Spicer Front Outer Axle Stub Shafts & Master Vacuum Seal Kit for Ford F-250 & F-350 (Dana 50/60, 1998-2004, Both Sides)

Completely rebuild both front wheel ends, fix failing automatic 4WD engagement, and replace worn outer yokes simultaneously with this genuine Spicer Front Outer Axle Stub Shaft and Master Seal Overhaul Package. Specially compiled for 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 comprehensive master drivetrain bundle services both the driver and passenger sides.

The outer stub shafts on early Super Duty platforms endure severe load stresses from towing, commercial hauling, and off-road trail use. Over time, original outer shafts can micro-fracture or develop deep grooves where the main knuckle seals ride. When these surfaces degrade, the factory Pulse Vacuum Hub (PVH) system loses its airtight seal, causing automatic dashboard-engaged 4WD to fail completely.

This master kit eliminates the hassle of sourcing individual wear components by matching two factory-original, high-strength forged steel outer stub shafts with a complete sequence of premium Spicer original equipment seals, oil seals, and o-rings for both sides of your rig. Upgrading with this complete master bundle re-establishes a dependable pneumatic seal while renewing the rotating structural strength of your front axle assemblies.

Kit Highlights:

• Complete Dual-Side Master Overhaul: Packages 2 genuine Spicer premium outer axle stub shafts, 2 massive main outer knuckle vacuum hub seals, 2 inner axle tube oil seals, and the supporting wheel hub assembly needle bearings and o-rings.

• Forged Carbon Steel Shafts: Includes precision-machined outer stub shafts engineered to exact OEM tolerances, featuring hardened splines and factory-ground seal journals to prevent premature seal wear.

• Genuine Spicer OEM Quality: Every shaft, seal, and component in this package is manufactured by the original equipment supplier to guarantee long service life and an exact mechanical press-fit.

• Restores Automatic 4x4 Function: Provides the high-precision, multi-lip outer hub vacuum seals necessary to re-establish airtight isolation, ensuring error-free automatic 4WD activation from the cab.

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 Shafts / Steering Knuckle Hub Assemblies (Complete Left and Right Kit)