8.5" AXLE ASSY 88-99 GM K1500; 4.10

This Remanufactured Axle Assembly (RAA435-1513CL-P) from Zumbrota Drivetrain (Yukon Gear & Axle) is designed for GM 8.5" rear ends. It features a 4.10 gear ratio and a Posi-traction differential for improved traction. Each assembly undergoes a thorough inspection for straightness, cracks, and surface wear, with all internal components, including ring & pinions, internal gears, clutches, and carriers, being fully inspected and tested. All bearings and seals are replaced, and gears are meticulously inspected for optimal tooth contact patterns and correct rolling torque to ensure precise setup and longevity. The axle tubes are also inspected to ensure OEM standards of straightness, and the parts are cleaned using a hydro-blast rinse, sandblasting, and a proprietary shot-enticed deep cleaning process.