Ford 9.75 4.88 Rear Axle Assembly w/ Duragrip Posi

The Zumbrota RAA435-2209X3-P is a remanufactured rear axle assembly engineered for enhanced traction, higher speeds, and improved towing capabilities in Ford 9.75 axle applications. This performance-grade assembly is built to exceed the demands of larger tires, higher horsepower, and heavier loads, making it a superior alternative to OE replacements when your driving lifestyle requires more. Each axle assembly undergoes a rigorous remanufacturing process. Zumbrota performs thorough inspections for housing straightness, cracks, and surface wear. All internal components are meticulously inspected and tested, including ring and pinions, internal gears, clutches, and carriers. Crucially, all bearings and seals are replaced, and the chosen gear set is inspected for optimal tooth contact patterns and correct rolling torque, measured in inch-pounds for precise setup and longevity. Zumbrota utilizes an exclusive hydro-blast rinse and sandblasting procedure, followed by a proprietary shot-peened deep cleaning process on both internal and external parts. This sets a high standard for remanufactured axle assemblies, ensuring precision and reliability. This specific assembly is designed for '04-'08 Ford F150 models, excluding the Heritage trim.