National 711068 Manual Transmission Output Shaft Seal

Overview of National 711068 Manual Transmission Output Shaft Seal

The National 711068 manual transmission output shaft seal is engineered to provide reliable sealing performance for select Cadillac, Chevrolet, Dodge, and Pontiac vehicles. Designed with precision dimensions and durable materials, this oil seal helps maintain transmission integrity and prevent fluid leaks.

• Inside diameter: 1.732 inches (44.000 mm)
• Outside diameter: 2.449 inches (62.200 mm)
• Thickness/width: 0.295 inches (7.500 mm)
• Material: Fluoro-elastomer for enhanced chemical and temperature resistance
• Bi-directional lip design for effective sealing under varying rotational directions
• Housing bore diameter: 2.441 inches (62.000 mm)
• Part number: 711068, Series 711000

Technical Details and Material Specifications

This manual transmission output shaft seal features a fluoro-elastomer construction, which offers superior resistance to heat, oil, and other automotive fluids commonly encountered in transmission environments. The bi-directional lip design ensures a tight seal around the output shaft, accommodating rotational forces in both directions. With an inside diameter of 1.732 inches and an outside diameter of 2.449 inches, this seal fits precisely within the housing bore of 2.441 inches, providing a secure fit that minimizes leakage risks. The 0.295-inch thickness balances durability with flexibility to maintain sealing integrity over time.

Compatible Vehicles and Applications

This National 711068 output shaft seal is compatible with manual transmissions in various models, including Cadillac ATS and CTS, Chevrolet Camaro and SS, Dodge Challenger, and Pontiac G8. It is specifically designed to replace worn or damaged seals in these vehicles, helping to maintain proper transmission fluid containment and prevent contamination.

• Prevents transmission fluid leaks from the output shaft area
• Reduces risk of contamination entering the transmission
• Helps maintain proper lubrication and transmission performance
• Addresses wear-related seal failures and shaft seal damage
• Supports smooth manual transmission operation

Installation Notes and Tips

When installing the National 711068 output shaft seal, ensure the transmission output shaft and housing bore are clean and free of debris. Use appropriate tools to press the seal evenly into the bore without distortion. Verify the seal’s orientation matches the bi-directional lip design for optimal sealing. It is recommended to inspect the shaft surface for wear or damage before installation to prevent premature seal failure.

Quality Assurance and Warranty Information

Manufactured by National, a recognized brand in transmission sealing systems, the 711068 output shaft seal meets industry standards for durability and performance. The fluoro-elastomer material and precise engineering contribute to long service life under normal operating conditions. Warranty coverage details should be confirmed with the original equipment manufacturer or distributor.