Ford 9-inch Track Lock with Overhaul Kit & 31-Spline Axles, 78-79 Ford Bronco SKU: 798599

Ford 9-inch Track Lock with Overhaul Kit & 31-Spline Axles | 1978-79 Ford Bronco

Upgrade your 1978-79 Ford Bronco rear end with this complete Track Lock differential kit built for 31-spline Ford 9-inch axles. Designed specifically for the full-size Ford Bronco, this setup delivers improved traction, strength, and reliability on and off the trail. With a fully assembled clutch-driven Track Lock, heavy-duty axles, a full rebuild kit, and axle seals included, you’re getting everything needed for a true drivetrain overhaul—no press work or hunting for extra parts.

Kit Includes:

• Ford 9-inch Track Lock Differential (31-spline, clutch-driven, fully assembled)

• Pair of Heavy-Duty 31-Spline Axle Shafts with pre-installed bearings, retainers, and studs

• Third Member Overhaul Kit with bearings, races, shims, gasket, gear marking compound, ring gear bolts, and seal

• Rear Axle Housing Seals

• Complete Rear-End Overhaul: Includes differential, axles, rebuild kit, and seals—everything you need for a full 31-spline upgrade

• Clutch-Driven Positraction: Ford 9-inch Track Lock delivers consistent traction by sending power to both wheels under load while maintaining street drivability

• Heavy-Duty 31-Spline Axles: Made from higher-grade materials than stock, fully assembled and ready to bolt in—no press required

• Precision Rebuild Kit: Full third member kit includes differential/pinion bearings, shims, ring gear bolts, seal, gasket, and gear compound

Additional Info

• Fitment: 1978-79 Ford Bronco

• Install Notes: Axles are bolt-in ready with pre-installed bearings and studs. Track Lock differential drops into a standard 9-inch case. Overhaul kit includes all components needed for a complete third member rebuild. Professional installation is recommended.

No more guessing or piecing together parts - this Track Lock & Axle Kit gives you everything needed to build a tough, reliable rear end for your 78-79 Bronco.