To guarantee reliability, choose BMW part # 17128678509 Expansion Tank-Cylinde Pipe. It is also referred to as Cooling Hose, Oil Cooler Hose, Coolant Reservoir Hose. This genuine part is built directly by BMW under very rigorous testing and developed using reliable materials to tolerate years of heavy use and present long-lasting performance. This part fits 2020-2023 530i, 2020-2023 540i, 2020 740i, 2020-2023 530i xDrive.
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