ARP 134-6003 High Performance Connecting Rod Bolt Kit 8740 Chrome Moly

The ARP 134-6003 connecting rod bolt kit delivers the legendary strength and reliability that has made ARP the standard in high-performance engine fasteners. Manufactured from 8740 chrome moly steel and heat-treated to deliver tensile strengths between 180,000 and 210,000 psi, these rod bolts provide the critical strength needed to handle demanding racing applications while remaining cost-effective for budget-conscious builders.

Superior Manufacturing Process:

• Forged in-house at ARP using premium quality materials for consistent performance
• 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 compared to cut threads
• Precision CNC-machined to exacting specifications for perfect fitment
• Each bolt proudly stamped with the ARP name as assurance of quality

Wave-Loc Design Benefits:

• Wave-Loc surface contacts the rod and cap for optimum alignment and stress reduction
• Provides snug interference fit (.001 to .005 range) for all OEM connecting rods despite wide factory tolerances
• Superior material grain flow compared to knurled bolts that create stress risers
• Eliminates galling and scoring through smooth contact without digging into the rod

ARP rod bolts have been proven through testing to deliver ten times the fatigue strength of competing fasteners, making them the preferred choice of professional engine builders and connecting rod manufacturers worldwide. The 8740 chrome moly material offers excellent toughness and adequate fatigue properties for most racing applications when properly installed and maintained. Monitor bolt stretch regularly and replace any bolt that has permanently elongated by .0005 or more.