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National 473204 Transfer Case Output Shaft Seal - Rear
| Brand | National 473204 |
|---|---|
| Position | Rear |
| Footnote | Zero Duplication Part |
| Housing Bore (Inch) | 2.750 |
| Housing Bore (MM) | 69.850 |
| Inside Diameter | 2.125 |
| Inside Diameter | 53.980 |
| Material | Nitrile |
| Outside Diameter | 2.754 |
| Outside Diameter | 69.950 |
| Outside Diameter (Inch) | 2.754 |
| Outside Diameter (mm) | 69.950 |
| Part Description | Oil Seal |
| Redicoat | Yes |
| Sealing Material | Nitrile |
| Series | 470000 |
| Shaft (Inch) | 2.125 |
| Shaft (MM) | 53.980 |
| Thickness | 0.375 |
| Thickness | 9.530 |
| Type | 47 |
| Unit of Dimension | Inch |
| Width (Inch) | 0.375 |
| Width (mm) | 9.530 |
| Fits | Chevrolet, Dodge, GMC, Plymouth, and Ford · 80 vehicles |
Nitrile seal. Provides dependable sealing performance for transfer case service.
Redicoat finish. Helps the seal install smoothly and resist wear.
Zero duplication part. A direct-fit replacement in the 470000 series.
Cross-references Bosch 62415, Continental 62412 and Continental 62413 for the same application. See all 24.
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Transfer Case Output Shaft Seal for 4WD Applications
The National 473204 transfer case output shaft seal is built for rear output sealing in full-time 4WD systems using the New Process 203 transfer case. It is a direct-fit oil seal for select Chevrolet, Dodge, Ford, and GMC trucks and SUVs from the 1973-1979 model years.
With nitrile sealing material and Redi-Coat treatment, this seal is designed to help maintain a tight seal at the transfer case output shaft. The 473204 is a zero-duplication part in National’s 470000 series and is sized for a 2.125-inch shaft and 2.750-inch housing bore.
- Brand: National
- Part Number: 473204
- Part type: Transfer case output shaft seal / oil seal
- Sealing material: Nitrile
- Redi-Coat: Yes
- Inside diameter: 2.125 in. / 53.980 mm
- Outside diameter: 2.754 in. / 69.950 mm
- Thickness: 0.375 in. / 9.530 mm
- Housing bore: 2.750 in. / 69.850 mm
- Series: 470000
Vehicle Fitment
- Fits 1975-1979 Chevrolet K10, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1973-1979 Chevrolet K10 Suburban, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1975-1979 Chevrolet K20, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1973-1979 Chevrolet K20 Suburban, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1977-1979 Chevrolet K30, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1975-1979 Chevrolet K5 Blazer, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1974-1979 Dodge Ramcharger, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1977-1979 Dodge W150, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1975-1979 Dodge W200, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1975-1979 Dodge W300, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1973-1979 GMC Jimmy, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1979 GMC K1500, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1979 GMC K1500 Suburban, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1979 GMC K2500, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1979 GMC K2500 Suburban, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1979 GMC K3500, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1976-1978 Ford F-150, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1973-1978 Ford F-250, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1975-1977 Dodge W100, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1976 Ford F-100, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1973-1974 Chevrolet Blazer, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
- Fits 1973-1974 Ford F-350, rear; Full Time 4WD; with New Process 203 Transfer Case; 2 Speed.
What This Seal Helps Address
- Transfer case fluid seepage at the rear output shaft
- Oil residue around the output seal area
- Seal wear from age, heat, and drivetrain movement
- Leak-related fluid loss in New Process 203-equipped 4WD systems
- Service replacement for worn or hardened original seals
Installation Notes and Tips
Verify shaft diameter, housing bore, and transfer case application before installation. Clean the sealing surface and inspect the output shaft for grooves or damage that could affect seal life. This part cross-references Dorman - HELP 47052 for the same application.
For best results, install the seal squarely in the bore and confirm the lip contacts the shaft evenly. The National 473204 is commonly selected for rear output service on Chevrolet K10, Dodge Ramcharger, and Ford F-250 models equipped with the New Process 203 transfer case.
