Dana 80 4.30 Posi Traction Axle Assembly

The Zumbrota Drivetrain RAA435-1987C-P is a remanufactured axle assembly built for the robust Dana 80 rear axle. It is specifically designed for 1999-2000 Ford F350 models equipped with Dual Rear Wheels (DRW) and featuring a Posi Traction (limited-slip) differential. This assembly boasts a 4.30 gear ratio and a 11.25-inch ring gear size. Zumbrota Drivetrain ensures the highest quality by meticulously inspecting all components. This includes straightening tubes to OEM specifications, testing housings for surface wear and cracks, and conducting a 100% inspection of all internal parts such as the ring and pinion, internal gears, clutches, and carrier. Critical wear items like bearings, seals, crush sleeves, pinion nuts, and shims are all replaced to guarantee longevity and performance. The remanufacturing process also includes cleaning the housings using a state-of-the-art hydro blasting and rinsing technique, restoring them to their original OEM finish. Furthermore, the correct rolling torque is established using precise inch-pound measurements, a crucial step for ensuring proper setup and extended service life. Technical notes indicate that this axle assembly is for the differential and does not include hubs, brakes, backing plates, or axle shafts. The assembly is compatible with vehicles using tag numbers F81A-AXG and F81A-AXH.