Spicer Front Outer Axle Stub Shaft Thrust Washer & Snap Ring Hardware Kit for 1999-2004 Ford Super Duty (Dana 50 / 60, Single Side)

Eliminate excessive outer stub shaft end-play, prevent premature wear on your front vacuum seals, and secure your 4x4 hub locking assemblies with this genuine Spicer Outer Axle Shaft Thrust Washer & Snap Ring Kit. Specifically compiled as a direct factory replacement hardware set for 1999–2004 Ford F-250 to F-550 Super Duty trucks and 2000–2005 Ford Excursion models, this package replaces the mandatory wheel-end hardware on Monobeam Dana 50 and Dana 60 front axles.

On solid-axle Ford platforms, the outer axle stub shaft passes through the steering knuckle and wheel hub unit bearing assembly, held in place by a heavy-duty snap ring. Positioned immediately behind this snap ring is a critical 3-piece thrust washer configuration consisting of one grooved plastic/nylon spacer flanked by two steel shims. Together, these components lock the axle shaft's outward lateral movement. Over high mileage, heavy towing, or routine front-end maintenance, the plastic thrust washer naturally scores, flattens, or breaks, while the steel snap ring can distort or lose its tension during removal. Failing to replace worn or missing thrust washers introduces excessive shaft "in-and-out" play, which rapidly destroys your expensive inner spindle needle bearings and tears the large rubber vacuum knuckle seals—instantly disabling your dashboard-controlled automatic 4WD engagement system.

This original equipment manufacturer (OEM) small parts package supplies a factory-correct hardware setup to properly service one wheel station. Sourcing genuine Spicer hardware ensures exact original equipment washer thicknesses, precise outer snap ring dimensions, and specialized materials engineered to withstand the continuous rotational friction of your front axle assemblies.

Kit Contents (Services One Front Steering Knuckle Hub Assembly):

• (1) Heavy-Duty Outer Axle Shaft Retaining Snap Ring (Part # 620180)

• (1) Specialized Grooved Plastic/Nylon Thrust Washer (Part # 47766)

• (2) Precision-Stamped Inner Steel Thrust Washer Shims (Part # 701119 / 47714)

Kit Highlights:

• Corrects Axle Shaft End-Play: Restores factory-spec lateral depth alignment for your outer stub shaft, preventing inward and outward movement that can damage internal hub components.

• Genuine Spicer OEM Quality: Sourced straight from the vehicle's original axle supplier to guarantee matching factory blueprints, precise washer stack heights, and uncompromised spring-steel tension.

• Protects Hub Vacuum Seals: Eliminates excessive shaft slop that rubs against and tears your primary knuckle vacuum seals, helping maintain an airtight environment for your Electronic Shift-on-the-Fly (ESOF) system.

• Mandatory Service Hardware: A highly recommended replacement pack whenever pulling the front axle shafts for a U-joint, unit bearing, or knuckle seal rebuild.

Vehicle & Axle Fitment:

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

• Ford Trucks: 1999, 2000, 2001, 2002, 2003, and 2004 Ford F-250 Super Duty, F-350 Super Duty, F-450 Super Duty, and F-550 Super Duty 4x4 models.

• Ford Excursion: 2000, 2001, 2002, 2003, 2004, and 2005 4x4 vehicles.

• Position: Front Outer Axle Stub Shaft Tip — Left (Driver) or Right (Passenger) Side Wheel Hub Interface (Note: Two kits required to service both sides of the vehicle).