421 (driver side)996

Fiberglass-reinforced nylon construction

providing your engine with the resilience needed for competitive racing environments

5 mm bore size provides a displacement of 2493 cc

Kit Includes: ARP2000 bolts

M52TU Cylinder Head Service by 5150 AutoSport Service:Stage 2 421 (driver side)9965150 AutoSport Performance Cylinder Head Services for BMW M52TU Engines Please note that price is based on customer providing core. If you need help sourcing a core, please contact our sales team. Investing in a performance cylinder head service is crucial for optimizing engine potential in performance builds. We offer three levels of service to meet your budget and build goals, from OEM refresh to full race level machining: Stage 1 OEM Refresh