ARP 145-6022 Cylinder Head Fasteners High Performance Chrome Moly - 8740

The ARP 145-6022 cylinder head fasteners are engineered to deliver superior clamping force and reliability in high-performance engine applications. Manufactured from premium 8740 chrome moly steel, these fasteners provide tensile strengths between 180,000 and 210,000 psi, making them an ideal upgrade for enthusiasts seeking proven durability and consistent performance.

Key Features:

• Forged in-house at ARP using premium quality 8740 chrome moly steel
• Heat-treated using specialized vertical racks to ensure complete 360-degree penetration
• Threads rolled after heat-treatment to provide up to 10 times longer fatigue life
• Precision CNC-machined to exacting specifications for proper fit and function
• Engineered specifically for optimum reliability in demanding applications

About 8740 Chrome Moly Material:

8740 chrome moly is a quench and temper steel recognized for its excellent toughness and adequate fatigue properties for most racing applications. When threads are rolled after heat-treatment—standard ARP practice—this material delivers reliable performance with tensile strengths typically ranging from 180,000 to 210,000 psi. This makes 8740 an excellent cost-effective solution for applications where bolt strength matches anticipated loads plus a safety margin.

ARP fasteners are trusted by professional engine builders and racers worldwide for their exceptional quality control, superior fatigue strength, and consistent performance. Each fastener is proudly stamped with the ARP name as your assurance of quality.