Upgrade your factory MOPAR 5.7L HEMI Connecting Rods with the ARP Pro Series Rod Bolt Kit (Part #247-6301) to protect against elevated cylinder pressures and high RPM stress. Forged from high-strength ARP2000 alloy steel rated at 220,000 psi, these reusable fasteners replace weak OEM torque-to-yield hardware for superior clamping force.
The ARP Pro Series Rod Bolt Kit (#247-6301) is engineered as a direct replacement for stock 5.7L Gen 3 HEMI Connecting Rrod Bolts. Constructed from ARP2000 alloy steel and rated at 220,000 psi, these fasteners provide the fatigue resistance and clamping power needed for boosted, nitrous-fed, or cammed builds. Unlike factory single-use bolts, ARP hardware is fully reusable and precision-machined for reliability on the street or track.
Why the 5.7L Hemi Requires the 247-6301 Kit: Gen 3 Hemi engines use different connecting rod bolt dimensions depending on displacement. Standard 5.7L factory rods feature smaller bores built for 3/8" diameter fasteners, whereas 6.1L, 6.2L Hellcat, and 6.4L SRT engines use larger rods sized for 7/16" bolts (found in kit #247-6302). The larger SRT bolts will not physically fit a stock 5.7L connecting rod, making 247-6301 the mandatory choice for 5.7L applications.
Features & Specifications:
- Material: ARP2000 alloy steel (220,000 psi tensile strength)
- Fits OEM 5.7L MOPAR Gen 3 HEMI Connecting Rods (3/8" wrench diameter)
- External 12-point Head, cap screw design
- Complete engine set of 16 bolts
- Torque Spec: 45 ft-lbs using ARP Ultra-Torque Fastener Assembly Lubricant
- Recommended Stretch: .0065” – .0070”
- Machine Shop Note: Superior clamping force can slightly alter big-end journal roundness; checking and resizing rods prior to assembly is strongly recommended.
