Race-Spec P54 Headers for E46 M3 by 5150 AutoSport S85B50 - 5150 High Performance Coated

- 5150 High Performance Coated Main Bearing Set

All G45 models are interchangeable meaning they are the same size and can be swapped out without having to reconfigure any other turbo kit parts

giving your M54 the airflow benefits of the S54 ITB throttle system

FUEL INJECTOR COMPATIBILITY

these supercharger-specific cams ensure smooth

Race-Spec P54 Headers for E46 M3 by 5150 AutoSport S85B50 - 5150 High Performance CoatedThe 5150 AutoSport Race Spec P54 Header for E46 M3 is engineered for serious motorsport performance, drawing direct inspiration from BMWs legendary P54 race engine. Designed to maximize exhaust flow and reduce backpressure, this header is built to support high revving S54 engines under extreme racing conditions. Crafted from high grade stainless steel, it delivers exceptional durability and thermal stability while maintaining precise fitment for the