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National 473457 Transfer Case Output Shaft Seal - Front or Rear
Transfer Case Output Shaft Seal for Ford 4WD
National 473457 is a transfer case output shaft seal built for rear and front transfer case applications on select Ford trucks. It uses nitrile sealing material and Redicoat treatment to support a tight seal at the shaft and housing bore, helping control fluid leakage in the transfer case assembly.
- Transfer case output shaft seal for select Ford F-150, F-250, and F-350 applications
- Nitrile sealing material for oil resistance in transfer case service
- Redicoat finish for improved sealing surface performance
- Inside diameter: 1.875 in. / 47.630 mm
- Outside diameter: 3.066 in. / 77.880 mm
- Width: 0.375 in. / 9.530 mm
- Housing bore: 3.061 in. / 77.750 mm
- National 473457 / Series 470000 oil seal
Fitment Details
Compatible With 1979 Ford F-150, rear, with New Process 205 Transfer Case, Part Time 4WD, 2 Speed. Compatible With 1979 Ford F-250, rear, with New Process 205 Transfer Case, Part Time 4WD, 2 Speed. Compatible With 1979 Ford F-350, rear, with New Process 205 Transfer Case, Part Time 4WD, 2 Speed. Compatible With 1978 Ford F-150, front, Full Time 4WD; with New Process 203 Transfer Case; 2 Speed. Compatible With 1978 Ford F-250, front, Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
What This Seal Helps Address
- Transfer case fluid seepage at the output shaft
- Oil leakage around the housing bore
- Seal wear from age, heat, and drivetrain use
- Loss of sealing performance in 4WD transfer case service
- Maintenance replacement during transfer case repair
Installation Notes
Verify shaft diameter, housing bore, and transfer case type before installation. This seal is specified for 1979 Ford F-150, F-250, and F-350 rear applications with the New Process 205 transfer case, and 1978 Ford F-150 and F-250 front applications with the New Process 203 transfer case. Clean the sealing surface and inspect the shaft for wear or scoring before installing National 473457.
Quality Assurance
National has supplied sealing solutions for more than 75 years and continues to develop sealing components for modern vehicle service needs. This part cross-references FEL-PRO 60744 for the same application.
| Brand | National |
|---|---|
| Part Number | 473457 |
| Footnote | Zero Duplication Part |
| Housing Bore (Inch) | 3.061 |
| Housing Bore (MM) | 77.750 |
| Inside Diameter | 1.875 |
| Inside Diameter | 47.630 |
| Material | Nitrile |
| Outside Diameter | 3.066 |
| Outside Diameter | 77.880 |
| Outside Diameter (Inch) | 3.066 |
| Outside Diameter (mm) | 77.880 |
| Part Description | Oil Seal |
| Redicoat | Yes |
| Sealing Material | Nitrile |
| Series | 470000 |
| Shaft (Inch) | 1.875 |
| Shaft (MM) | 47.630 |
| Thickness | 0.375 |
| Thickness | 9.530 |
| Type | 47 |
| Unit of Dimension | Inch |
| Width (Inch) | 0.375 |
| Width (mm) | 9.530 |
This part fits 5 vehicles. Search below:
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 1979 | Ford | F-150 | 4WD | Rear | Fits vehicles with New Process 205 Transfer Case, Part Time 4WD, 2 Speed. |
| 1979 | Ford | F-250 | 4WD | Rear | Fits vehicles with New Process 205 Transfer Case, Part Time 4WD, 2 Speed. |
| 1979 | Ford | F-350 | 4WD | Rear | Fits vehicles with New Process 205 Transfer Case, Part Time 4WD, 2 Speed. |
| 1978 | Ford | F-150 | 4WD | Front | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1978 | Ford | F-250 | 4WD | Front | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.