ARP 126-6101 Cylinder Head Fasteners High Performance Chrome Moly - 8740

The ARP 126-6101 cylinder head fasteners are precision-engineered fasteners designed to deliver superior clamping force and reliability in high-performance engine applications. Manufactured from ARP's premium 8740 chrome moly steel, these fasteners provide the strength and durability needed for demanding racing and performance environments.

Key Features:

• Constructed from 8740 chrome moly steel with tensile strength between 180,000-210,000 psi
• Forged in-house at ARP using premium quality materials for consistent performance
• Heat-treated using specialized vertical racks to ensure complete 360-degree heat penetration
• Threads rolled after heat treatment to provide up to 10 times longer fatigue life
• Precision CNC-machined to exacting tolerances for optimal fit and function
• Each fastener proudly stamped with the ARP name as assurance of quality

Why ARP Fasteners:

• Superior fatigue strength compared to OEM and competitor fasteners
• Specially designed grain flow patterns minimize stress concentrations
• Proven reliability in racing applications from drag racing to road course endurance
• Complete kit includes all necessary fasteners for installation

ARP's 8740 chrome moly material offers excellent toughness and adequate fatigue properties for most racing applications while remaining cost-effective. The quench and temper heat treatment process, combined with post-heat-treat thread rolling, ensures maximum strength and longevity. These fasteners are engineered to handle high cylinder pressures and thermal cycling without compromising clamp load integrity.