Spicer Front Outer Axle Stub Shaft, U-Joint & Seal Master Kit for 1999-2004 Ford Super Duty (Dana 50 / 60, Single Side)

Restore factory-spec structural integrity, eliminate severe steering knuckle binding, and refresh your automatic locking hub vacuum boundaries with this genuine Spicer Front Outer Axle Stub Shaft, U-Joint & Seal Master Kit. Specially bundled to provide a seamless overhaul for 1999–2004 Ford F-250 and F-350 Super Duty trucks, this single-side package replaces a compromised outer axle shaft while upgrading your primary wear components.

On solid-axle Ford platforms, the outer stub shaft and universal joint endure massive torsional loads under heavy towing, commercial use, or when running oversized off-road tires. Over high mileage, or following a catastrophic universal joint failure, the axle shaft's yoke ears can easily twist, stretch, or crack, making it impossible to seat snap rings securely. Concurrently, the massive main knuckle seal dry-rots, causing an immediate vacuum drop that completely disables your dashboard-controlled Electronic Shift-on-the-Fly (ESOF) automatic locking hubs.

This original equipment manufacturer (OEM) master service package supplies everything needed to overhaul one complete front steering knuckle station. Sourcing genuine Spicer components guarantees exact factory-matched spline engagement, precise rubber durometer elasticities, and high-strength solid-cross universal joints engineered to handle high-torque demands without premature shearing.

Kit Contents (Services One Steering Knuckle Side):

• (1) Genuine Spicer 30-Spline Outer Axle Stub Shaft (Part # 47750 / 2002638)

• (1) Premium Spicer Life Series (SPL55-3X) Solid-Body Front Axle U-Joint (Non-Greasable)

• (1) High-Integrity Main Outer Axle Shaft to Knuckle Vacuum Seal (Part # 50491 / 2023068)

• (1) Updated Outer Wheel Hub Vacuum O-Ring (Part # 41766 / 701114)

• (1) Front Axle Tube Outer Dust Boot Seal (Part # 50381)

Kit Highlights:

• Complete Wheel End Solution: Combines a brand-new outer stub shaft, a premium solid-cross universal joint, and all necessary vacuum-actuated hub seals to completely rebuild one front wheel station.

• Restores Automatic 4WD Operation: Includes the critical large-diameter main knuckle seal and hub O-ring to completely secure your vacuum environment, bringing your dashboard 4WD controls back to life.

• Genuine Spicer OEM Quality: Forged and precision-machined by the vehicle's original equipment axle supplier to guarantee perfect structural metallurgy and exact dimensional alignment.

• Solid-Body U-Joint Strength: Features an SPL55 series universal joint forged without internal grease channels to optimize cross-sectional density, minimizing trail shearing under extreme stress.

Vehicle & Axle Fitment:

• Axle Profiles: Open-Knuckle Solid/Monobeam Front Axles: Dana 50 and Dana 60 configurations with vacuum-operated automatic locking hubs.

• Ford Models: 1999, 2000, 2001, 2002, 2003, and 2004 Ford F-250 Super Duty and F-350 Super Duty 4WD trucks, alongside 2000–2005 Ford Excursion 4x4 vehicles.

• Position: Front Steering Knuckle Station (Fits Left or Right Side — Sold Individually)