ARP 454-3702 Cylinder Head Bolt Kit High Performance Series 12-Point

The ARP 454-3702 cylinder head fastener kit delivers professional-grade engine sealing with High Performance Series bolts engineered for demanding applications. These fasteners provide the strength and reliability that professional engine builders depend on for both street and competition engines.

High Performance Series Construction:

• Cold-forged premium chrome moly steel construction for molecular integrity
• Heat-treated to 180,000 psi tensile strength (15% stronger than Grade 8)
• 12-point head design with wide area flange for secure grip
• Thread rolled after heat-treatment for superior fatigue resistance
• Centerless ground to exacting tolerances for precise alignment
• Includes hardened parallel-ground washers for even load distribution

Design Advantages:

The reduced wrenching profile and wide flanged head design eliminates the need for valve train removal during cylinder head retorquing, saving valuable time during maintenance and assembly. Each bolt is manufactured with precise concentricity, allowing cylinder heads and gaskets to align effortlessly during installation. The included hardened washers ensure accurate torque readings and consistent clamping force across all fasteners.

Manufacturing Excellence:

ARP's vertical rack heat-treating process ensures complete and uniform heat penetration, resulting in consistent strength throughout each fastener. The thread rolling process performed after heat-treatment creates threads that are approximately ten times more fatigue-resistant than pre-heat-treat threading methods. Each fastener is marked with the ARP stamp as verification of authentic quality.

This complete kit includes all necessary head bolts and washers for proper installation. For optimal performance and head gasket sealing, fasteners should be re-torqued after initial engine break-in to compensate for gasket compression.