ARP 203-6003 Cylinder Head Fasteners High Performance Chrome Moly - 8740

The ARP 203-6003 cylinder head fastener kit delivers race-proven reliability for demanding engine builds. Manufactured from premium 8740 chrome moly steel, these fasteners are engineered to provide consistent clamping force and exceptional durability under extreme cylinder pressures and temperatures.

Key Features:

• Forged in-house at ARP using premium 8740 chrome moly alloy steel
• Heat-treated using specialized vertical racks to ensure complete 360-degree penetration for uniform strength
• Threads rolled after heat-treat to provide up to 10 times longer fatigue life compared to cut threads
• Precision CNC-machined to exacting specifications for perfect fit and optimal load distribution
• Tensile strength rated between 180,000 and 210,000 psi for reliable performance in most racing applications
• Each fastener proudly stamped with the ARP name as your assurance of quality

Why ARP Fasteners:

ARP fasteners are the choice of professional engine builders and racers worldwide. Through superior metallurgy, precise manufacturing processes, and rigorous quality control, ARP fasteners deliver the clamping force consistency and fatigue resistance necessary to prevent head gasket failures and maintain proper engine sealing. The 8740 chrome moly material provides excellent toughness with adequate fatigue properties for most racing applications when combined with ARP's post-heat-treat thread rolling process.

Complete kit includes all necessary fasteners for your application. Always follow ARP's installation instructions and use ARP Ultra-Torque fastener assembly lubricant for accurate torque readings and optimal performance.