National 710808 Manual Transmission Output Shaft Seal

Reliable Manual Transmission Output Shaft Seal for Dodge and Ford Vehicles

The National 710808 manual transmission output shaft seal is engineered to provide effective sealing for various Dodge, Ford, Jaguar, Lincoln, and Mercury models. Designed with precision and durable polyacrylate material, this oil seal helps maintain transmission integrity and prevent fluid leaks.

• Constructed from durable polyacrylate material for long-lasting performance
• Bi-directional lip design ensures effective sealing under varying rotational directions
• Inside diameter of 1.575 inches (40.000 mm) fits output shafts precisely
• Outside diameter measures 2.170 inches (55.100 mm) with a flanged outside diameter of 2.449 inches (62.200 mm)
• Thickness of 0.472 inches (12.000 mm) with an overall width including side lip of 0.512 inches (13.000 mm)
• Compatible with housing bore size of 2.165 inches (55.000 mm)

Detailed Product Description and Specifications

The National 710808 output shaft seal is part of the 710800 series, designed specifically for manual transmissions requiring reliable sealing solutions. Its polyacrylate construction offers resistance to heat and wear, suitable for demanding automotive environments. The bi-directional lip design provides a secure seal against oil leakage regardless of shaft rotation direction, which is critical for maintaining transmission fluid levels and preventing contamination.

With precise dimensions including a 1.575-inch (40 mm) inside diameter and a 2.170-inch (55.1 mm) outside diameter, this seal fits tightly within the housing bore of 2.165 inches (55 mm). The flanged outside diameter of 2.449 inches (62.2 mm) ensures proper seating and stability during operation. The overall width of 0.512 inches (13 mm) including the side lip contributes to a secure fit and effective sealing surface.

Compatible Vehicles and Applications

This manual transmission output shaft seal is compatible with a range of vehicles, including:

• Dodge Caliber
• Ford Focus and Contour
• Jaguar S-Type and X-Type
• Lincoln LS
• Mercury Cougar, Mystique, and Tracer

It is designed to replace worn or damaged seals in these models, helping to maintain transmission performance and prevent fluid leaks.

Common Issues Addressed by the National 710808 Seal

• Prevents transmission fluid leaks from the output shaft area
• Reduces contamination of transmission internals by sealing out dirt and debris
• Minimizes wear on transmission components by maintaining proper lubrication
• Helps avoid costly transmission repairs caused by fluid loss
• Maintains consistent transmission performance and reliability

Installation Notes and Tips

Ensure the housing bore and shaft surfaces are clean and free of debris before installation. Verify the seal dimensions match the application requirements, particularly the inside diameter and housing bore size. Use appropriate tools to press the seal evenly into the bore without damaging the sealing lip. Avoid excessive force or misalignment during installation to maintain seal integrity.

Quality Assurance and Warranty

National parts are manufactured to meet industry standards for durability and performance. The 710808 manual transmission output shaft seal undergoes quality control inspections to ensure dimensional accuracy and material consistency. While specific warranty details are not provided, National products typically come with manufacturer-backed quality assurance to support reliable operation in compatible Dodge, Ford, Jaguar, Lincoln, and Mercury vehicles.