5150 AutoSport High Performance Main Bearing Set, BMW S14

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, these 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     M3
1986-1987      E30     M3 Evo I
1988      E30     M3 Evo II

BMW S14B25

1990      E30     M3 Sport Evo (Evo III)