ARP 200-6225 Connecting Rod Bolt Kit ARP2000 Pro Series Lentz Replacement

The ARP 200-6225 is a high-performance connecting rod bolt kit designed as a direct replacement for Lentz connecting rods. This 2-piece kit features ARP's renowned ARP2000 Pro Series material, delivering superior strength and reliability for demanding racing applications. These bolts are supplied without washers and are engineered to handle the extreme loads encountered in high-performance engines.

ARP2000 Material Advantages:

ARP2000 is an advanced alloy steel capable of achieving a clamp load at 220,000 psi, significantly exceeding the capabilities of standard 8740 chrome moly. This material is widely used in short track and drag racing applications where reliable performance is critical. ARP2000 provides excellent resistance to stress corrosion and hydrogen embrittlement when properly installed and maintained.

Superior Manufacturing Process:

• Forged in-house using premium quality materials for consistent strength
• Heat-treated using specialized vertical racks ensuring complete 360-degree penetration
• Threads rolled after heat-treatment to provide up to 10 times longer fatigue life
• Precision CNC-machined to exacting tolerances for perfect fit
• Application-specific design optimized for Lentz connecting rods

Performance Features:

• Superior fatigue strength—testing shows ARP rod bolts have 10 times the fatigue resistance of competing fasteners
• Optimized grain flow structure for maximum durability
• Each bolt proudly stamped with the ARP name as assurance of quality
• Designed to handle high piston/rod weights and extreme rotational speeds

Installation and Maintenance:

It is critically important to monitor bolt stretch and replace any bolt that has permanently elongated by .0005 inches or more. Regular inspection ensures continued reliability and prevents potential failures. Proper lubrication during installation is essential for achieving accurate torque values and optimal clamping force.

ARP has earned its reputation as the industry standard for connecting rod fasteners, chosen as original equipment by numerous connecting rod manufacturers worldwide. When engine reliability matters, trust the fastener that professionals rely on—ARP.