featuring studs of 10

The ARP connecting rod bolt set includes bolts and lubricant that are precisely engineered to fit seamlessly with the rods and crankshafts

Multi-Layer Steel also known as "MLS" head gaskets are preferred as an aftermarket alternative for high-performance BMW engines

For maximum durability

N55 Cylinder Head Service by 5150 AutoSport Service:Stage 2 featuring studs of 105150 AutoSport Performance Cylinder Head Services for BMW N55 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