National 710540 Automatic Transmission Output Shaft Seal

Overview of National 710540 Automatic Transmission Output Shaft Seal

The National 710540 automatic transmission output shaft seal is engineered for reliable sealing performance in Ford vehicles, specifically the Focus and Transit Connect models. Designed to maintain transmission fluid integrity, this seal helps prevent leaks and ensures smooth operation of your vehicle's transmission system.

• Inside diameter: 1.575 inches (40 mm)
• Outside diameter: 2.209 inches (56.12 mm)
• Flanged outside diameter: 2.480 inches (63 mm)
• Thickness: 0.394 inches (10 mm)
• Overall width with side lip: 0.669 inches (17 mm)
• Material: Polyacrylate for durability and resistance
• Bi-directional lip design for effective sealing
• Compatible with Ford Focus and Transit Connect transmissions

Technical Details and Design Features

This National 710540 transmission output shaft seal features a bi-directional lip design that provides enhanced sealing capability against fluid leaks in both rotational directions. Constructed from polyacrylate material, the seal offers resistance to heat, wear, and transmission fluids, contributing to a longer service life. The precise dimensions, including a 1.575-inch inside diameter and a 2.209-inch outside diameter, ensure a proper fit within the housing bore of 2.206 inches (56 mm), matching the specifications required for Ford Focus and Transit Connect automatic transmissions.

Compatible Vehicles and Applications

This automatic transmission output shaft seal is specifically compatible with Ford vehicles, including the Focus and Transit Connect models. It is designed to replace worn or damaged seals in the transmission output shaft area, helping to maintain fluid containment and prevent contamination.

• Prevents transmission fluid leaks from the output shaft
• Reduces risk of transmission damage due to fluid loss
• Helps maintain proper transmission pressure and performance
• Protects internal components from dirt and debris ingress
• Addresses common seal wear and tear issues in Ford Focus and Transit Connect transmissions

Installation Notes and Tips

When installing the National 710540 output shaft seal, ensure the transmission housing bore is clean and free of debris. Use appropriate tools to avoid damaging the seal during installation. Verify the seal’s orientation, taking advantage of the bi-directional lip design for optimal sealing. Lubricate the seal lip lightly with transmission fluid before installation to reduce initial wear and facilitate proper seating.

Quality Assurance and Warranty Information

National transmission seals are manufactured to meet OEM specifications, ensuring reliable performance and durability. The 710540 seal undergoes rigorous quality control to maintain dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in product reliability.