ARP 102-6003 High Performance Connecting Rod Bolt Kit Chrome Moly - 8740

The ARP 102-6003 is a complete connecting rod bolt kit engineered with ARP's renowned 8740 chrome moly alloy for high-performance and racing applications. Designed to eliminate the weakest link in any connecting rod assembly, these precision-manufactured bolts deliver superior strength and fatigue resistance that has made ARP the industry standard for professional racers and engine builders worldwide.

8740 Chrome Moly Material

These bolts are constructed from 8740 chrome moly steel, a proven quench and temper alloy that delivers tensile strengths between 180,000 and 210,000 psi. While considered moderate strength by modern standards, 8740 provides excellent toughness and adequate fatigue properties for most racing applications when manufactured to ARP's exacting specifications with post-heat-treat thread rolling.

Superior Manufacturing Process:

• Forged in-house using premium quality materials for consistent performance
• Heat-treated on special vertical racks ensuring complete 360-degree penetration
• Threads rolled after heat-treat to provide up to 10 times longer fatigue strength
• Precision CNC-machined to exacting tolerances for perfect fitment
• Each bolt proudly stamped with the ARP name as assurance of quality

Wave-Loc Technology (if applicable):

• Patented Wave-Loc surface contacts rod and cap for optimum alignment and reduced fluctuating stress
• Provides interference fit range of .001 to .005 inches to accommodate OEM rod bolt hole tolerances
• Superior material grain flow compared to knurled designs that create stress risers
• Eliminates galling and scoring through smooth contact surface

Critical Installation Note:

Monitor bolt stretch regularly and replace any bolt that has permanently elongated by .0005 inches or more. Proper installation with ARP Ultra-Torque fastener assembly lubricant is essential for achieving specified clamp loads and maximizing service life.

Testing has demonstrated that ARP rod bolts deliver ten times the fatigue strength of competing fasteners, making them the cost-effective choice for builders who demand reliability without compromise. This complete kit includes everything needed for your connecting rod assembly.