5150 AutoSport High Performance Main Bearing Set, BMW S14

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5150 AutoSport's High-Performance Coated Main Bearing Set for BMW S14 engines is engineered for maximum durability and efficiency in high-performance builds. Coated by Calico, thes e bearings reduce friction, allowing the engine to generate more power while resisting wear from extreme stress and high RPMs. The advanced thermal-resistant coating makes them ideal for forced induction and racing applications, providing reliable protection even during oil pressure loss, which is crucial for preventing catastrophic engine failure. Proven in both street and track conditions, these bearings consistently outperform OEM options, offering greater longevity and reliability. Tech Notes: As with all bearings, please check your tolerances and size before installation. Due to the specialized tools needed, professional install recommended. There are no returns available on any engine bearings. BMW S14 Applications: BMW S14B20 1989-1991 E30 320is [Portugal and Italy] BMW S14B23 1986-1991 E30 M31986-1987 E30 M3 Evo I1988 E30 M3 Evo II BMW S14B25 1990 E30 M3 Sport Evo (Evo III) Show more