To guarantee reliability, choose BMW part # 11348603911 Engine Valve Spring. It is also referred to as Rocker Shaft Spring Kit. 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 2017-2022 530i, 2018-2023 X3, 2019-2023 X5, 2019-2023 Z4.
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