National 710045 Axle Spindle Seal - Front Outer

Axle Spindle Seal for Front Outer Applications

National 710045 is an axle spindle seal built for front outer driveline service on select Ford, Dodge, Chevrolet, and GMC trucks. It uses nitrile construction and precise dimensional sizing to support a secure seal at the housing bore and shaft interface.

With a 2.840-inch outside diameter, 2.835-inch housing bore, and 2.250-inch shaft size, this oil seal is specified for demanding front axle locations where consistent sealing matters. National 710045 is a direct-fit option for several Spicer axle configurations used in heavy-duty truck applications.

Key Features

• National 710045 axle spindle seal for front outer axle service
• Nitrile material for sealing performance in driveline applications
• 2.840 in. outside diameter, 2.835 in. housing bore, 2.250 in. shaft size
• 0.500 in. width for specified axle and spindle dimensions
• Oil seal design in the National 710000 series
• Cross-references SKF 400659 for the same application

Detailed Description

National 710045 is an axle spindle seal engineered for front outer positions on compatible heavy-duty trucks, including Ford F-250, Ford F-350, Dodge W250, Dodge W350, Chevrolet K30, Chevrolet V30, Chevrolet V3500, and GMC V3500 applications listed below. It is built around a VRS1 type profile and nitrile sealing material, with dimensions that match the specified housing bore and shaft requirements for select Spicer axle assemblies. National has focused on sealing solutions for decades, and this part reflects that experience in a practical OE-style replacement format. This part number, 710045, is also referenced in interchange listings for related applications.

What It Helps Address

• Gear oil seepage at the front outer spindle area
• Contamination entering the axle hub or bearing area
• Seal wear from age, heat, and road exposure
• Loss of sealing integrity on specified Spicer front axle setups
• Service replacement needs for National 710045 applications

Installation Notes and Fitment

Compatible With the following front outer applications:

• Fits 1986-1993 Dodge W250, Front Outer, with Spicer 60-F Axle(s); with 9.75 (in) Ring Gear
• Fits 1986-1993 Dodge W350, Front Outer, with Spicer 60-F Axle(s); with 9.75 (in) Ring Gear
• Fits 1980-1992 Ford F-250, Front Outer, with Spicer 50.5 Axle(s); with 9 (in) Ring Gear; Independent Front Suspension
• Fits 1989-1991 Chevrolet V3500, Front Outer, with Spicer 60-F Axle(s); with 9.75 (in) Ring Gear
• Fits 1985-1991 Ford F-350, Front Outer, with Spicer 60-7F Axle(s); with 9.75 (in) Ring Gear
• Fits 1987-1991 GMC V3500, Front Outer, with Spicer 60-F Axle(s); with 9.75 (in) Ring Gear
• Fits 1987-1988 Chevrolet V30, Front Outer, with Spicer 60-F Axle(s); with 9.75 (in) Ring Gear
• Fits 1977-1986 Chevrolet K30, Front Outer, with Spicer 60-F Axle(s); with 9.75 (in) Ring Gear
• Fits 1979-1986 GMC K3500, Front Outer, with Spicer 60-F Axle(s); with 9.75 (in) Ring Gear
• Fits 1980-1985 Ford F-350, Front Outer, with Spicer 50.5 Axle(s); with 9 (in) Ring Gear; Independent Front Suspension
• Fits 1978-1979 Ford F-250, Front Outer, with Spicer 60-3F Axle(s); with 9.75 (in) Ring Gear
• Fits 1978-1979 Ford F-350, Front Outer, with Spicer 60-3F Axle(s); with 9.75 (in) Ring Gear

Before installation, verify housing bore, shaft diameter, axle type, and ring gear configuration against the vehicle’s service information. Clean the sealing surface thoroughly and inspect the spindle and hub area for wear or scoring that could affect seal life. National 710045 is a direct replacement-style seal for the listed front outer axle positions.

Quality Assurance

National has supplied premium sealing solutions for more than 75 years, with product development focused on current vehicle service needs. National 710045 is part of the 710000 series and is built to the dimensional and material specifications listed above for consistent axle sealing performance.