-Fuel Cell Foam

Line honing of main journals

To further enhance longevity

modified suspensions

designed for the S54 inline-six in E46 M3

B46 Main Bearing Set, High-Performance 64185-8-V-52 -Fuel Cell FoamBuilt 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