3.42 Posi Limited Slip Differential Assembly

The Zumbrota Drivetrain RAA435-1653A is a remanufactured complete axle assembly, specifically designed as a direct replacement for 1990-2000 GM 3500 series Single Rear Wheel (SRW) pickup trucks. This unit features a 3.42 gear ratio and a Posi Limited Slip Differential (LSD), offering enhanced traction and performance. Zumbrota Drivetrain emphasizes the quality and reliability of its remanufactured axle assemblies. Each unit undergoes a rigorous inspection process. This includes checking axle tubes for straightness and testing housings for surface wear and cracks. Internally, all components such as ring and pinions, gears, clutches, and carriers are fully inspected and tested. Crucially, all bearings, seals, crush sleeves, pinion nuts, and shims are replaced with new parts to ensure longevity and proper function. The gear backlash is precisely set for optimal lubrication and quiet operation, with rolling torque established using inch-pound measurements for accurate setup. Zumbrota utilizes an exclusive cleaning process involving hydro-blasting, rinsing, and sandblasting, followed by a proprietary shot-peened deep cleaning. This comprehensive remanufacturing procedure ensures that the axle assembly meets stringent OEM standards and delivers reliable performance.