This billet aluminum coolant pipe replaces the factory plastic coolant neck that is a potential failure point in M240i, M340i, M440i, 540i, 740i, 840i, X3, X4, X5, X6, X7, Z4 models. This pipe sends cool coolant from the pump to the engine block. The original is plastic and in a very vulnerable location so it's possible to develop cracks or leaks on the plastic, leading to an annoying coolant leak or even cooling system failure.
This replaces BMW part number 11518482258 (11 51 8 482 258), the original plastic coolant pipe (aka connecting branch) on B58C, B58D, and B58TU engines.
A new o-ring is included.
For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.
G42 / G43 (2022+) > M240i xDrive
G20 (2019+) > M340i
G20 (2019+) > M340i xDrive
G22 / G23 (2021+) > M440i
G22 / G23 (2021+) > M440i xDrive
G30 (2017-2022) > 540i (B58C 2020-)
G30 (2017-2022) > 540i xDrive (B58C 2020-)
G12 (2016+) > 740i
G12 (2016+) > 740i xDrive
G14 / G15 (2019+) > 840i xDrive
G01 X3 (2018+) > X3 M40i
G02 X4 (2019+) > X4 M40i
G05 X5 (2019+) > X5 xDrive40i
G07 X7 (2019+) > X7 xDrive40i
G29 Z4 (2019+) > Z4 M40i