Expansion Tank Vent Hose, BMW - G01 X3 30i, G02 X4 30i (B46D)

This part is listed by BMW as BMW part number 17125A4E4B5 (17 12 5 A4E 4B5) and is described as the coolant expansion / vent line from the engine to the coolant reservoir on 2019+ G01 X3 30i and G02 X4 30i (B46D engine).

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.