ARP 200-6023 Connecting Rod Bolt Kit for Manley/Elgin Rods

The ARP 200-6023 is a high-performance connecting rod bolt kit designed as a direct replacement for Manley and Elgin connecting rods. Manufactured from ARP's proven 8740 chrome moly steel, this 2-piece bolt kit includes washers and delivers the reliability and fatigue strength that serious engine builders demand.

Why ARP Rod Bolts Are Superior:

The connecting rod bolt is the weakest link in any connecting rod assembly, which is why many aftermarket rod manufacturers specify ARP bolts as original equipment. ARP rod bolts have demonstrated ten times the fatigue strength of competing fasteners in independent testing. Each bolt is proudly stamped with the ARP name as your assurance of quality and is manufactured to exacting tolerances that ensure consistent performance under extreme loads.

Key Features:

• Forged in-house at ARP using premium quality materials
• 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
• Includes washers for complete installation
• 8740 chrome moly steel with tensile strength of 180,000-210,000 psi

About 8740 Chrome Moly Material:

8740 chrome moly is a quench and temper steel that offers excellent toughness and adequate fatigue properties for most racing applications. When threads are rolled after heat treatment—standard ARP practice—this material delivers reliable performance at a cost-effective price point. It provides the ideal balance of strength and value for engines operating within normal performance parameters.

Installation and Maintenance:

It is critically important to monitor bolt stretch during use and replace any bolt that has permanently elongated by 0.0005 inch or more. Regular inspection ensures continued reliability and prevents potential failure. The most cost-effective fastener selection matches bolt strength to anticipated loads (based on piston/rod weight and engine RPM) plus an appropriate safety margin.

This kit is specifically engineered for Manley and Elgin connecting rod applications, providing the precise fit and performance characteristics required for high-performance and racing engines.