9.75-Inch 3.31 Posi Limited Slip Differential Axle Assembly

The Zumbrota Drivetrain RAA440-135A Axle Assembly is a remanufactured differential component engineered specifically for Ford Expedition models manufactured between 2007 and 2014. Each Zumbrota axle assembly undergoes a rigorous inspection and testing process to ensure its integrity. Components such as ring and pinions, internal gears, clutches, and carriers are thoroughly examined for straightness, cracks, and surface wear. To guarantee performance and longevity, all bearings and seals are replaced, and gears are inspected for optimal tooth contact patterns. The rolling torque is precisely measured using inch-pound specifications, and proper gear backlash is established for smooth operation, effective lubrication, and minimized noise and wear. Key features of this remanufactured axle assembly include shipping in high-density plastic totes to prevent transit damage, 100% inspection of all internal parts, and complete replacement of bearings, seals, crush sleeves, pinion nuts, and shims. The housings are processed through a state-of-the-art hydro blasting and rinsing procedure to restore them to an OEM finish, ensuring correct rolling torque for precision setup and durability. This axle assembly is compatible with various 4WD Ford Expedition models, including the EL Limited, EL XLT, Limited, XLT, Eddie Bauer (2007-2010), EL Eddie Bauer (2007-2010), EL King Ranch (2008-2014), King Ranch (2008-2014), Funkmaster Flex Edition (2008), EL XL (2011-2014), and XL (2011-2014). One satisfied customer reported smoother handling and quieter operation after installation, feeling confident in their vehicle's off-road capability.