National 710306 Manual Transmission Output Shaft Seal

Overview of National Manual Transmission Output Shaft Seal 710306

The National 710306 manual transmission output shaft seal is engineered for reliable sealing performance in select Toyota models. Designed with precision, this oil seal helps maintain transmission integrity by preventing fluid leaks and contamination.

• Inside diameter: 1.260 inches (32.000 mm)
• Outside diameter: 2.055 inches (52.200 mm)
• Thickness: 0.433 inches (11.000 mm)
• Sealing material: Nitrile for durability and resistance
• Counter-clockwise spiral lip design for effective sealing
• Compatible housing bore: 2.047 inches (52.000 mm)

Detailed Product Description and Specifications

This National manual transmission output shaft seal (part number 710306) is constructed from nitrile, a material known for its resistance to oil, heat, and wear. The seal features a counter-clockwise spiral lip design that enhances sealing efficiency by directing contaminants away from the shaft. With an inside diameter of 1.260 inches and an outside diameter of 2.055 inches, it fits precisely within the housing bore of 2.047 inches, ensuring a secure fit. The 0.433-inch thickness provides adequate sealing surface area to maintain transmission fluid containment under operating conditions.

Compatible Toyota Models and Applications

This output shaft seal is compatible with a range of Toyota vehicles, including the 4Runner, Corolla, Pickup, Starlet, Tacoma, and Tercel. It is specifically designed for manual transmission systems requiring a 32 mm shaft seal, making it suitable for maintenance or repair of these models’ transmission output shafts.

Common Issues Addressed by the National 710306 Seal

• Prevents transmission fluid leaks from the output shaft area
• Reduces contamination ingress that can damage transmission components
• Minimizes wear on the output shaft by maintaining proper lubrication
• Helps maintain transmission pressure and performance
• Prevents premature transmission failure due to seal degradation

Installation Notes and Tips

• Ensure the housing bore and shaft are clean and free of debris before installation
• Use appropriate tools to avoid damaging the seal during installation
• Verify the seal orientation matches the counter-clockwise spiral lip design for optimal sealing
• Lubricate the sealing lip with transmission fluid prior to installation to reduce initial wear
• Check for proper fit and alignment to prevent leaks

Quality Assurance and Warranty Information

National manufactures the 710306 output shaft seal to meet industry standards for durability and performance. The nitrile material and design specifications ensure consistent sealing under normal operating conditions. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in product reliability.