9.75" 4.10 6-Lug Rear Axle Assembly with Posi Limited Slip Differential

The Zumbrota Drivetrain RAA435-212K-P is a remanufactured axle assembly meticulously rebuilt for Ford F-150 models from 2012 and 2013. This unit is engineered with a substantial 9.75-inch ring gear and a 4.10 gear ratio, paired with 6-lug axles, ensuring robust performance for demanding applications. Key components of this assembly include a Posi Limited Slip Differential, providing enhanced traction and control. The remanufacturing process involves thorough inspection of all housings for surface wear and cracks, and 100% inspection of internal parts such as ring & pinions, gears, clutches, and carriers. To guarantee reliability and longevity, all bearings, seals, pinion nuts, and shims are replaced. The housing undergoes a specialized hydro-blasting and rinsing process to restore an OEM finish. Technical specifications confirm it is a Semi Floating axle type and includes the differential cover, though fluid is not supplied. It does not include hubs, brakes, backing plates, or axle shafts, indicating that these components may need to be transferred or sourced separately.