Cheap Mercedes-Benz CLS Water Pump

The CLS W219 ran from 2004 to 2010, and the second-generation W218 launched in 2011, so a 2008 and a 2011 car are from entirely different generations with different engine families — a direct swap is very unlikely. Fitment follows the engine code above all else, so share your engine code (from your V5 or a VIN check) with the breaker and they can confirm whether any overlap exists. Never assume year-to-year compatibility across a generation boundary like this one.

Both years sit within the W218 generation (2011–2018), so you are at least in the same engine family, which is a good start. However, the W218 received a facelift around 2014, and ancillary or mounting details can change across a facelift even when the core engine code stays the same — confirm against your specific registration with the breaker before buying. Supplying your engine code gives the breaker the best chance of matching the right unit.

Engine code matters more than anything else for a mechanical part like a water pump — Mercedes fitted several different petroland diesel engines to the CLS across both the W219 and W218 generations, and each engine can use a different pump design. Year and fuel type will narrow things down, but two CLS cars from the same year can have different engine codes and incompatible pumps. Find your engine code on your V5 logbook or through a VIN check and give it to the breaker — it is the single most useful detail you can supply.

Trim and badge names do not affect water pump fitment directly — what matters is which engine is under the bonnet, and the CLS 350 and CLS 63 AMG use completely different engines with different cooling system components. So yes, in this case the pumps will differ, but that is purely because of the engine code, not the trim designation itself. Give the breaker your engine code rather than just the badge name and they will identify the correct part.

No — diesel and petrol engines are fundamentally different units and their water pumps are not interchangeable, even within the same generation of CLS. Within each fuel type there can also be variation depending on the specific engine code fitted, so fuel type alone is not enough to guarantee a match. Always confirm your engine code with the breaker to make sure the pump from a donor car matches your exact engine.

Beyond confirming the engine code and year, it is worth asking the breaker whether the pump comes with its housing, gasket, or any associated brackets, as ancillary and mounting details can vary mid-production and the breaker can check these against your registration. Condition of the impeller and seal are worth querying too, since a used pump should show no signs of corrosion or play in the bearing. Always confirm fitment against your specific registration plate with the breaker before purchasing — no used part comes with a fitment guarantee.