ARP 300-6724 Custom Age Cylinder Head Fasteners - 625+

The ARP 300-6724 cylinder head fasteners are precision-engineered fasteners designed to deliver superior clamping force and reliability in high-performance engine applications. Manufactured from Custom Age 625+ super-alloy material, these fasteners provide exceptional tensile strength in the 260,000-280,000 psi range with complete resistance to atmospheric corrosion and oxidation.

Custom Age 625+ Material Advantages:

• Superior fatigue cycle life compared to conventional chrome moly and steel alloys
• Exceptional tensile strength and toughness for extreme clamping loads
• Complete immunity to hydrogen embrittlement and stress corrosion
• Maintains performance in high-temperature, high-stress environments
• Does not require special moisture protection like lower-grade materials

ARP Manufacturing Quality:

• Forged in-house using only the finest quality materials
• Heat-treated using special vertical racks to assure complete 360-degree penetration
• Threads rolled after heat-treat to provide up to 10-times longer fatigue strength
• Precision CNC-machined to exacting specifications
• Each fastener proudly stamped with the ARP name as assurance of quality

ARP fasteners are the choice of professional engine builders and racers worldwide, trusted to deliver consistent performance in the most demanding applications. Custom Age 625+ represents the latest advancement in super-alloy fastener technology, offering superior performance at a more accessible price point than previous exotic materials.