part. The design and mounting differ significantly between engine families such as the OM611, OM646, OM651 diesels and the M111, M271, M274 petrol units, so you must match on engine code rather than fuel type alone. Confirm the exact code with your breaker against your registration to make sure the unit they have suits your specific engine.

Trim level has no bearing on water pump fitment whatsoever — SE, Avantgarde, Sport, and AMG Line are specification packages affecting interior, wheels, and cosmetic details, not the engine or its cooling components. What drives fitment is the engine code fitted to that car, which can be the same across all trim levels or vary depending on which engine option was chosen at the point of sale. If a breaker pulls a water pump from an SE and your car is an AMG Line with the same engine code, the part is mechanically equivalent.

The W203 ran from 2000 to 2007 and the W204 from 2007 to 2014, and these are distinct generations with different engine families — even where an engine code appears in both generations, cooling system components including the water pump can differ due to updated engine variants or ancillary changes. Do not assume cross-generation compatibility based on engine name alone; check the full engine code on your V5C and confirm directly with the breaker whether the specific unit they have suits your W204. This is a boundary where routing to the breaker rather than assuming is strongly advised.

The W205 generation ran from 2014 to 2021 and introduced a new family of engines including the M274 petrol and OM626 and OM654 diesels, which are largely different from the units used in the W204. Because the water pump is matched to the engine block design, earlier C-Class pumps are very unlikely to be compatible with W205 engines, even if the car looks similar externally. Supply your engine code to the breaker and confirm compatibility against your registration before committing to a purchase.