This part is listed by BMW as BMW part number 17129845508 (17 12 9 845 508) and is described as a charge air cooler hose for 2021+ G01 X3 M40i and G02 X4 M40i. This hose returns hot coolant from the intake manifold back to the front radiator (heat exchanger). It also connects to the small expansion tank and the A/C condenser.
This is a Genuine BMW X3 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.
For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.
BMW Fitments:
X3 Series
G01 X3 (2018+) > X3 M40i B58D (2020+)
X4 Series
G02 X4 (2019+) > X4 M40i B58D (2020+)
