3.21 Ratio Posi Limited Slip Differential

The Zumbrota Drivetrain RAA435-1890A-P is a remanufactured axle assembly specifically designed for Chrysler 8.25-inch differentials, featuring a 3.21 gear ratio and a Posi Limited Slip Differential. This assembly is rebuilt to meet stringent quality standards, ensuring precision and reliability. During the remanufacturing process, each axle assembly is meticulously inspected for straightness, cracks, and surface wear. All internal components, including ring and pinions, internal gears, clutches, and carriers, are fully inspected and tested. To ensure optimal performance and longevity, all bearings and seals are replaced. The gears are examined for proper tooth contact patterns and set to correct rolling torque using precise inch-pound measurements. Correct gear backlash is established to promote proper gear lubrication and quiet operation, while axle tubes are verified to meet OEM standards for straightness. Zumbrota employs an exclusive hydro-blast rinse and sandblasting procedure, followed by a proprietary shot-enticed deep cleaning process on both internal and external parts. This advanced cleaning method sets a high standard for axle assembly remanufacturing. This particular assembly has a 3.21 gear ratio and a Posi Traction limited-slip differential, with a round cover and a semi-floating axle type. The cover is included, but fluid is not. This unit is also identified by Hollander No. 435-189A-P. This axle assembly is intended for 1997-1999 Dodge Dakota models with the 8.25-inch Chrysler differential and a 3.21 gear ratio. The product details explicitly mention "97-99 Dakota" and "3.21 Ratio".