Dana 80 4.30 Posi Limited Slip Differential Assembly

The Zumbrota Drivetrain RAA435-204J-P is a remanufactured axle assembly specifically for the Dana 80 axle. This unit is designed for Dual Rear Wheel (DRW) Cab Chassis configurations and features a 4.30 gear ratio with Posi Limited Slip Differential (LSD) for enhanced traction. Zumbrota Drivetrain rebuilds each axle assembly to stringent quality standards, ensuring precision and reliability. The remanufacturing process includes thorough inspection of all internal components—ring and pinions, internal gears, clutches, and carriers—for wear and damage. All bearings and seals are replaced. Critical gear settings, including optimal tooth contact patterns, rolling torque (measured in inch-pounds), and backlash, are precisely adjusted to guarantee proper gear lubrication, quiet operation, and longevity. Axle tubes are verified to meet OEM straightness standards. Zumbrota utilizes an exclusive internal and external parts cleaning procedure that involves hydro-blast rinsing and sandblasting, followed by a proprietary shot-peened deep cleaning process. This meticulous approach sets a high standard for remanufactured axle assemblies. The assembly includes a cover, but does not come with fluid.