ARP 155-6022 Connecting Rod Bolt Kit High Performance Chrome Moly - 8740

The ARP 155-6022 Connecting Rod Bolt Kit features high-performance 8740 chrome moly construction, delivering reliable strength for racing and performance applications. This 2-piece bolt set represents ARP's commitment to manufacturing the industry's strongest, most reliable connecting rod fasteners.

Key Features:

• Forged in-house using premium quality 8740 chrome moly steel
• Heat-treated using specialized vertical racks for complete 360-degree penetration
• Threads rolled after heat treatment for up to 10 times longer fatigue life
• Precision CNC-machined to exacting tolerances
• Tensile strength range of 180,000 to 210,000 psi
• Each bolt stamped with ARP name for quality assurance

Wave-Loc Technology Benefits:

• Wave-Loc surface contacts rod and cap for optimum alignment and stress reduction
• Provides secure interference fit (.001 to .005) for all OEM connecting rods
• Superior material grain flow compared to knurled designs
• Smooth contact surface virtually eliminates galling and scoring
• No sharp edges or built-in stress risers

Installation and Maintenance:

Monitor bolt stretch regularly and replace when permanently elongated by .0005 inches. ARP's 8740 chrome moly offers excellent fatigue properties for most racing applications, providing a cost-effective solution with adequate strength and reliability. Stress corrosion and hydrogen embrittlement are typically not concerns when proper installation procedures are followed.

ARP connecting rod bolts are chosen as original equipment by numerous connecting rod manufacturers and are proven to deliver superior performance in demanding racing environments. The 8740 chrome moly material provides excellent toughness and adequate fatigue properties for the majority of racing applications where loads and rotational speeds are within normal parameters.