Quality Assurance
National has supplied sealing products for more than 75 years and continues to develop sealing solutions for modern and legacy vehicles. The 473204 reflects that experience with a nitrile construction and Redi-Coat finish for dependable transfer case sealing in service applications.
This part fits 80 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 1979 | Chevrolet | K10 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | Chevrolet | K10 Suburban | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | Chevrolet | K20 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | Chevrolet | K20 Suburban | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | Chevrolet | K30 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | Chevrolet | K5 Blazer | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | Dodge | Ramcharger | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | Dodge | W150 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | Dodge | W200 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | Dodge | W300 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | GMC | Jimmy | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | GMC | K1500 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | GMC | K1500 Suburban | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | GMC | K2500 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | GMC | K2500 Suburban | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1979 | GMC | K3500 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1978 | Chevrolet | K10 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1978 | Chevrolet | K10 Suburban | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1978 | Chevrolet | K20 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1978 | Chevrolet | K20 Suburban | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1978 | Chevrolet | K30 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1978 | Chevrolet | K5 Blazer | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1978 | Dodge | Ramcharger | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1978 | Dodge | W150 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1978 | Dodge | W200 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1978 | Dodge | W300 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1978 | Ford | F-150 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1978 | Ford | F-250 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1978 | GMC | Jimmy | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1977 | Chevrolet | K10 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1977 | Chevrolet | K10 Suburban | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1977 | Chevrolet | K20 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1977 | Chevrolet | K20 Suburban | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1977 | Chevrolet | K30 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1977 | Chevrolet | K5 Blazer | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1977 | Dodge | Ramcharger | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1977 | Dodge | W100 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1977 | Dodge | W150 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1977 | Dodge | W200 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1977 | Dodge | W300 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1977 | Ford | F-150 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1977 | Ford | F-250 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1977 | GMC | Jimmy | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1976 | Chevrolet | K10 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1976 | Chevrolet | K10 Suburban | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1976 | Chevrolet | K20 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1976 | Chevrolet | K20 Suburban | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1976 | Chevrolet | K5 Blazer | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1976 | Dodge | Ramcharger | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1976 | Dodge | W100 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1976 | Dodge | W200 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1976 | Dodge | W300 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1976 | Ford | F-100 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1976 | Ford | F-150 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1976 | Ford | F-250 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1976 | GMC | Jimmy | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1975 | Chevrolet | K10 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1975 | Chevrolet | K10 Suburban | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1975 | Chevrolet | K20 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1975 | Chevrolet | K20 Suburban | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1975 | Chevrolet | K5 Blazer | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1975 | Dodge | Ramcharger | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1975 | Dodge | W100 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1975 | Dodge | W200 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1975 | Dodge | W300 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1975 | Ford | F-250 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1975 | GMC | Jimmy | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1974 | Chevrolet | Blazer | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1974 | Chevrolet | K10 Suburban | U/K | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1974 | Chevrolet | K20 Suburban | U/K | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1974 | Dodge | Ramcharger | U/K | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1974 | Ford | F-250 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1974 | Ford | F-350 | U/K | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1974 | GMC | Jimmy | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1973 | Chevrolet | Blazer | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1973 | Chevrolet | K10 Suburban | U/K | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1973 | Chevrolet | K20 Suburban | U/K | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1973 | Ford | F-250 | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1973 | Ford | F-350 | U/K | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| 1973 | GMC | Jimmy | 4WD | Rear | Full Time 4WD; with New Process 203 Transfer Case; 2 Speed |
| No rows match your filter. | |||||
Directly replaces or cross-references 24 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 62415Continental — 62412Continental — 62413Continental — 62414Dixie Electric Ltd — 11924Dorman - HELP — 47052Gates — 21059Gates — 21061Gates — 21063National — 4732040704-448847053344278755463-1755463-238213957554655A-1805-F-526A1805F-526D4T27B215BD4TZ-7B215BPR1868PR5147SKW141443