ARP 200-6209 ARP2000 Rod Bolt Kit 3/8in. Thread 1.600 in. UHL General Replacemet

Vehicle Fitment

• Universal - general replacement connecting rod bolt for aftermarket connecting rods using 3/8 in. thread x 1.600 in. UHL cap screw bolt pattern; verify exact fitment with your connecting rod manufacturer before ordering

Fitment Notes

• This is a general replacement rod bolt - fitment is determined by the connecting rod, not the vehicle; confirm your connecting rod uses 3/8 in. thread x 1.600 in. UHL cap screw bolts before ordering
• ARP recommends verifying stretch and torque values with the connecting rod manufacturer for your specific rod and bolt combination
• General stretch spec: 0.0055-0.0060 in.; general torque spec: 55 ft-lbs using ARP Ultra-Torque lubricant - these are guides only; always follow the rod manufacturer's specifications
• Nuts are not included - cap screw design seats directly without a separate nut
• Sold as a set of 8 - covers one complete 4-cylinder engine or one bank of a V8

Features

• Made from ARP2000 alloy, rated at 200,000 psi tensile strength - significantly stronger than 8740 chromoly and OEM connecting rod hardware
• Precision CNC-machined to exacting specifications for consistent dimensional accuracy across all 8 bolts in the set
• Threads rolled after heat treatment for up to 10 times longer fatigue strength compared to bolts threaded before heat treating
• Heat treated using vertical racks to ensure complete 360-degree heat penetration for uniform material hardness
• Cap screw (E-head) design - seats directly into the rod cap without a separate nut for a cleaner, more precise installation
• Reusable within spec - check bolt stretch at each teardown to confirm the bolt has not been stressed beyond its service limit

Specifications

• Part Number: 200-6209
• Material: ARP2000 Alloy
• Tensile Strength: 200,000 psi
• Thread Size: 3/8 in.
• Underhead Length (UHL): 1.600 in.
• Thread Length: 0.600 in.
• Grip Length: 0.145 in.
• Head Height: 0.388 in.
• Collar Diameter: 0.555 in.
• Socket Size: 7/16 in. 12-Point
• Head Style: E (Cap Screw)
• Stretch Spec: 0.0055-0.0060 in. (general guide)
• Torque Spec: 55 ft-lbs with ARP Ultra-Torque (general guide)
• Nuts Included: No
• Quantity: Set of 8

Included Components

• 8x ARP2000 Alloy 3/8 in. x 1.600 in. UHL Cap Screw Connecting Rod Bolts
• Note: Nuts not included - cap screw design

Product Description

The ARP 200-6209 is a Pro Series replacement connecting rod bolt kit made from ARP2000 alloy, rated at 200,000 psi tensile strength. It is a general replacement kit sized for aftermarket connecting rods using a 3/8 in. thread x 1.600 in. UHL cap screw bolt pattern - one of the most common rod bolt specifications used across a wide range of performance and racing connecting rods. ARP2000 delivers approximately 40% more tensile strength than standard 8740 chromoly, making it the correct choice for high-RPM, high-boost, and forced induction engine builds where rod bolt fatigue is a critical concern.

Connecting rod bolts are the most critically loaded fasteners in any engine. At high RPM, the big end of the rod cycles between extreme tension and compression loads on every revolution, making thread fatigue the primary failure mode. ARP's thread-after-heat-treat process creates threads with up to 10 times more fatigue life than bolts manufactured to conventional standards. This set of 8 covers one complete 4-cylinder engine or one bank of a V8. Always verify the correct stretch and torque specifications with your connecting rod manufacturer - the general values provided are a starting guide only.