Spicer Front Axle Outer Vacuum Seal & Greasable U-Joint Overhaul Kit for Ford F-250 & F-350 (Dana 50/60, 1998-2004, Single Side)

Refresh a binding front steering knuckle, stop stubborn gear oil leaks, and restore your automatic 4WD performance with this genuine Spicer Front Axle Outer Vacuum Seal and Greasable U-Joint Overhaul Kit. Specially compiled to service a single side (fits left or right) of leaf-sprung 1998–2004 Ford F-250 and F-350 Super Duty trucks (as well as 2000–2005 Ford Excursion models) equipped with a monobeam Dana 50 or Dana 60 front axle, this premium maintenance package delivers original equipment quality to completely overhaul your front wheel end.

The outer wheel ends on early Super Duty platforms are notorious for vacuum leaks. The factory Pulse Vacuum Hub (PVH) system relies entirely on a sequence of tight rubber seals to engage the automatic locking hubs from the dashboard. Over time, road salt, mud, and continuous thermal cycling dry out the massive main outer knuckle seal, leading to automatic 4WD failure and allowing trail debris to contaminate the axle tubes. Additionally, dry front axle u-joints will cause steering wheel feedback, popping sounds during tight turns, and severe drivetrain vibrations.

This service-ready bundle eliminates the guesswork of sourcing loose components by matching a premium Spicer greasable universal joint with a complete, heavy-duty replacement seal sequence. Upgrading to the greasable u-joint design features an integrated zerk fitting, allowing you to easily flush away trail dust, mud, and road salt during routine oil changes to maximize drivetrain longevity.

Kit Highlights:

• Targeted Single-Side Maintenance: Packages 1 premium greasable front universal joint, 1 massive main outer knuckle vacuum seal, 1 inner axle tube oil seal, and the supporting hub assembly o-rings to fully overhaul one steering knuckle assembly.

• Greasable Drivetrain Upgrade: Features a rugged universal joint equipped with an integrated lubrication fitting, facilitating fast preventative maintenance to protect your needle bearings against water intrusion.

• Genuine Spicer OEM Quality: Every seal and joint is manufactured to strict original equipment structural and dimensional tolerances, guaranteeing a reliable mechanical press-fit and a lasting pneumatic seal.

• Restores Factory Automatic 4WD: Replaces the critical, multi-lip outer hub vacuum seal to re-establish the strict air pressure retention required for error-free automatic front hub locking.

Vehicle & Axle Fitment:

• Make: Ford

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

• Years: Trucks: 1998, 1999, 2000, 2001, 2002, 2003, 2004 | Excursion: 2000, 2001, 2002, 2003, 2004, 2005

• Axle Profile: Front Monobeam Dana 50 & Dana 60 (Leaf Spring Front Suspension Configurations Only)

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