Engine Water Pipe, Rein - 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 is a coolant pipe manufactured by Rein Automotive - an original supplier to BMW for many cooling and engine components. As the OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag. This part has a two year warranty.