This part is listed by BMW as BMW part number 17125A09423 (17-12-5-A09-423) and is described as Genuine BMW Coolant Pipe/Hose (Radiator to Expansion Tank) for G30 530i, 540i (2017-2019).
Supersedes obsolete BMW part number 17128602599 (17-12-8-602-599).
BMW Fitments:
5 Series
G30 (2017-2023) > 530i B46A (2017-2019)
G30 (2017-2023) > 530i xDrive B46A (2017-2019)
G30 (2017-2023) > 540i B58A (2017-2019)
G30 (2017-2023) > 540i xDrive B58A (2017-2019)