8.6" Axle Assembly w/ 4.11 Ratio Drum Brakes Posi Limited Slip

The Zumbrota Drivetrain RAA435-2239D-P is a remanufactured complete axle assembly designed for GM 8.6" axles. This unit comes equipped with a 4.11 gear ratio, drum brakes, and a Posi Limited Slip Differential, ensuring enhanced traction and performance. Each axle assembly is meticulously rebuilt to the highest quality standards for precision and reliability. Zumbrota Drivetrain thoroughly inspects all internal components, including ring and pinions, internal gears, clutches, and carriers. All bearings and seals are replaced, and gears are examined for optimal tooth contact patterns and correct rolling torque. The assembly also ensures correct gear backlash for proper lubrication and quiet operation, and axle tubes are inspected for OEM straightness. Zumbrota employs an exclusive hydro-blast rinse and sandblasting procedure, followed by a proprietary shot-enticed deep cleaning process on both internal and external parts. This rigorous cleaning method sets a high standard for axle assembly remanufacturing, ensuring a like-new finish and optimal performance. The assembly includes the replacement of bearings, seals, crush sleeves, pinion nuts, and shims.