2.73 Ratio Open Differential Rear Axle Assembly

The Zumbrota Drivetrain RAA435-1215BE is a remanufactured rear axle assembly, meticulously rebuilt to exacting standards for GM 1/2 ton trucks and Suburbans. This assembly features a 10-bolt, 8.5-inch ring gear and a 2.73 gear ratio, equipped with an open differential for reliable performance. This specific unit is designed for 2WD applications and is intended for vehicles with 28-spline axles. Its fitment spans 1978 through 1987 GM 1/2 ton trucks and 1978 through 1988 GM 1/2 ton Suburbans. Zumbrota Drivetrain ensures the longevity and precision of each remanufactured axle by performing a 100% replacement of critical wear components, including all bearings, seals, crush sleeves, pinion nuts, and shims. During the remanufacturing process, all housings undergo a thorough cleaning via hydro blasting and rinsing to restore them to an OEM finish. Internal components, such as ring and pinion gears, internal gears, clutches, and carriers, are subjected to a 100% inspection. Additionally, all tubes are meticulously checked and straightened to meet OEM specifications, and correct rolling torque is established using precise inch-pound measurements for optimal setup and durability.