This part is listed by BMW as BMW part number 17139485733 (17-13-9-485-733) and is described as Genuine BMW Coolant Expansion Tank for liquid-to-air intercooler on G30 530i, 540i (2017-2023), G12 740i (2016-2023), and G14/G15/G16 840i (2019-2025).
Cap sold separately. Please see below for BimmerWorld recommended related items.
This is a Genuine BMW G30 expansion tank 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:
5 Series
G30 (2017-2023) > 530i B46A (2017-2019)
G30 (2017-2023) > 530i B46D (2020-2023)
G30 (2017-2023) > 530i xDrive B46A (2017-2019)
G30 (2017-2023) > 530i xDrive B46D (2020-2023)
G30 (2017-2023) > 540i B58A (2017-2019)
G30 (2017-2023) > 540i B58C (2020-2023)
G30 (2017-2023) > 540i xDrive B58A (2017-2019)
G30 (2017-2023) > 540i xDrive B58C (2020-2023)
7 Series
G12 (2016-2023) > 740i
G12 (2016-2023) > 740i xDrive
8 Series
G14 / G15 / G16 (2019+) > 840i xDrive
