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National 204005 Steering Knuckle Seal - Front
| Brand | National 204005 |
|---|---|
| Position | Front |
| Housing Bore (Inch) | 1.780 |
| Housing Bore (MM) | 45.210 |
| Material | Nitrile |
| Outside Diameter (Inch) | 1.785 |
| Outside Diameter (mm) | 45.340 |
| Part Description | Oil Seal |
| Series | 204000 |
| Shaft (Inch) | 1.000 |
| Shaft (MM) | 25.400 |
| Type | 204 |
| Unit of Dimension | Inch |
| Width (Inch) | 0.468 |
| Width (mm) | 11.890 |
| Fits | Chevrolet, GMC, Ford, Dodge, and Fargo · 134 vehicles |
Nitrile seal. Helps resist wear and maintain a reliable seal.
Oil seal design. Controls fluid leakage in steering sealing applications.
Premium sealing solutions. Backed by more than 75 years of industry experience.
Cross-references Anchor 10035, Timken 204005S and Walker Exhaust 47980 for the same application. See all 6.
Steering Knuckle Seal for Front Axles
National 204005 is a steering knuckle seal built with nitrile material and sized for precise housing and shaft dimensions. It is used in front axle applications where a reliable oil seal is needed to help maintain proper sealing at the knuckle area.
- Part number: 204005
- Part description: oil seal
- Material: nitrile
- Housing bore: 1.780 in. / 45.210 mm
- Outside diameter: 1.785 in. / 45.340 mm
- Shaft size: 1.000 in. / 25.400 mm
- Width: 0.468 in. / 11.890 mm
- Series: 204000
- Unit of dimension: inch
Fitment and Application Details
Compatible with front axle applications on classic Chevrolet, GMC, and Ford trucks and SUVs, including 1975-1977 Chevrolet K10 front, 1967-1977 Chevrolet K20 Suburban front, and 1959-1965 Ford F-100 front. This part number 204005 also appears in front axle service applications for Chevrolet Blazer, GMC Jimmy, Ford Bronco, Ford F-250, and Ford F-350 models with the listed Spicer axle and ring gear configurations.
- Fits 1975-1977 Chevrolet K10, front, with Spicer 44-5F axle(s) and 8.5 inch ring gear.
- Fits 1967-1977 Chevrolet K10 Suburban, front, with Spicer 44-5F axle(s) and 8.5 inch ring gear.
- Fits 1975-1977 Chevrolet K20, front, with Spicer 44-5F axle(s) and 8.5 inch ring gear.
- Fits 1967-1977 Chevrolet K20 Suburban, front, with Spicer 44-5F axle(s) and 8.5 inch ring gear.
- Fits 1975-1977 Chevrolet K5 Blazer, front, with Spicer 44-5F axle(s) and 8.5 inch ring gear.
- Fits 1975-1976 GMC Jimmy, front, with Spicer 44-5F axle(s) and 8.5 inch ring gear.
- Fits 1970-1972 GMC Jimmy, front, with Spicer 44-5F axle(s) and 8.5 inch ring gear.
- Fits 1974-1975 Ford F-250, front, with Spicer 44-6EF axle(s) and 8.5 inch ring gear.
- Fits 1974-1975 Ford F-350, front, with Spicer 44-6EF axle(s) and 8.5 inch ring gear.
- Fits 1969-1974 Chevrolet Blazer, front, with Spicer 44-5F axle(s) and 8.5 inch ring gear.
- Fits 1971-1972 Ford Bronco, front, with Spicer 44-1F axle(s) and 8.5 inch ring gear.
- Fits 1966-1972 Ford F-100, front, with Spicer 44-7F axle(s) and 8.5 inch ring gear.
- Fits 1964-1972 Ford F-250, front, with Spicer 44-6CF axle(s) and 8.5 inch ring gear.
- Fits 1964-1972 Ford F-250, front, with Spicer 44-6F axle(s) and 8.5 inch ring gear.
- Fits 1964-1972 Ford F-350, front, with Spicer 44-6CF axle(s) and 8.5 inch ring gear.
- Fits 1964-1972 Ford F-350, front, with Spicer 44-6F axle(s) and 8.5 inch ring gear.
- Fits 1966-1971 Ford Bronco, front, with Spicer 30-AF axle(s) and 7.125 inch ring gear.
