ARP 155-6023 Cylinder Head Fasteners High Performance Head Bolt - Set

The ARP 155-6023 cylinder head fasteners deliver professional-grade clamping force and reliability for high-performance engine builds. Manufactured from premium 8740 chrome moly steel, these fasteners are engineered to withstand extreme cylinder pressures and temperatures while maintaining precise torque retention throughout the engine's operating range.

Key Features:

• Constructed from 8740 chrome moly steel with tensile strength up to 210,000 psi
• Forged in-house at ARP using premium quality materials for consistent performance
• Heat-treated using vertical racks to ensure complete 360-degree penetration
• Threads rolled after heat-treat process for up to 10 times longer fatigue life
• Precision CNC-machined to exacting tolerances for proper fit and clamping load
• Application-specific design optimized for cylinder head retention requirements

ARP fasteners are the choice of professional engine builders and racers worldwide. Each bolt undergoes rigorous quality control and features the ARP name stamped directly on the fastener as assurance of authenticity. These head bolts provide superior fatigue strength compared to OEM fasteners, making them ideal for performance street engines, racing applications, and high-boost forced induction builds where reliable head gasket sealing is critical.