National 470682 Transfer Case Output Shaft Seal - Front or Rear Rearward

Transfer Case Output Shaft Seal for 470682

National 470682 is a transfer case output shaft seal built with nitrile sealing material and Redicoat protection for dependable sealing performance. It is a zero duplication part with precise dimensions for applications that require a 1.562 in. shaft diameter and a 2.627 in. outside diameter.

Key Features

• Part number: 470682
• Transfer case output shaft seal / oil seal
• Nitrile sealing material for fluid control
• Redicoat finish
• Inside diameter: 1.562 in. (39.670 mm)
• Outside diameter: 2.627 in. (66.730 mm)
• Thickness/width: 0.312 in. (7.920 mm)
• Housing bore: 2.623 in. (66.620 mm)
• Zero duplication part

Detailed Description

National 470682 is engineered as an oil seal for transfer case and axle-related sealing applications where accurate shaft and bore dimensions matter. The nitrile sealing material is selected for fluid sealing performance, while the Redicoat surface treatment supports installation and sealing consistency. National has supplied sealing solutions for more than 75 years, and this part reflects that focus on dimensional accuracy and application coverage. This part cross-references FEL-PRO 60538 for the same application.

Compatible With front applications on 1981-1993 Dodge W250 and W350, 1989-1991 Chevrolet V3500, 1987-1991 GMC V3500, 1987-1988 Chevrolet V30, 1977-1986 Chevrolet K30, 1979-1986 GMC K3500, 1975-1980 Dodge W200 and W300, and rear rearward applications on 1966-1976 Ford F-100. These fitments include 9.75" ring gear, Spicer 60-F axle, differential pinion race, and full-time 4WD notes where listed.

What It Helps Address

• Gear oil seepage at the output shaft area
• Contamination entering the transfer case sealing surface
• Wear-related leakage around the shaft and housing bore
• Seal replacement needs on older 4WD driveline assemblies
• Fitment matching for National 470682 applications

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal width before installation. Inspect the shaft surface for grooves or corrosion, and clean the bore thoroughly so the seal seats evenly. Confirm the vehicle application details, including axle and position notes, before ordering. For Ford F-100 and Dodge, Chevrolet, and GMC applications, match the listed position and configuration exactly to the vehicle build.

Quality Assurance

National builds sealing products with long-running industry experience and application-focused engineering. Part number 470682 is produced as a precision oil seal with defined dimensional specifications for consistent replacement use.