GM 8.6" 3.23 Ratio Rear Axle Assembly

The Zumbrota Drivetrain RAA435-2239A is a remanufactured axle assembly for GM 8.6" 05-07 Chevy Silverado models featuring a 3.23 gear ratio and drum brakes. This unit is meticulously rebuilt to the highest quality standards, ensuring precision and reliability. The assembly includes the cover, but not the fluid. Each axle assembly undergoes rigorous inspection processes. All tubes are straightened to OEM specifications, and housings are tested for surface wear and cracks. Internally, all components, including the ring and pinion, gears, clutches, and carriers, are 100% inspected. Key wear items such as bearings, seals, crush sleeves, pinion nuts, and shims are replaced. The housings are cleaned using a state-of-the-art hydro-blasting and rinsing process to restore them to an OEM finish. Furthermore, the correct rolling torque is established using inch-pound measurements for precise setup and longevity, with correct gear backlash set to ensure proper lubrication and quiet operation. This remanufactured axle assembly is compatible with Chevrolet Silverado 1500 (2005-2006), Chevrolet Silverado 1500 HD (2005-2006), and GMC Sierra 1500 SLE (2005-2006) models. Specific fitment details include a 3.23 ratio, GM 10 Bolt 8.6 Inch Ring Gear, 6 Lug Axle, and Drum Rear Brake Option JF3. It is crucial to confirm fitment with your specific vehicle details before purchase. This item is built to order and may have specific cancellation or return restrictions as per the seller's terms and conditions.