ARP 134-6022 High Performance Chrome Moly Connecting Rod Bolts - 8740

The ARP 134-6022 is a high-performance connecting rod bolt kit manufactured from 8740 chrome moly steel. This 2-piece bolt set represents the quality and reliability that has made ARP the choice of connecting rod manufacturers worldwide. Every bolt is forged in-house using premium materials and subjected to rigorous heat treatment and precision machining processes.

Why ARP Rod Bolts Are Superior:

The connecting rod bolt has historically been the weak link in engine durability. ARP addresses this with proprietary manufacturing processes that deliver up to 10 times the fatigue strength of competing fasteners. Each bolt is forged from 8740 chrome moly steel, a proven material that offers excellent toughness and fatigue properties for most racing applications. While considered moderate strength by modern standards, 8740 chrome moly delivers reliable tensile strengths between 180,000 and 210,000 psi when properly heat-treated.

Key Features:

• Forged in-house at ARP using premium quality 8740 chrome moly steel
• Heat-treated using special vertical racks to ensure complete 360-degree penetration
• Threads rolled after heat-treat to provide up to 10 times longer fatigue strength
• Precision CNC-machined to exacting specifications
• Each bolt proudly stamped with the ARP name as assurance of quality
• 2-piece kit for one connecting rod

Wave-Loc Technology Benefits:

• Wave-Loc surface contacts the rod and cap for optimum alignment and reduction of fluctuating stress
• Provides snug interference fit (.001 to .005) for all OEM connecting rods despite wide factory tolerances
• Superior material grain flow compared to knurled bolts that create stress risers
• Virtually eliminates galling and scoring through smooth contact surface
• Strengthens the rod itself by optimizing load distribution

Critical Maintenance Note:

Monitor bolt stretch regularly and replace any bolt that has permanently elongated by .0005 or more. This preventive maintenance ensures continued reliability and protects your engine investment.

Whether you're building a street performance engine or a dedicated race motor, ARP 134-6022 connecting rod bolts deliver the reliability and fatigue resistance needed for demanding applications. The 8740 chrome moly material provides an excellent balance of strength, toughness, and cost-effectiveness for engines operating under high loads and RPM.