Auxiliary Radiator, BMW - F85 X5M, F86 X6M, F15 X5 40e

This part is listed by BMW as BMW part number 17117533477 (17-11-7-533-477) and is described as Genuine BMW Auxiliary Radiator for F85 X5M (2015-2018), F86 X6M (2015-2019), and F15 X5 40e (2014-2018).

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.