Mercedes-Benz OM651 Water Pump Identification Guide

Mercedes-Benz OM651 Water Pump Identification Guide

There are three visually similar water pump assemblies for the OM651 2.1 CDI diesel engine.
Although they share the same engine code, they are not interchangeable. Installing the wrong unit will result in cooling system faults, engine overheating and product returns.
OE Part Number & Vehicle Application
OE# A6512007801
No extra side outlet on water pipe.
Fit for passenger cars: C-Class, E-Class, GLK, ML.
OE# A6512001251
Comes with an extra side outlet on the water pipe.
Fit for V-Class and Vito vans.
OE# A6512008401
Short straight water pipe without side outlet.
Fit for Sprinter W906 commercial vehicles.
Important Reminder:
Always confirm the original OE number from your old component.
Do not select parts based only on the OM651 engine code.
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