Charge Air Cooler Aux Pump-Radiator Hose, BMW - F8X M2/M3/M4, S55

This part is listed by BMW as BMW part number 17122284690 (17-12-2-284-690) and is described as the rubber hose running out of the auxiliary water pump to the front and side radiators on F87 M2 Competition, F80 M3, F82 M4. This hose is part of the Low Temp cooling circuit providing coolant to the top-mount charge intake air cooler on the S55.

This is a Genuine BMW S55 coolant 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.

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