ARP 234-6422 Cylinder Head Fasteners - Premium Head Bolt Kit

ARP 234-6422 cylinder head fasteners are precision-engineered to deliver superior clamping force and reliability in high-performance engine applications. These head bolts are manufactured to ARP's exacting standards, ensuring consistent quality and performance under extreme cylinder pressures and thermal cycling.

Key Features:

• Forged in-house at ARP using premium alloy steel for maximum strength and durability
• Heat-treated using specialized vertical racks to ensure complete 360-degree penetration for uniform material properties
• Threads rolled after heat-treat to provide up to 10 times longer fatigue life compared to cut threads
• Precision CNC-machined to exact specifications for optimal fit and torque retention
• Engineered to handle extreme cylinder pressures and repeated thermal cycling
• Each fastener proudly stamped with the ARP name as assurance of quality

ARP cylinder head fasteners are the preferred choice of engine builders and racers who demand absolute reliability. The superior material properties and manufacturing processes used by ARP result in fasteners that resist stretching, maintain accurate torque values, and provide consistent clamping force throughout the engine's operating range. Whether you're building a high-performance street engine or a competition powerplant, ARP 234-6422 head fasteners deliver the strength and precision you need for a reliable, leak-free cylinder head installation.