- Fits 1964-1971 Ford F-250, front, with Spicer 44-6FHD axle(s) and 8.5 inch ring gear.
- Fits 1964-1971 Ford F-350, front, with Spicer 44-6FHD axle(s) and 8.5 inch ring gear.
- Fits 1959-1965 Ford F-100, front, with Spicer 44-F axle(s) and 8.5 inch ring gear.
- Fits 1959-1965 Ford F-250, front, with Spicer 44-F axle(s) and 8.5 inch ring gear.
- Fits 1959-1965 Ford F-350, front, with Spicer 44-F axle(s) and 8.5 inch ring gear.
What This Seal Helps Address
- Oil seepage at the steering knuckle or spindle area
- Contamination entering the front axle sealing surface
- Wear-related leakage on older front axle assemblies
- Service replacement needs on classic Chevrolet, GMC, and Ford 4x4 front ends
Installation Notes and Tips
Verify housing bore, shaft diameter, and width before installation to confirm the seal matches the axle assembly. Clean the sealing surfaces thoroughly and inspect the knuckle, spindle, and shaft for wear or scoring before pressing the seal into place. Confirm the axle configuration and ring gear notes listed in the fitment data for Chevrolet K10, Ford Bronco, and Ford F-250 applications.
Quality Assurance
National has supplied sealing products for more than 75 years and continues to develop sealing solutions for modern and legacy vehicle service needs. This part cross-references Timken 204005S for the same application.
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 1977 | Chevrolet | K10 | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1977 | Chevrolet | K10 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1977 | Chevrolet | K20 | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1977 | Chevrolet | K20 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1977 | Chevrolet | K5 Blazer | 4WD | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1976 | Chevrolet | K10 | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1976 | Chevrolet | K10 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1976 | Chevrolet | K20 | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1976 | Chevrolet | K20 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1976 | Chevrolet | K5 Blazer | 4WD | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1976 | GMC | Jimmy | 4WD | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1975 | Chevrolet | K10 | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1975 | Chevrolet | K10 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1975 | Chevrolet | K20 | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1975 | Chevrolet | K20 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1975 | Chevrolet | K5 Blazer | 4WD | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1975 | Ford | F-250 | 4WD | Front | with Spicer 44-6EF Axle(s); with 8.5 (in) Ring Gear |
| 1975 | Ford | F-350 | — | Front | with Spicer 44-6EF Axle(s); with 8.5 (in) Ring Gear |
| 1975 | GMC | Jimmy | 4WD | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1974 | Chevrolet | Blazer | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1974 | Chevrolet | K10 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1974 | Chevrolet | K20 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1974 | Ford | F-250 | 4WD | Front | with Spicer 44-6EF Axle(s); with 8.5 (in) Ring Gear |
| 1974 | Ford | F-350 | — | Front | with Spicer 44-6EF Axle(s); with 8.5 (in) Ring Gear |
| 1973 | Chevrolet | Blazer | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1973 | Chevrolet | K10 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1973 | Chevrolet | K20 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1972 | Chevrolet | Blazer | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1972 | Chevrolet | K10 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1972 | Chevrolet | K20 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1972 | Ford | Bronco | — | Front | with Spicer 44-1F Axle(s); with 8.5 (in) Ring Gear |
| 1972 | Ford | F-100 | 4WD | Front | with Spicer 44-7F Axle(s); with 8.5 (in) Ring Gear |
| 1972 | Ford | F-250 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1972 | Ford | F-250 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1972 | Ford | F-350 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1972 | Ford | F-350 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1972 | GMC | Jimmy | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1971 | Chevrolet | Blazer | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1971 | Chevrolet | K10 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1971 | Chevrolet | K20 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1971 | Ford | Bronco | — | Front | with Spicer 44-1F Axle(s); with 8.5 (in) Ring Gear |
| 1971 | Ford | Bronco | — | Front | with Spicer 30-AF Axle(s); with 7.125 (in) Ring Gear |
| 1971 | Ford | F-100 | 4WD | Front | with Spicer 44-7F Axle(s); with 8.5 (in) Ring Gear |
| 1971 | Ford | F-250 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1971 | Ford | F-250 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1971 | Ford | F-250 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1971 | Ford | F-350 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1971 | Ford | F-350 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1971 | Ford | F-350 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1971 | GMC | Jimmy | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1970 | Chevrolet | Blazer | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1970 | Chevrolet | K10 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1970 | Chevrolet | K20 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1970 | Ford | Bronco | — | Front | with Spicer 30-AF Axle(s); with 7.125 (in) Ring Gear |
| 1970 | Ford | F-100 | 4WD | Front | with Spicer 44-7F Axle(s); with 8.5 (in) Ring Gear |
