National 710485 Automatic Transmission Oil Pump Seal - Front

Automatic Transmission Oil Pump Seal for Ford

National 710485 is an automatic transmission oil pump seal built for front-position applications on select Ford trucks and vans. It uses polyacrylate sealing material and precise dimensional sizing to support a proper seal at the pump interface.

With an inside diameter of 1.996 in. (50.700 mm), outside diameter of 2.753 in. (69.920 mm), and width of 0.315 in. (8.000 mm), this seal is sized for the specified housing bore and shaft dimensions. National 710485 is a direct-fit sealing component for Ford E-350 Super Duty, F-250 Super Duty, F-350 Super Duty, E-150, E-350 Club Wagon, and Excursion front applications listed below.

Key Features

• Automatic transmission oil pump seal for front-position service
• Polyacrylate sealing material for transmission sealing applications
• Inside diameter: 1.996 in. / 50.700 mm
• Outside diameter: 2.753 in. / 69.920 mm
• Width: 0.315 in. / 8.000 mm
• Housing bore: 2.745 in. / 69.720 mm
• National part number 710485

Detailed Description

National 710485 is part of National’s 710400 series and is engineered as an oil seal for automatic transmission pump service. The polyacrylate sealing material is selected for transmission environments where dimensional accuracy and sealing integrity matter. This seal matches the listed shaft and housing bore dimensions, helping maintain a consistent fit in the pump area.

Fits 2004-2016 Ford E-350 Super Duty, front. Fits 2006-2010 Ford F-250 Super Duty, front. Fits 2006-2010 Ford F-350 Super Duty, front. Fits 2007 Ford E-150, front. Fits 2004-2005 Ford E-350 Club Wagon, front. Fits 2003-2005 Ford Excursion, front, with Ford 5R110W Transmission. Fits 2003-2005 Ford F-250 Super Duty, front, with Ford 5R110W Transmission. Fits 2003-2005 Ford F-350 Super Duty, front, with Ford 5R110W Transmission. This part cross-references Davico Mfg 19568 for the same application.

Common Uses

• Replacing a worn or hardened transmission pump seal
• Addressing fluid seepage at the front of the transmission
• Restoring sealing performance during transmission service
• Supporting repair work on Ford Super Duty and van applications
• Correcting seal wear related to age, heat, or mileage

Installation Notes and Tips

Verify the shaft diameter, housing bore, and seal orientation before installation. Clean the pump bore and surrounding surfaces thoroughly, and inspect the shaft and pump area for scoring or wear that could affect sealing. Use proper transmission service procedures and confirm the seal seats evenly to avoid distortion.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop sealing components for modern vehicle applications. Part number 710485 reflects that long-running focus on dimensional accuracy and transmission sealing performance.