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National 414045 Wheel Seal - Rear
National 414045 Rear Wheel Seal
National 414045 is a rear wheel seal built for select Buick applications and sized for precise sealing performance. It uses nitrile material with Redi-Coat treatment to help support a reliable seal at the wheel end, where contamination and lubricant retention are critical.
Compatible with 1950-1955 Buick Roadmaster, rear; 1954-1955 Buick Century, rear; and 1954 Buick Skylark, rear. This National 414045 wheel seal is a direct-fit sealing solution for classic Buick rear axle service.
Key Features
- Part number: 414045
- Wheel seal / oil seal for rear driveline service
- Nitrile sealing material
- Redi-Coat surface treatment
- Inside diameter: 1.875 in. / 47.630 mm
- Outside diameter: 2.786 in. / 70.760 mm
- Housing bore: 2.782 in. / 70.660 mm
- Shaft size: 1.875 in. / 47.630 mm
- Width: 0.500 in. / 12.700 mm
- Series: 410000, Type 41
Product Details
National 414045 is engineered as a rear wheel seal for classic Buick rear axle applications. The seal dimensions are specified in both inch and metric units to support accurate matching during service, and the nitrile construction is selected for sealing performance in driveline environments. National has focused on sealing solutions for more than 75 years, and this part reflects that experience in a format suited to older vehicle maintenance.
This part cross-references SKF 18695 and Dayco 15325 for the same application.
What It Helps Address
- Rear axle lubricant seepage at the wheel end
- Contamination entering the hub or axle seal area
- Seal wear from age, heat, and road exposure
- Service issues on classic Buick Roadmaster, Century, and Skylark rear applications
Installation Notes
Verify shaft diameter, housing bore, and seal width before installation to confirm the correct fit. Clean the sealing surface and inspect the axle shaft and hub area for wear or scoring before fitting the new seal. For best results, match the seal orientation to the original part and confirm rear-position application on the vehicle.
Quality Assurance
National is a long-established sealing brand with a reputation built over decades of drivetrain and axle sealing development. Part number 414045 is produced to support consistent fit and sealing performance for the listed Buick rear applications.
| Brand | National |
|---|---|
| Part Number | 414045 |
| Housing Bore (Inch) | 2.782 |
| Housing Bore (MM) | 70.660 |
| Inside Diameter | 1.875 |
| Inside Diameter | 47.630 |
| Material | Nitrile |
| Outside Diameter | 2.786 |
| Outside Diameter | 70.760 |
| Outside Diameter (Inch) | 2.786 |
| Outside Diameter (mm) | 70.760 |
| Part Description | Oil Seal |
| Redicoat | Yes |
| Series | 410000 |
| Shaft (Inch) | 1.875 |
| Shaft (MM) | 47.630 |
| Type | 41 |
| Unit of Dimension | Inch |
| Width (Inch) | 0.500 |
| Width (mm) | 12.700 |
This part fits 9 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1955 | Buick | Century | Rear | |
| 1955 | Buick | Roadmaster | Rear | |
| 1954 | Buick | Century | Rear | |
| 1954 | Buick | Roadmaster | Rear | |
| 1954 | Buick | Skylark | Rear | |
| 1953 | Buick | Roadmaster | Rear | |
| 1952 | Buick | Roadmaster | Rear | |
| 1951 | Buick | Roadmaster | Rear | |
| 1950 | Buick | Roadmaster | Rear |
* 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.