Expansion Tank Vent Hose, Rein - F22 228i, F30 320i/328i, F32 428i

This is the expansion tank vent hose running from the upper radiator hose to the expansion tank on N20 and N26 engines used on F22 228i, F30 320i/328i, and F32 428i models. As cooling system pressure builds (expands) overflow fluid will travel this hose to the coolant reservoir (expansion tank).

This is an OEM F22/F30/F32 expansion tank hose manufactured by Rein Automotive - the original supplier to BMW for this part, as well as many other cooling 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.