Remanufactured Rear Axle Assembly with Posi Traction

The Zumbrota Drivetrain RAA435-2021D-P is a meticulously remanufactured axle assembly engineered to restore the performance and reliability of your 2000-2004 Ford F-150. Featuring a robust 9.75-inch ring gear diameter and a 3.55 gear ratio, this unit is specifically designed for F-150 models equipped with rear disc brakes and a Posi Limited Slip Differential (LSD). The "Check Tag" notation indicates the importance of verifying the vehicle's original axle tag for precise compatibility. Zumbrota Drivetrain's commitment to quality is evident in their comprehensive remanufacturing process. Each axle assembly is rigorously inspected for structural integrity, including checking for straightness, cracks, and surface wear on axle tubes. Internally, all components, such as ring and pinions, gears, clutches, and carriers, are thoroughly inspected and tested. Crucially, all bearings and seals are replaced with new parts, and the gears are meticulously set up to ensure optimal tooth contact patterns, correct rolling torque, and precise backlash for longevity and quiet operation. The remanufacturing process involves an exclusive hydro-blast rinse and sandblasting, followed by a proprietary shot-peened deep cleaning procedure, setting a high standard for axle assembly remanufacturing. Key specifications include a semi-floating axle type, 14 MM wheel studs, and wheel bearings with a 2.533-inch outer diameter. The differential cover is included with this assembly, though fluid is not provided, and the fluid capacity is 3.5 quarts. Mounting hardware is also not included. This specific axle assembly is identified by HOLLANDER No. 435-221D-P and is built with Ford components. It is crucial to verify your vehicle's "Check Tag" to ensure correct fitment, as variations can exist within the 2000-2004 F-150 model range.