This part is listed by BMW as BMW part number 17119468698 (17 11 9 468 698) and is described as the short hose connecting the auxiliary radiator with the main engine radiator on 2020+ G01 X3 M40i, G02 X4 M40i (B58D or B58TU engine) as well as F97 X3M and F98 X4M. This small radiator is installed on either the right or left side and adds extra capacity to the cooling system. The M40i has one radiator (right side). The X3M/X4M has one on each side.
This is a Genuine BMW X3 remote radiator 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
F97 X3M (2020+) > X3M
X3 Series
G01 X3 (2018+) > X3 M40i B58A (2018-2019)
G01 X3 (2018+) > X3 M40i B58D (2020+)
X4 Series
F98 X4M (2020+) > X4M
X4 Series
G02 X4 (2019+) > X4 M40i
