Eaton Truetrac Ford 9 inch Differential | 31 spline SKU: 8751

Eaton Truetrac Differential | Ford 9 Inch | 31 Spline Limited Slip

Put real traction to the ground with the Eaton Truetrac differential for Ford 9-inch housings with 31 spline axles. Built for strength and smooth operation, this gear-driven limited slip delivers consistent power to both wheels without the harsh engagement of a locker—making it a solid choice for both street-driven Broncos and off-road builds.

Whether you're upgrading to 31-spline axles or building a stronger rear end from the ground up, the Truetrac offers reliable performance with no clutches to wear out and no maintenance required.

• Fits Ford 9" Differential – Designed for 9-inch housings with 31 spline axles

• 31 Spline Compatibility – Ideal for upgraded duty axle shafts

• Gear-Driven Limited Slip – Smooth, automatic torque biasing with no clutches

• Improved Traction – Sends power to both wheels for better grip on and off-road

• Maintenance-Free Design – No friction plates or special additives required

• Street & Trail Friendly – Quiet operation with predictable handling

The Eaton Truetrac uses a helical gear design to automatically distribute torque where it’s needed most. Unlike traditional limited slips, it requires no clutch packs or rebuild intervals, making it a long-lasting solution for performance and reliability.

This makes it a strong option for Broncos and trucks that see mixed use—whether you're cruising pavement, running dirt roads, or tackling more technical terrain.

Upgrade your Ford 9-inch rear end with a differential that delivers smooth traction, reliable performance, and the strength to match your truck or Bronco build.