This part is listed by BMW as BMW part number 17129894743 (17-12-9-894-743) and is described as Genuine BMW Coolant Hose (Radiator to Intake Manifold) on G01 X3 M40i (2018-2019) and G02 X4 M40i (2018-2019).
Replaces obsolete BMW part # 17127535568 (17-12-7-535-568).
This is a Genuine BMW 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.
BMW Fitments:
X3 Series
G01 X3 (2018-2024) > X3 M40i B58A (2018-2019)
X4 Series
G02 X4 (2019-2024) > X4 M40i B58A (2018-2019)
