National 710485 Automatic Transmission Oil Pump Seal - Front

Overview of National 710485 Automatic Transmission Oil Pump Seal

The National 710485 automatic transmission oil pump seal is engineered to provide reliable sealing performance for select Ford vehicles. Designed with precision dimensions and durable polyacrylate material, this oil seal helps maintain transmission fluid integrity and prevent leaks in demanding applications.

• Inside diameter: 1.996 inches (50.700 mm)
• Outside diameter: 2.753 inches (69.920 mm)
• Thickness/width: 0.315 inches (8.000 mm)
• Sealing material: Polyacrylate for enhanced durability
• Compatible with Ford E-150, E-350 Club Wagon, E-350 Super Duty, Excursion, F-250 Super Duty, and F-350 Super Duty models

Detailed Product Description and Specifications

The National 710485 oil seal is part of the 710400 series and is specifically designed for automatic transmission oil pump applications. Its polyacrylate sealing material offers resistance to heat and transmission fluids, ensuring a tight seal around the shaft with an inside diameter of 1.996 inches (50.700 mm) and an outside diameter of 2.753 inches (69.920 mm). The seal thickness of 0.315 inches (8.000 mm) provides a robust barrier to prevent fluid leakage. The housing bore dimensions closely match the outside diameter, ensuring a secure fit within the transmission assembly.

Compatible Vehicles and Applications

This oil pump seal is compatible with a range of Ford vehicles, including:

• Ford E-150
• Ford E-350 Club Wagon
• Ford E-350 Super Duty
• Ford Excursion
• Ford F-250 Super Duty
• Ford F-350 Super Duty

It is designed to maintain transmission fluid containment and support the proper function of the automatic transmission oil pump in these models.

Common Issues Addressed by the National 710485 Seal

• Prevents transmission fluid leaks around the oil pump shaft
• Reduces risk of contamination entering the transmission system
• Maintains proper hydraulic pressure within the transmission
• Helps avoid premature transmission wear due to fluid loss
• Supports consistent transmission performance and longevity

Installation Notes and Tips

When installing the National 710485 automatic transmission oil pump seal, ensure the housing bore and shaft are clean and free of debris. Proper alignment during installation is critical to avoid seal damage. Use appropriate tools to press the seal evenly into the housing bore without distortion. Verify the seal dimensions match the original equipment specifications for the Ford model being serviced.

Quality Assurance and Warranty

Manufactured by National, a recognized brand in transmission sealing systems, the 710485 oil pump seal is produced to meet industry standards for durability and performance. The polyacrylate material is selected for its resistance to heat and transmission fluids. While specific warranty details are not provided, National products typically adhere to strict quality control processes to ensure reliability in automotive applications.