Remanufactured Rear Axle Assembly

The Zumbrota Drivetrain RAA435-1980B-P is a remanufactured rear axle assembly engineered for precision and reliability. This unit features a robust 10.5-inch ring gear and a 4.10 gear ratio, equipped with a Posi Limited Slip differential for enhanced traction. It is designed as a full-floating axle assembly. During the remanufacturing process, Zumbrota Drivetrain meticulously inspects each axle assembly for straightness, cracks, and surface wear. All internal components, including the ring and pinions, internal gears, clutches, and carriers, undergo thorough inspection and testing. To ensure optimal performance and longevity, all bearings and seals are replaced with new ones. The gears are carefully inspected for proper tooth contact patterns and set to correct rolling torque using inch-pound measurements. Gear backlash is precisely set to guarantee adequate gear lubrication and quiet operation. Axle tubes are also inspected to meet OEM standards for straightness. Zumbrota employs an exclusive hydro-blast rinse and sandblasting procedure on internal and external parts, followed by a proprietary shot-enticed deep cleaning process. This extensive cleaning method sets a high standard for axle assembly remanufacturing. This specific axle assembly is designed for Ford 10.5-inch ring gear applications with a 4.10 gear ratio and Posi Traction. It is intended for Single Rear Wheels (SRW) and specifically excludes Cab Chassis models. The Hollander number for this unit is 435-198B-P, and it comes with a cover but does not include fluid.