Water Pump, Metal Impeller, Graf - E36, E46, E39, Z3, Z4, M50, M54, S52

This water pump for the E36 and E34 uses a metal impeller to pump coolant through the system. Metal impellers are virtually indestructible unlike the plastic or composite impellers of the original pump (although they are heavier). If what you value is a water pump with the highest reliability this OEM metal design is the best option (composite has shown to be just as reliable).

This is a water pump made by Graf, an original supplier to BMW for this pump as well as other cooling system components. It comes with a two year warranty.