B46 Main Bearing Set, High-Performance

Built specifically for the BMW B46 engine platform, 5150 AutoSport Calico Coated Main Bearings are engineered for demanding performance builds where reliability and strength are non-negotiable. These bearings are coated by Calico with a proven dry-film lubricant that reduces friction, enhances wear resistance, and offers superior performance under high stress.

Whether you're running a high-boost turbo setup, pushing the limits on track, or building a street car with big power goals, these main bearings are made to handle it. The thermal-resistant coating helps safeguard the engine during low oil pressure events—minimizing the risk of bearing failure common in stock components under extreme conditions.

Tested in competitive and high-horsepower B46 builds, 5150 main bearings deliver consistent performance, long-term durability, and added peace of mind where it matters most.

Tech Notes:

• Always confirm bearing size and clearances before installation.
• Professional installation is strongly recommended due to the precision tools required.
• No returns accepted on engine bearings.