Remanufactured Rear Axle Assembly 11.5-Inch 3.73 Ratio

The Zumbrota Drivetrain RAA435-2087A-35 is a remanufactured rear axle assembly built to exacting standards for 2001-2007 GM 3500 Dual Rear Wheel (DRW) trucks. This axle assembly features the robust AAM 11.5-inch ring gear and a 3.73 gear ratio, specifically Option GT4, ensuring optimal performance for heavy-duty applications. It is designed for vehicles equipped with automatic or 5-speed manual transmissions, including those with the JH7 brake option. Importantly, this unit is configured without Posi Traction and is not compatible with the ML6 6-speed manual transmission option. The yoke accommodates a 1485 series U-joint with a 35mm cap diameter. Zumbrota Drivetrain emphasizes quality in their remanufacturing process. All housings undergo a state-of-the-art hydro blasting and rinsing treatment to restore them to an OEM finish. The assembly includes a 100% replacement of all bearings, seals, crush sleeves, pinion nuts, and shims. Furthermore, every internal component, including ring and pinion gears, internal gears, clutches, and carriers, is subjected to 100% inspection. Housings are tested for surface wear and cracks, and all tubes are inspected and straightened to OEM specifications. The rolling torque is precisely established using inch-pound measurements for setup accuracy and longevity.