GM 8.6" 4.10 Posi Limited Slip Rear Axle Assembly

The Zumbrota Drivetrain RAA435-208D-P is a remanufactured axle assembly designed for the 2009 GMC 1500 equipped with the GM 8.6-inch differential. This unit features a 4.10 gear ratio and a Posi Limited Slip Differential for enhanced traction. Zumbrota Drivetrain prioritizes precision and reliability in its remanufacturing process. Each axle assembly undergoes thorough inspection for straightness, cracks, and surface wear. Internal components, including ring and pinions, gears, and clutches, are meticulously checked and tested. All bearings and seals are replaced to ensure optimal performance. The gears are inspected for proper tooth contact patterns, and backlash is set precisely to ensure correct gear lubrication and quiet operation, contributing to longevity. To achieve a superior finish and internal cleanliness, Zumbrota employs an exclusive hydro-blast rinse and sandblasting procedure on both internal and external parts. This is followed by a proprietary shot-enticed deep cleaning process, setting a high standard for remanufactured axle assemblies. Key specifications include an 8.6-inch ring gear size, a 4.10 gear ratio, and a semi-floating axle type. This specific assembly is designed for models with the JL4 Active Brake Control option and includes the differential cover. It is not compatible with the Hybrid Brake Option JF3. Note that fluid is not included with this axle assembly.