{"product_id":"9-75-inch-front-axle-assembly-3-31-posi-limited-slip","title":"9.75-inch Front Axle Assembly 3.31 Posi Limited Slip","description":"The Zumbrota Drivetrain RAA435-1906B-P is a remanufactured axle assembly specifically engineered for 1998 and 1999 Ford Expedition models. This unit features a robust 9.75-inch semi-floating axle with a 3.31 gear ratio and a Posi Limited Slip differential, offering enhanced traction and performance.\n\nEach Zumbrota axle assembly is rebuilt to exacting quality standards. The process includes thorough inspection of all components for straightness, cracks, and wear. Internal parts such as ring and pinions, gears, clutches, and carriers undergo comprehensive inspection and testing. Crucially, all bearings, seals, crush sleeves, pinion nuts, and shims are replaced with new parts. The gears are meticulously inspected for optimal tooth contact patterns, and correct rolling torque is established using inch-pound measurements to ensure precise setup and long-term durability. Proper gear backlash is set to guarantee adequate gear lubrication and quiet operation, while axle tubes are inspected and straightened to OEM specifications.\n\nZumbrota employs a proprietary cleaning process that includes hydro-blasting and sandblasting, followed by a deep cleaning method. This ensures that all housings are returned to an OEM finish, setting a high standard for remanufactured axle assemblies. The differential type is Posi Limited Slip, and the gear ratio is 3.31. This assembly includes the differential cover, but does not come with differential fluid.","brand":"Zumbrota Drivetrain","offers":[{"title":"Default Title","offer_id":52870794412344,"sku":"RAA435-1906B-P","price":1923.89,"currency_code":"USD","in_stock":true}],"url":"https:\/\/store.motormia.co\/products\/9-75-inch-front-axle-assembly-3-31-posi-limited-slip","provider":"MOTORMIA","version":"1.0","type":"link"}