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National 370371A Wheel Seal - Rear Inner
National 370371A Wheel Seal for Oil Bath Applications
National 370371A is an oil bath wheel seal built for driveline and axle sealing applications where consistent retention of lubricant matters. It uses nitrile material and precise dimensions to support a secure seal at the housing bore and shaft interface.
For buyers searching for a wheel seal for National 370371A, this part is specified with a 5.140 in. outside diameter, 5.126 in. housing bore, 3.937 in. shaft diameter, and 0.605 in. width. It is a direct-fit sealing component for service work on axle and hub assemblies.
Key Features
- Part number: 370371A
- Part description: oil bath seal
- Material: nitrile
- Outside diameter: 5.140 in. (130.560 mm)
- Housing bore: 5.126 in. (130.200 mm)
- Shaft diameter: 3.937 in. (100.000 mm)
- Width: 0.605 in. (15.370 mm)
- Installation tool reference: RD336
- Series: 370000
Detailed Description
National 370371A is engineered as an oil bath wheel seal for axle and hub sealing service. The nitrile construction supports sealing performance in lubrication-focused driveline applications, while the listed dimensions help confirm proper housing and shaft fitment before installation. This part is commonly searched by technicians and parts buyers looking for a wheel seal for National 370371A, especially when servicing axle assemblies that require accurate bore and shaft sizing.
National has focused on sealing solutions for decades, and this seal reflects that experience with a dimensionally specific design for service replacement. Cross-reference part numbers include OSC 2184 and OE-style reference 291-314 for the same application.
What This Part Helps Address
- Oil leakage at the wheel end or hub seal area
- Contamination entering the axle or hub assembly
- Loss of lubricant in oil bath applications
- Seal wear from age, heat, or mileage
- Service replacement needs on driveline and axle components
Installation Notes and Tips
Verify housing bore, shaft diameter, and width against the existing seal and service specifications before installation. Use the listed installation tool reference RD336 where applicable, and inspect the sealing surface for wear, scoring, or corrosion before pressing in the new seal. Clean the bore thoroughly and confirm the seal seats evenly to avoid premature leakage.
Compatible With axle and hub service applications where the specified dimensions match. For buyers comparing wheel seal options for National 370371A, confirm fitment by measurement rather than appearance alone.
Quality Assurance
National is recognized for sealing products and has supported the aftermarket with premium sealing solutions for more than 75 years. This wheel seal is built to the stated dimensional and material specifications for service replacement use.
| Brand | National |
|---|---|
| Part Number | 370371A |
| Width | 0.605 |
| Width | 15.370 |
| Outside Diameter | 130.560 |
| Outside Diameter | 5.140 |
| Housing Bore | 130.200 |
| Housing Bore | 5.126 |
| Housing Bore (Inch) | 5.126 |
| Housing Bore (MM) | 130.200 |
| Installation Tool | Rd336 |
| Material | Nitrile |
| Outside Diameter (Inch) | 5.140 |
| Outside Diameter (mm) | 130.560 |
| Part Description | Oil bath seal |
| Series | 370000 |
| Shaft (Inch) | 3.937 |
| Shaft (MM) | 100.000 |
| Shaft Diameter | 100.000 |
| Shaft Diameter | 3.937 |
| Type | 11 |
| Unit of Dimension | Inch |
| Width (Inch) | 0.605 |
| Width (mm) | 15.370 |
This part fits 0 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|
* 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.