3.31 Posi Limited Slip Differential

The Zumbrota Drivetrain RAA435-1982C-P is a remanufactured axle assembly engineered for 10.25" Ford F250 vehicles manufactured between 1997 and 1999. This unit features a 3.31 gear ratio and a Posi Limited Slip Differential, designed to enhance traction and performance. Each axle assembly is meticulously rebuilt to stringent quality standards. The remanufacturing process involves a complete inspection of the housing for straightness, cracks, and surface wear, alongside a 100% inspection of all internal components including the ring and pinion, internal gears, clutches, and carriers. Critical wear items such as bearings, seals, crush sleeves, pinion nuts, and shims are replaced with new parts. Precise setup is ensured by setting correct gear backlash and establishing rolling torque using inch-pound measurements, which contribute to longevity and quiet operation. Zumbrota employs an advanced cleaning procedure, utilizing hydro-blasting and sandblasting followed by a proprietary shot-enticed deep cleaning process. This ensures that all housings are restored to OEM finish and standards before reassembly. The axle type is semi-floating, and the unit includes a cover but does not include fluid. This specific model is for 1997-1999 Ford F250 trucks equipped with disc brakes. It is important to note that this item is special ordered and may have cancellation or return restrictions.