National 710455 Axle Spindle Seal - Front Outer

National 710455 Axle Spindle Seal Overview

National 710455 is a metric axle spindle seal built for front outer applications that need a precise sealing fit at the spindle and housing interface. With a nitrile sealing material and OE-style dimensions, it supports dependable oil control in compatible Ford Ranger, Mazda B2300, Mazda B3000, and related front axle setups.

Key Features

• Part number: National 710455
• Axle spindle seal / oil seal for driveline and axle service
• Nitrile construction for sealing performance in automotive applications
• Metric dimensions for accurate housing and shaft fitment
• Outside diameter: 1.858 in. (47.200 mm)
• Flanged outside diameter: 2.193 in. (55.700 mm)
• Housing bore: 1.850 in. (47.000 mm)
• Shaft size: 1.260 in. (32.000 mm)
• Width: 0.339 in. (8.600 mm)

Detailed Description

National 710455 is part of National’s 710400 series and is engineered as a metric oil seal for front outer axle spindle locations. The seal dimensions are specified for accurate seating in the housing bore and consistent contact at the shaft, helping maintain a proper barrier where axle lubricant must stay contained. This part is a direct-fit style option for select 1993-1997 Ford Ranger front outer applications, along with 1994-1997 Mazda B2300 and Mazda B3000 front outer applications, plus other listed Ford and Mazda front axle configurations. This part cross-references Bosch 13144 for the same application.

Vehicle Fitment

• Fits 1993-1997 Ford Ranger, Front Outer — with Spicer 28 axle(s) and 6.85 in ring gear, Independent Front Suspension; also with Spicer 35 axle(s) and 7.59 in ring gear, Independent Front Suspension.
• Fits 1994-1997 Mazda B2300, Front Outer — with Spicer 28 axle(s) and 6.85 in ring gear, Independent Front Suspension.
• Fits 1994-1997 Mazda B3000, Front Outer — with Spicer 28 axle(s) and 6.85 in ring gear, Independent Front Suspension.
• Fits 1994-1997 Mazda B4000, Front Outer — with Spicer 35 axle(s) and 7.59 in ring gear, Independent Front Suspension.
• Fits 1993-1996 Ford Bronco, Front Outer — with Spicer 44 axle(s) and 8.5 in ring gear, Independent Front Suspension.
• Fits 1993-1996 Ford F-150, Front Outer — with Spicer 44 axle(s) and 8.5 in ring gear, Independent Front Suspension.
• Fits 1993-1994 Ford Explorer, Front Outer — with Spicer 35 axle(s) and 7.59 in ring gear, Independent Front Suspension.
• Fits 1993-1994 Mazda Navajo, Front Outer — with Spicer 35 axle(s) and 7.59 in ring gear, Independent Front Suspension.

Common Issues This Seal Can Address

• Front axle oil seepage at the spindle area
• Contamination entering the axle assembly through a worn seal
• Lubricant loss around the front outer axle interface
• Noise or wear caused by degraded sealing surfaces
• Service replacement for aging Ford Ranger and Mazda front axle seals

Installation Notes and Tips

Verify axle type, ring gear size, and independent front suspension configuration before ordering. Match the housing bore, shaft diameter, and seal width to the original part to confirm proper fit on the spindle. Clean the sealing surfaces thoroughly during installation and inspect the spindle and hub area for wear that could affect seal life. For Ford Ranger and Mazda B-series front axle service, confirm the front outer position and axle specification against the vehicle build details.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop sealing components for modern vehicle service needs. National 710455 is built to the dimensional and material standards expected for axle spindle seal replacement in the listed applications.