Pro Stock-Style Connecting Rod Bolt Set
Securing your engine's rotating assembly is vital when building a reliable power plant. Under the constant stress of high-RPM operation, factory rod bolts are prone to stretching, which directly leads to spun rod bearings and catastrophic connecting rod failure. These Pro Rod Bolts offer a premium, high-strength upgrade, delivering the superior clamping force and fatigue resistance required to protect your bottom end.
Engineered as a direct, drop-in replacement, they install seamlessly into factory-style connecting rods with absolutely no machining or modifications required.
Key Features & Technical Specifications
- High-RPM Protection: Specifically designed to eliminate fastener stretch and maintain precise torque specifications under heavy mechanical loads.
- Premium Reliability: Built from high-tensile fasteners, making them the strongest and most dependable replacement bolts available for factory rods.
- Direct Bolt-On: Engineered for a perfect fit inside stock-style rods without modification.
- Package Contents: Sold as a complete set of (8) rod bolts.
Fitment Note
- Stock Rods Only: This bolt set is custom-tailored strictly for standard, factory-style connecting rods.
- Aftermarket H-Beam Applications: These fasteners will not fit aftermarket performance rods. If you are building an engine with chromoly H-beam connecting rods, please see Part number: 1013216.
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By Turn 14
- 1975-1980 20R 2.2L Engines
- 1981-1995 22R 2.4L Engines
- 1983-1995 22RE 2.4L Engines
- 1985-1988 22RET 2.4L Engines
CLICK HERE to view or print the installation instructions (PDF)
Technical Specifications & Fastener Inspection
Always use ARP Ultra-Torque Fastener Assembly Lubricant (Moly Lube) to achieve accurate torque readings.
| Application/Hardware | Final Torque Value | Target Bolt Stretch |
| LC Pro Stock-Style Rod Bolts | 50 ft-lbs | .0060"-.0065" |
Fastener Inspection & Service Life Tracking
To accurately track the service life and fatigue of high-performance rod bolts, we highly recommend keeping a dedicated log of each bolt's original, un-torqued free-standing length.
- Inspection Protocol: During subsequent engine tear-downs, measure the free-standing length against the hardware's original baseline measurement.
- Replacement Criteria: If a bolt shows a permanent deformation or thread galling, it must be replaced immediately.
Installation Procedure (Without a Stretch Gauge)
If you do not have access to a precision stretch gauge, you must follow this multi-pass cycling procedure using premium Moly assembly lubricant to properly pre-stretch the fasteners.
- Lubricate & Initial Torque: With the connecting rods installed in the engine, thoroughly lubricate the hardware and torque all bolts to 50 ft-lbs.
- First Cycle: Completely loosen the fasteners, then re-torque them a second time to 50 ft-lbs.
- Final Cycle: Loosen the fasteners once more, then torque them to 50 ft-lbs a third and final time to lock in the proper clamp load.
