Spicer Front Outer Axle Knuckle Vacuum Seal & U-Joint Kit for Ford Super Duty & Excursion (Dana 50, 1999-2004)

Refresh your truck's front-end drivetrain, stop fluid leaks, and restore reliable automatic four-wheel-drive operation with this genuine Spicer Front Outer Axle Seal and U-Joint Kit. Specially bundled for 1999–2004 Ford F-250 Super Duty, F-350 Super Duty, and Excursion models equipped with a Dana 50 front axle, this high-quality service kit contains the high-wear internal components required to overhaul a single side of your front axle assembly.

Heavy towing, commercial operations, mud, and road debris place immense stress on your vehicle's front steering knuckles and outer axle shafts. Over time, original factory universal joints can wear dry and bind up, while the critical vacuum hub seals degrade—causing vacuum leaks that prevent your automatic Pulse Vacuum Hubs (PVH) from locking into place. This premium bundle eliminates the guesswork of sourcing individual parts by replacing those worn components with trusted Spicer OEM engineering, ensuring an airtight vacuum lock, protecting your internal needle bearings, and maintaining smooth rotational performance.

Kit Highlights:

• Complete Single-Side Service: Includes one premium maintenance-free front axle universal joint along with the main outer axle shaft-to-knuckle vacuum oil seal, thrust washers, and snap rings required to completely refresh one side.

• Genuine Spicer OEM Quality: Engineered to rigorous factory specifications using high-grade steel and specialized elastomeric compounds to endure extreme loads and maximize component service life.

• Fixes Common 4WD Failures: Replaces dry, leaking factory knuckle seals to immediately restore proper vacuum pressure for reliable automatic four-wheel-drive hub engagement.

• Direct Application Fit: Mapped precisely for leaf-sprung 1999–2004 Ford Super Duty and Excursion monobeam Dana 50 front axle configurations.

Vehicle & Axle Fitment:

• Make: Ford

• Models: F-250 Super Duty / F-350 Super Duty / Excursion (4WD Models)

• Years: 1999, 2000, 2001, 2002, 2003, 2004

• Axle Profile: Front Monobeam Dana 50 (Leaf Spring Front Suspension)

• Position: Front Outer Axle Shaft / Steering Knuckle (Fits Left or Right Side - Sold Individually)