Vent Hose, BMW - F87 M2 Competition, F80 M3, F82 M4, S55

This hose runs from the top of the radiator to the expansion tank reservoir on F87 M2 Competition, F80 M3, and F82/F83 M4 models. It allows excess coolant and vapor to escape the system. A critical hose for optimum cooling system performance.

This is a Genuine BMW S55 cooling hose with a two year warranty. Buying a Genuine part will usually be more expensive than an OEM or aftermarket brand but you are assured that it meets BMW's designs for fitment, performance, and longevity. It will also be the very latest design, incorporating any updates or revisions that an aftermarket brand typically will ignore.