ARP 154-6403 Cylinder Head Fasteners High Performance Chrome Moly - 8740

The ARP 154-6403 cylinder head fasteners are precision-engineered fasteners designed to deliver superior clamping force and reliability in high-performance engine applications. Manufactured from premium 8740 chrome moly steel, these fasteners provide the strength and durability needed for demanding racing and performance environments.

Key Features:

• Forged in-house at ARP using only the finest quality 8740 chrome moly steel
• Heat-treated using special vertical racks to assure complete 360-degree penetration for consistent 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 optimal fit and performance
• Tensile strength between 180,000 and 210,000 psi for reliable clamping loads
• Each fastener proudly stamped with the ARP name as assurance of quality

About 8740 Chrome Moly Material:

8740 chrome moly is a proven quench and temper steel that delivers excellent toughness and adequate fatigue properties for most racing applications. When threads are rolled after heat-treatment (standard ARP practice), this material provides the optimal balance of strength, reliability, and cost-effectiveness for high-performance engines. ARP fasteners are engineered to handle anticipated loads plus a safety margin for occasional overloads, ensuring dependable operation under stress.

Why Choose ARP:

ARP fasteners are the preferred choice of engine builders and racers worldwide. Testing has demonstrated that ARP fasteners deliver up to ten times the fatigue strength of competitor products, making them the smart choice for anyone seeking maximum reliability and performance. Install with confidence knowing you're using fasteners trusted by professional race teams and engine manufacturers.