10.5-Inch 3.73 Posi Traction Rear Differential Assembly

The Zumbrota Drivetrain RAA435-229A-P is a remanufactured rear differential assembly meticulously rebuilt to the highest quality standards for precision and reliability. This unit is specifically designed for 2005-2007 Ford F-350 Super Duty trucks equipped with dual rear wheels and full-floating axles, featuring a 10.5-inch ring gear and a 3.73 ratio with Posi Traction. During the remanufacturing process, all axle assemblies are thoroughly inspected for straightness, cracks, and surface wear. Internal components, including ring and pinions, gears, clutches, and carriers, undergo a complete inspection and testing. All bearings, seals, crush sleeves, pinion nuts, and shims are replaced with new parts. The housings are cleaned using an exclusive hydro-blast rinse and sandblasting procedure, followed by a proprietary shot-enticed deep cleaning, ensuring a finish that meets OEM specifications and sets a high standard for axle assembly remanufacturing. Each differential is tested for optimal tooth contact patterns and correct rolling torque, established using inch-pound measurements for precise setup and longevity. Gear backlash is set to ensure proper lubrication and quiet operation. Please note that this assembly does not include hubs, brakes, backing plates, or axle shafts.