| 1970 | Ford | F-250 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1970 | Ford | F-250 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1970 | Ford | F-250 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1970 | Ford | F-350 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1970 | Ford | F-350 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1970 | Ford | F-350 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1970 | GMC | Jimmy | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1969 | Chevrolet | Blazer | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1969 | Chevrolet | K10 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1969 | Chevrolet | K20 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1969 | Ford | Bronco | — | Front | with Spicer 30-AF Axle(s); with 7.125 (in) Ring Gear |
| 1969 | Ford | F-100 | — | Front | with Spicer 44-7F Axle(s); with 8.5 (in) Ring Gear |
| 1969 | Ford | F-250 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1969 | Ford | F-250 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1969 | Ford | F-250 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1969 | Ford | F-350 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1969 | Ford | F-350 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1969 | Ford | F-350 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1968 | Chevrolet | K10 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1968 | Chevrolet | K20 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1968 | Ford | Bronco | — | Front | with Spicer 30-AF Axle(s); with 7.125 (in) Ring Gear |
| 1968 | Ford | F-100 | — | Front | with Spicer 44-7F Axle(s); with 8.5 (in) Ring Gear |
| 1968 | Ford | F-250 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1968 | Ford | F-250 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1968 | Ford | F-250 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1968 | Ford | F-350 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1968 | Ford | F-350 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1968 | Ford | F-350 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1967 | Chevrolet | K10 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1967 | Chevrolet | K20 Suburban | — | Front | Fits vehicles with Spicer 44-5F Axle(s) and 8.5 inch Ring Gear. |
| 1967 | Ford | Bronco | — | Front | with Spicer 30-AF Axle(s); with 7.125 (in) Ring Gear |
| 1967 | Ford | F-100 | — | Front | with Spicer 44-7F Axle(s); with 8.5 (in) Ring Gear |
| 1967 | Ford | F-250 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1967 | Ford | F-250 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1967 | Ford | F-250 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1967 | Ford | F-350 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1967 | Ford | F-350 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1967 | Ford | F-350 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1966 | Ford | Bronco | — | Front | with Spicer 30-AF Axle(s); with 7.125 (in) Ring Gear |
| 1966 | Ford | F-100 | — | Front | with Spicer 44-7F Axle(s); with 8.5 (in) Ring Gear |
| 1966 | Ford | F-250 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1966 | Ford | F-250 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1966 | Ford | F-250 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1966 | Ford | F-350 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1966 | Ford | F-350 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1966 | Ford | F-350 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1965 | Ford | F-100 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1965 | Ford | F-250 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1965 | Ford | F-250 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1965 | Ford | F-250 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1965 | Ford | F-250 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1965 | Ford | F-350 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1965 | Ford | F-350 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1965 | Ford | F-350 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1965 | Ford | F-350 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1964 | Ford | F-100 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1964 | Ford | F-250 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1964 | Ford | F-250 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1964 | Ford | F-250 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1964 | Ford | F-250 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1964 | Ford | F-350 | — | Front | with Spicer 44-6FHD Axle(s); with 8.5 (in) Ring Gear |
| 1964 | Ford | F-350 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1964 | Ford | F-350 | — | Front | Fits Axle Spindle Seal for Spicer 44-6CF Axles with 8.5 inch Ring Gear. |
| 1964 | Ford | F-350 | — | Front | with Spicer 44-6F Axle(s); with 8.5 (in) Ring Gear |
| 1963 | Ford | F-100 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1963 | Ford | F-250 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1963 | Ford | F-350 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1962 | Ford | F-100 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1962 | Ford | F-250 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1962 | Ford | F-350 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1961 | Ford | F-100 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1961 | Ford | F-250 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1961 | Ford | F-350 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1960 | Ford | F-100 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1960 | Ford | F-250 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1960 | Ford | F-350 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1959 | Ford | F-100 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1959 | Ford | F-250 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
| 1959 | Ford | F-350 | — | Front | with Spicer 44-F Axle(s); with 8.5 (in) Ring Gear |
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