ARP 150-6404 Wave-Loc Connecting Rod Bolt Kit Chrome Moly - 8740

The ARP 150-6404 is a high-performance connecting rod bolt kit manufactured from 8740 chrome moly steel. This complete Wave-Loc kit features ARP's proprietary wave-lock design that provides superior alignment and interference fit while eliminating the stress risers associated with traditional knurled bolts.

Wave-Loc Technology Benefits:

• Patented wave surface contacts rod and cap for optimal alignment and reduced fluctuating stress
• Provides interference fit of .001 to .005 inches to accommodate wide range of OEM connecting rod bolt hole tolerances
• Superior material grain flow compared to knurled bolts with sharp edges
• Smooth contact surface virtually eliminates galling and scoring of connecting rod
• Strengthens the connecting rod itself by reducing stress concentration

Premium ARP Construction:

• Forged in-house using premium 8740 chrome moly steel
• Heat-treated using special 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
• Each bolt proudly stamped with ARP name for quality assurance

About 8740 Chrome Moly Material:

The 8740 chrome moly alloy is a proven quench and temper steel offering excellent toughness and adequate fatigue properties for most racing applications. Heat-treated to deliver tensile strengths between 180,000 and 210,000 psi, this material provides reliable performance with proper installation and maintenance. It offers a cost-effective solution when bolt strength is matched appropriately to anticipated loads plus a safety margin.

Important Installation Note:

Monitor bolt stretch during use and replace any bolt that has permanently elongated by .0005 inches or more to maintain optimal connecting rod reliability and performance.