National 714503 Transfer Case Output Shaft Seal - Front or Rear

Transfer Case Output Shaft Seal for 4WD Applications

National 714503 is a transfer case output shaft seal built for vehicles that rely on Borg-Warner transfer cases and part-time or full-time 4WD systems. It is specified with a polyacrylate sealing material and precise dimensional sizing to support a proper seal at the output shaft.

Use National 714503 when servicing transfer case leaks on applications such as Ford F-150, Ford Bronco, Chevrolet K3500, and GMC K3500 models with confirmed Borg-Warner transfer case coverage.

Key Features

• Transfer case output shaft seal / oil seal
• National part number 714503
• Polyacrylate sealing material for sealing performance
• Inside diameter: 1.886 in. / 47.900 mm
• Outside diameter: 2.765 in. / 70.230 mm
• Width: 0.472 in. / 12.000 mm
• Housing bore: 2.756 in. / 69.850 mm
• Overall width with side lip: 0.837 in. / 21.250 mm
• Flanged outside diameter: 3.150 in. / 80.000 mm
• Series 714000, Type 87

Detailed Description

National has supplied sealing solutions for more than 75 years, and the 714503 transfer case output shaft seal reflects that focus on dimensional accuracy and modern sealing materials. The polyacrylate construction is paired with clearly defined shaft, bore, and width measurements so the seal can be matched to the correct Borg-Warner transfer case application.

This part cross-references Continental 67065 and Gates 18994 for the same application. It is a direct-fit style seal for a wide range of 4WD trucks and SUVs, including Ford Expedition, Lincoln Navigator, Land Rover Range Rover, Chevrolet Astro, GMC Safari, and Ford F-250/F-350 applications listed below.

Common Problems This Seal Can Address

• Transfer case fluid leaking from the output shaft area
• Wet or contaminated underbody components near the transfer case
• Fluid loss that can lead to low transfer case lubricant level
• Seal wear from age, heat, and drivetrain use
• Service replacement during transfer case maintenance or rebuild work

Installation Notes and Tips

Verify the transfer case model, shaft diameter, housing bore, and position before installation. This seal is listed for front, rear, and N/A positions depending on the vehicle and transfer case configuration, so match the application notes exactly. Clean the sealing surface thoroughly and inspect the shaft for grooves or wear before installing National 714503.

• Fits 2004-2006 Ford Expedition, front, with Borg-Warner 4416 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 2002-2005 Lincoln Navigator, front, with Borg-Warner 4416 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 2004 Ford F-150, front, with Borg-Warner 4416 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1995-2002 Land Rover Range Rover, N/A, Full Time 4WD; with Borg-Warner 4462 Transfer Case; 2 Speed
• Fits 1992-2000 Chevrolet K3500, front, with Borg-Warner 4401 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1990-2000 Chevrolet K3500, front, with Borg-Warner 4470 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1990-2000 Chevrolet K3500, rear, with Borg-Warner 4470 Transfer Case; with Part Time 4WD; without Boot; 2 Speed
• Fits 1992-2000 Chevrolet K3500, rear, with Borg-Warner 4401 Transfer Case; with Part Time 4WD; without Boot; 2 Speed
• Fits 1990-2000 GMC K3500, front, with Borg-Warner 4470 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1992-2000 GMC K3500, rear, with Borg-Warner 4401 Transfer Case; with Part Time 4WD; without Boot; 2 Speed
• Fits 1990-1998 Chevrolet Astro, front, Full Time 4WD; with Borg-Warner 4472 Transfer Case; 1 Speed
• Fits 1990-1998 GMC Safari, rear, Full Time 4WD; with Borg-Warner 1372 Transfer Case; without Boot; 2 Speed
• Fits 1987-1997 Ford F-250, front, with Borg-Warner 1356 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1987-1997 Ford F-350, front, with Borg-Warner 1356 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1996-1997 Oldsmobile Bravada, front, Full Time 4WD; with Borg-Warner 4472 Transfer Case; 1 Speed
• Fits 1987-1996 Ford Bronco, front, with Borg-Warner 1356 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1987-1996 Ford F-150, front, with Borg-Warner 1356 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1989-1995 Land Rover Range Rover, N/A, Full Time 4WD; with Borg-Warner 1361 Transfer Case; 2 Speed
• Fits 1989-1991 Chevrolet K3500, front, with Borg-Warner 1370 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1989-1991 GMC K3500, rear, with Borg-Warner 1370 Transfer Case; with Part Time 4WD; without Boot; 2 Speed

Quality Assurance

National is recognized for premium sealing solutions and long-standing engineering support across drivetrain and chassis service parts. Part number 714503 is built to meet the dimensional and material requirements called out for the listed transfer case applications, including Ford, Chevrolet, GMC, Lincoln, Land Rover, and Oldsmobile fitments.