ARP 154-3705 Cylinder Head Fasteners - 12-Point High Performance 8740 Series

The ARP 154-3705 cylinder head fastener kit delivers professional-grade engine security with premium 8740 chrome moly steel construction rated at 200,000 psi. These high-performance head bolts feature a 12-point head design with wide-area flanges that eliminate the need for valve train removal during cylinder head retorquing, making maintenance faster and more convenient.

Advanced Manufacturing Process:

• Premium 8740 alloy steel exceeds aircraft quality standards
• Vertical rack heat-treatment ensures complete and uniform heat penetration to 200,000 psi
• Centerless grinding process with multiple precision cuts creates exceptionally straight, concentric fasteners
• Thread rolling performed after heat-treat delivers 1000% better fatigue strength than pre-heat-treat threading
• Specially undercut shorter studs equalize stretch for more consistent clamping force

Performance Benefits:

• 12-point head and wide-area flange design allows retorquing without valve train removal
• Permits use of larger diameter valve springs
• Superior clamping force helps prevent blown head gaskets
• Precision tolerances ensure cylinder heads and gaskets align perfectly during assembly
• Includes hardened parallel-ground washers for even load distribution and accurate torque readings

Each ARP fastener is manufactured to exacting tolerances and stamped with the ARP logo as your assurance of quality. The Pro Series construction meets ARP's zero-defect, zero-failure quality standard, making these fasteners the choice of professional engine builders across all forms of racing and high-performance applications.

Installation Note: Re-torque all fasteners after initial engine operation to compensate for head gasket compression and ensure optimal clamping force.