Porsche Head Stud Kit - 911-930 Turbo

The ARP Porsche Head Stud Kit for 911-930 Turbo (ARP 204-4206) is designed for builders and enthusiasts who prioritize reliability under extreme cylinder head pressure. This kit is essential for those looking to enhance the performance of their turbocharged flat-six engines, as it addresses the potential weaknesses of factory fasteners.

Constructed from ARP's proprietary alloy steel, the head studs in this kit are engineered to eliminate stretch fatigue and provide consistent clamping force across multiple heat cycles. This design helps distribute load more uniformly than traditional bolts, thereby reducing stress concentrations and preserving cylinder head integrity during high-performance operation.

Ideal for anyone rebuilding a 911 Turbo engine, this head stud kit ensures that your engine can handle the demands of increased boost levels. Proper installation requires torque sequencing and the use of ARP fastener assembly lube, making it suitable for qualified mechanics during a standard head gasket service.