Remanufactured Rear Axle Assembly 3.73 Open Diff

The Zumbrota Drivetrain RAA435-2236 is a remanufactured rear axle assembly designed for GM 8.6-inch differentials. This unit comes equipped with a 3.73 open differential and is built to precise specifications. Each assembly undergoes rigorous inspection and refurbishment. All tubes are straightened to OEM standards, and housings are tested for cracks and wear. Internal components, including ring and pinion gears, internal gears, clutches, and carriers, are 100% inspected. Bearings, seals, crush sleeves, pinion nuts, and shims are replaced to ensure longevity and correct setup with precision torque measurements. The RAA435-2236 is specifically designed for the 2004 GM Silverado and Sierra 1500 Extended Cab models. It features a 3.73 gear ratio and an open differential. Key technical notes include a pinion yoke that retains U-joint caps without internal snap rings, a specific Spring Special Option B2E, and Ratio Option GT4. This assembly is not compatible with Quadrasteer systems. It does not include hubs, brakes, backing plates, or axle shafts. Zumbrota Drivetrain emphasizes quality in their remanufacturing process, ensuring that all components are restored to OEM specifications for reliability and performance.