Engine Water Pipe, Genuine BMW - E39 E46 E85 Z3

This is the plastic return pipe mounted on the back of the water pump and returns coolant from the pump to the expansion tank. The complete return pipe is two pieces and this is the upper portion coming out of the pump. The best way to access this pipe is with the intake manifold off, such as for a crankcase vent replacement.

This part is listed by BMW as BMW part number 11537502525 (11-53-7-502-525) and is described as Genuine BMW Coolant Return Hose.

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