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National 9161 Wheel Seal - Rear
National 9161 Rear Wheel Seal for Mustang
National 9161 is a rear wheel seal built for driveline sealing applications where shaft size, housing bore, and seal width must match precisely. It is a nitrile oil seal with Redicoat protection and dimensions that support a secure fit in the rear axle assembly.
Compatible with 1967-1970 Ford Mustang rear applications, this seal is specified for vehicles with 24 splines and a 7.25 inch ring gear. If you are servicing a Ford Mustang rear axle and need a direct-fit wheel seal, National 9161 is the part number to verify.
Key Features
- National 9161 wheel seal for rear axle sealing applications
- Nitrile construction for sealing performance in driveline use
- Inside diameter: 1.326 in. / 33.680 mm
- Outside diameter: 2.316 in. / 58.830 mm
- Housing bore: 2.312 in. / 58.720 mm
- Width: 0.435 in. / 11.050 mm
- Redicoat finish for improved sealing surface protection
- Series 9000, Type 48 oil seal design
Detailed Description
National 9161 is an oil seal used in wheel and axle sealing systems where the seal must retain lubricant and help keep contaminants out of the rear axle area. The seal’s nitrile material and precise dimensional specs make it a practical choice for service work on classic Ford driveline assemblies. For 1967-1970 Ford Mustang rear axle service, this part number is the one to match against the housing bore, shaft diameter, and seal width before installation. This part cross-references BBB Industries 13419 for the same application.
What It Helps Address
- Rear axle oil leakage at the wheel seal area
- Contamination entering the axle housing
- Wear-related sealing loss from an aged or hardened seal
- Incorrect seal fit caused by mismatched dimensions
- Service needs on 1967-1970 Ford Mustang rear axle assemblies
Installation Notes and Tips
Confirm the shaft diameter, housing bore, and seal width before installation. National 9161 is specified for rear use on 1967-1970 Ford Mustang models with 24 splines and a 7.25 inch ring gear, so verify axle configuration before ordering. Clean the bore and sealing surface thoroughly, and inspect the axle shaft for grooves or wear that could affect sealing performance.
Quality Assurance
National has supplied sealing solutions for more than 75 years and continues to develop sealing components for modern and legacy vehicle service. The 9161 wheel seal reflects that focus on dimensional accuracy and application-specific fitment for driveline and axle repairs.
| Brand | National |
|---|---|
| Part Number | 9161 |
| Housing Bore (Inch) | 2.312 |
| Housing Bore (MM) | 58.720 |
| Inside Diameter | 1.326 |
| Inside Diameter | 33.680 |
| Material | Nitrile |
| Outside Diameter | 2.316 |
| Outside Diameter | 58.830 |
| Outside Diameter (Inch) | 2.316 |
| Outside Diameter (mm) | 58.830 |
| Part Description | Oil Seal |
| Redicoat | Yes |
| Series | 9000 |
| Shaft (Inch) | 1.326 |
| Shaft (MM) | 33.680 |
| Type | 48 |
| Unit of Dimension | Inch |
| Width (Inch) | 0.435 |
| Width (mm) | 11.050 |
This part fits 4 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1970 | Ford | Mustang | Rear | Wheel Seal with 24 splines and 7.25 inch ring gear. |
| 1969 | Ford | Mustang | Rear | Wheel Seal with 24 splines and 7.25 inch ring gear. |
| 1968 | Ford | Mustang | Rear | Wheel Seal with 24 splines and 7.25 inch ring gear. |
| 1967 | Ford | Mustang | Rear | Wheel Seal with 24 splines and 7.25 inch ring gear. |
* 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.