B46 Cylinder Head Service by 5150 AutoSport Service:Pro-Xtreme ARP recommends using the Stretch

ARP recommends using the Stretch Method when tightening rod bolts

•Compatible with all G4X ECU’s

Strength for High-Performance Driving

a track-day machine that still needs to idle cleanly

270°/268° cams to suit BMW's Gen 2 B58 engine with bolt on intake

B46 Cylinder Head Service by 5150 AutoSport Service:Pro-Xtreme ARP recommends using the Stretch5150 AutoSport Performance Cylinder Head Services for BMW B46 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 (Rebuild