Dorman Locking Hub (MPN: 600-203XD)

Enhanced durability and performance for Ford and Lincoln vehicles. The Dorman Locking Hub is designed as an OE replacement for the original 4WD locking hub found in select Ford and Lincoln SUVs and pickups. This product addresses common failures associated with the factory design, particularly the brittle sintered shift dial and the rubber diaphragm that can deteriorate over time. With a reinforced shift dial that is 40 percent stronger than the original, this locking hub significantly reduces the risk of breakage under torque stress. Constructed with upgraded materials, the Dorman Locking Hub features an improved diaphragm made from HNBR rubber, which includes anti-ozone, anti-oxidation, and UV-resistant additives. This enhancement ensures greater durability and longevity, making it a reliable choice for maintaining 4WD functionality. The design has been rigorously tested through more than 15 performance evaluations, including assessments for salt spray corrosion, extreme cold, thermal cycling, and vacuum durability. Quality assurance is a priority, with the Dorman Locking Hub backed by a team of product experts in the United States and over a century of automotive experience. This locking hub is available as a single unit and is compatible with both 30 and 55 spline configurations, making it a versatile option for various applications. Features Improved Design - This 4WD Locking Hub Has A Reinforced Shift Dial That Can Withstand 40 Percent More Torque Force Than The Factory Design To Help Prevent It From Breaking In The Future Upgraded Materials - Features An Improved Diaphragm Made Of HNBR Rubber With Anti-Ozone, Anti-Oxidation And UV-Resistant Additives For Greater Durability Rigorously Tested - This Design Has Undergone More Than 15 Performance Tests, Including Tests For Salt Spray Corrosion, Extreme Cold Durability, Thermal Cycling, And Vacuum Durability Quality Assured - Backed By A Team Of Product Experts In The United States And More Than A Century Of Automotive Experience Specifications Manufacturer: Dorman Manufacturer Part Number: 600-203XD Type: Automatic Axle Type: OEM Axle Outside Diameter (IN): OEM Spline Count: 30 Or 55 Bolt Circle: OEM Finish: OEM Color: Silver/ Black Material: Metal Dial Color: White Dial Material: Plastic Quantity: Single Estimated Install Time (Hours): 1 Compatibility / Fit 2000-2005 Ford Excursion 2001-2002 Ford Expedition 1999-2004 Ford F-250 Super Duty 1999-2004 Ford F-350 Super Duty 1999-2004 Ford F-450 Super Duty 1999-2004 Ford F-550 Super Duty 2001-2002 Lincoln Navigator Product Videos