ARP 254-3710 Pro Series Cylinder Head Bolt Kit - 12-Point

The ARP 254-3710 Pro Series Cylinder Head Bolt Kit delivers professional-grade engine fastening for high-performance and racing applications. Engineered with ARP's renowned ARP2000 material and precision manufacturing processes, this complete bolt kit provides the reliability and consistency demanded by serious engine builders.

Key Features:

• ARP2000 Pro Series construction rated at 200,000 psi tensile strength
• 12-point head design for improved wrench engagement and accessibility
• Cold-forged for enhanced molecular integrity and durability
• Heat-treated prior to thread rolling for superior fatigue resistance
• Wide-area flanged head eliminates need for valve train removal during retorquing
• Includes hardened parallel-ground washers for even load distribution
• Reduced wrenching profile accommodates larger diameter valve springs
• Undercut short bolts compensate for head gasket compression

Professional-Grade Manufacturing:

Each fastener undergoes ARP's exacting manufacturing process, including vertical rack heat-treatment for complete penetration and centerless grinding for exceptional concentricity. Thread rolling is performed after heat-treat, providing approximately ten times better fatigue strength compared to pre-heat-treat threading methods. This precision ensures cylinder heads and gaskets align perfectly during assembly while delivering consistent, reliable clamping force.

Application:

Pro Series head bolts are designed for competition and high-performance builds where maximum strength and reliability are essential. The complete kit includes all necessary fasteners and washers for proper installation. Suitable for engines that require head bolt retention rather than stud conversion, particularly in chassis configurations where engine removal would otherwise be necessary for service.

Installation Notes:

Torque to manufacturer specifications using ARP Ultra-Torque or ARP Moly Assembly Lube. Re-torque fasteners after initial engine run-in to compensate for head gasket compression. The 12-point head design and reduced wrenching hex allow cylinder head service without valve train disassembly.