Yukon Gear & Axle Ford Trac-Loc Limited Slip Differential Spline

The Yukon Gear & Axle Ford Trac-Loc limited slip differential (also called a positraction or posi unit) improves traction and durability in Ford axle applications. A limited slip differential uses clutches to keep the wheels working together. It sends more torque to the tire with the best grip and less to the tire that is slipping. This helps on wet roads, loose surfaces, and during hard acceleration.

Key Features:

• Limited slip design with composite clutches for controlled, consistent engagement
• Forged 4320 chromoly spider gears for strength and durability
• High-strength nodular iron case
• Fully rebuildable design, assembled in the USA
• Gears cut to provide strong teeth for demanding use
• Works with all gear ratios
• Available in street (smooth) and aggressive designs, with different preload spring configurations and pinion layouts depending on the version
• Backed by extensive product testing and software-based design

Installation and Maintenance Notes: Yukon recommends high-grade non-synthetic GL-5 gear oil with Yukon limited slip additive (part number OILADD). This helps the unit last longer and run smoothly. Some versions need specific carrier bearings, races, and ring gear bolts. Check the details for the version you choose.

Choose the correct spline count and Ford axle version for your build. Yukon Gear & Axle makes these differentials for daily drivers, trucks, and performance and off-road builds.