This part is listed by BMW as BMW part number 17138687503 (17 13 8 687 503) and is described as the Genuine BMW Coolant Expansion Tank for F48 X1 28i (2020-2023), F39 X2 28i (2020-2023), and F44 228i (2021+) models with the B46D 4-cylinder turbo engines. It also fits MINI F54/F56/F55/F60 Cooper models with the same turbo engines.
This is a Genuine BMW coolant reservoir 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.
Cap sold separately. Please see below for BimmerWorld recommended related items.
BMW Fitments:
2 Series
F44 Gran Coupe (2021+) > 228i xDrive GC
X1 Series
F48 X1 (2016-2023) > X1 28i
F48 X1 (2016-2023) > X1 28i xDrive
X2 Series
F39 X2 (2018-2023) > X2 sDrive28i FWD (18-23)
F39 X2 (2018-2023) > X2 xDrive28i (18-23)
