ARP 203-6002 High Performance Connecting Rod Bolt Kit Chrome Moly - 8740

The ARP 203-6002 is a complete high-performance connecting rod bolt kit manufactured from premium 8740 chrome moly alloy steel. Designed to eliminate the weak link in connecting rod assemblies, these fasteners deliver the exceptional strength and reliability that professional engine builders and racers demand.

Key Features:

• Forged in-house at ARP using only the finest quality 8740 chrome moly steel
• Heat-treated using special vertical racks to ensure complete 360-degree penetration
• Threads rolled after heat-treatment to provide up to 10 times longer fatigue strength
• Precision CNC-machined to exacting specifications for consistent performance
• Tensile strength between 180,000 and 210,000 psi when properly heat-treated
• Each bolt proudly stamped with the ARP name as assurance of quality

Wave-Loc Technology Benefits:

• Wave-Loc surface contacts the rod and cap for optimum alignment and reduced fluctuating stress
• Provides interference fit range of .001 to .005 inches 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 surfaces

Installation Requirements:

It is critically important to monitor bolt stretch and replace any bolt that has permanently elongated by .0005 inches. ARP rod bolts feature superior fatigue strength—testing shows up to ten times the fatigue resistance of competing fasteners. The 8740 chrome moly material offers excellent toughness with adequate fatigue properties for most racing applications, making it a cost-effective solution when bolt strength appropriately matches anticipated loads plus a safety margin.

This complete kit includes all necessary fasteners for your connecting rod assembly. When properly installed with recommended lubricants and torque specifications, ARP 203-6002 rod bolts deliver the reliability and performance that has made ARP the choice of leading connecting rod manufacturers worldwide.