Ford 9in Ring Gear Bolt Kit .940 UHL

The Ford 9in Ring Gear Bolt Kit .940 UHL from ARP is designed for builders and enthusiasts who prioritize differential reliability in high-horsepower applications. This kit is essential for anyone upgrading a Ford 9-inch rear end in performance trucks, drag cars, or street vehicles that experience sustained torque.

Manufactured from proprietary alloy steel, the ARP bolts feature a .940-inch under-head length (UHL) specification, ensuring a precise fit in Ford 9-inch carriers. The roll-threading process used in their design enhances fatigue strength and maintains consistent clamp load across the fastener joint, preventing issues like ring gear slip and fretting corrosion.

This kit is particularly beneficial for those engaged in high-performance and modified applications, as it replaces OEM fasteners with superior materials and tighter tolerances. Installation is straightforward for experienced builders, requiring the removal of old bolts and proper torque application as per ARP documentation.