3.73 Posi Limited Slip Differential Assembly

The Zumbrota Drivetrain RAA435-1661B is a remanufactured complete axle assembly designed for GM 14 Bolt trucks from 1990 to 2000. This unit is specifically configured for 2WD, Single Rear Wheel (SRW) models and includes a Posi Limited Slip Differential (LSD) with a 3.73 gear ratio. It is built to the highest standards of precision and reliability. Each axle assembly is meticulously inspected for straightness, cracks, and surface wear. Internally, all components, including the ring and pinion gears, internal gears, clutches, and carriers, are fully inspected and tested. To ensure optimal performance and durability, all bearings and seals are replaced. The gears are precisely set for ideal tooth contact patterns, correct rolling torque measured in inch-pounds, and proper backlash, which contributes to quiet operation and extended lifespan. Zumbrota Drivetrain utilizes an exclusive cleaning process that includes hydro-blast rinsing and sandblasting for both internal and external parts, followed by a proprietary shot-enticed deep cleaning. This rigorous remanufacturing process ensures that the axle housings meet OEM standards for straightness and are free from surface wear and cracks.