To guarantee reliability, choose BMW part # 12311714521 Grooved Ball Bearing. It is also referred to as Alternator Bearing. 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 1984-1985 318i, 1985-1988 535i, 1985-1989 635CSi, 1985-1986 735i.
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