ARP 135-6003 Connecting Rod Bolt Kit Chrome Moly - 8740

The ARP 135-6003 is a high-performance connecting rod bolt kit manufactured from premium 8740 chrome moly steel. Designed to eliminate the weakest link in connecting rod assemblies, these bolts deliver superior fatigue strength and reliability for racing and high-performance applications. Each bolt is proudly stamped with the ARP name as assurance of quality.

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 for optimal fit
• Complete bolt kit ready for installation

Wave-Loc Technology:

• Wave-Loc surface contacts rod and cap for optimum alignment and reduced fluctuating stress
• Provides interference fit ranging from .001 to .005 inches for all OEM connecting rods
• Superior material grain flow compared to knurled bolts that create stress risers
• Virtually eliminates galling and scoring through smooth contact surface
• Accommodates wide range of factory rod bolt hole tolerances

Material Specifications:

8740 chrome moly is a quench and temper steel delivering tensile strengths between 180,000 and 210,000 psi. This proven material offers excellent toughness with adequate fatigue properties for most racing applications. ARP's post-heat-treat thread rolling process significantly enhances fatigue life compared to competitor fasteners.

Important Installation Note: Monitor bolt stretch regularly and replace any bolt that has permanently elongated by .0005 inches to maintain optimal clamping force and reliability.