ARP 151-6004 Cylinder Head Fasteners High Performance Chrome Moly

The ARP 151-6004 cylinder head fasteners deliver race-proven reliability and exceptional clamping force for high-performance engine applications. Manufactured from premium 8740 chrome moly steel, these fasteners are engineered to withstand extreme cylinder pressures and thermal cycling while maintaining precise torque retention.

Premium Manufacturing Process:

• Forged in-house at ARP facilities using aerospace-quality materials
• Heat-treated on specialized vertical racks for complete 360-degree penetration and uniform hardness
• Threads rolled after heat-treat process to provide up to 10 times longer fatigue life
• Precision CNC-machined to exacting tolerances for consistent fit and performance
• Each fastener individually inspected to ensure dimensional accuracy

8740 Chrome Moly Material Benefits:

• Tensile strength range of 180,000 to 210,000 psi for demanding applications
• Excellent fatigue resistance when properly installed and torqued
• Superior grain structure compared to standard grade fasteners
• Proven reliability in street performance, drag racing, and road racing environments
• Cost-effective solution that delivers professional-grade performance

ARP fasteners are the choice of professional engine builders and racing teams worldwide. Each fastener is proudly marked with the ARP name as your assurance of quality and precision engineering.