ARP 245-6422 Cylinder Head Stud Kit

The ARP 245-6422 cylinder head stud kit delivers the superior clamping force and reliability that serious engine builders demand. Engineered specifically for high-performance applications, these studs provide more accurate torque loading and better load distribution than conventional head bolts, making them essential for engines operating under elevated cylinder pressures.

Why Studs Over Bolts:

Cylinder head studs offer significant advantages over traditional head bolts. When properly installed, studs eliminate the torsional stress that occurs with bolts during installation, providing more consistent clamping loads. The stud remains stationary while only the nut turns, resulting in more accurate torque readings and reduced thread wear. This design also allows for easier engine assembly and disassembly during maintenance.

ARP Quality and Manufacturing:

• Manufactured from premium ARP2000 alloy steel, heat-treated to 220,000 PSI tensile strength
• Threads rolled after heat-treat for up to 10 times greater fatigue strength
• Precision CNC-machined to exacting tolerances for perfect fitment
• Forged in-house at ARP facilities using proprietary processes
• Heat-treated using special vertical racks to ensure complete 360-degree penetration
• Each component proudly marked with the ARP name as assurance of quality

Installation Notes:

ARP studs require proper installation procedures for optimal performance. Always use ARP Ultra-Torque fastener assembly lubricant or moly-based lubricant on threads and under washers. Follow the manufacturer's torque specifications and tightening sequence. Clean all threads in the block thoroughly before installation to ensure accurate torque readings and prevent thread damage.

ARP fasteners are the choice of professional engine builders and racers worldwide who demand absolute reliability. Whether you're building a street performance engine or a competition powerplant, ARP 245-6422 cylinder head studs provide the clamping security needed to keep your cylinder heads sealed under the most demanding conditions.