Race-Spec P54 Headers for E46 M3 by 5150 AutoSport

The 5150 AutoSport Race-Spec P54 Header for E46 M3 is engineered for serious motorsport performance, drawing direct inspiration from BMW’s 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 E46 chassis. Whether you’re building a track car or a competitive race machine, this header offers a significant upgrade in engine breathing and power potential. It’s a must-have for S54 builds aiming to extract every ounce of performance from naturally aspirated setups—especially when paired with advanced tuning and supporting mods. For maximum performance, we recommend pairing this header with our S54 Stroker Kit and our S54 Cylinder Head Service. BMW S54 Applications: BMW 3 Series 2000-2006     E46     M3 BMW Z3 Series 2001-2002     Z3     M BMW Z4 Series 2006-2008     Z4     M