GM 8.6-Inch 4.10 Posi Differential Case

The Zumbrota Drivetrain RAA435-208D-P is a remanufactured rear axle assembly meticulously rebuilt to the highest quality standards for precision and reliability. This specific unit is designed for the 2009 GMC 1500, featuring a GM 8.6-inch ring gear diameter and a 4.10 gear ratio with a Posi (Limited Slip Differential). Zumbrota's remanufacturing process involves a 100% inspection of all internal parts, including the ring and pinion, internal gears, clutches, and carrier. Furthermore, all bearings, seals, crush sleeves, pinion nuts, and shims are replaced with new components. The housing undergoes a state-of-the-art hydro-blasting and rinsing process, restoring it to an OEM finish, and all tubes are inspected to ensure they meet OEM specifications for straightness. The assembly is set to correct rolling torque using inch-pound measurements for optimal setup and longevity, and proper gear backlash is established to ensure quiet operation and correct gear lubrication. Note that this offering is for the assembly only; axles are not included.