National 710109 Manual Transmission Output Shaft Seal - Left

Overview of National 710109 Manual Transmission Output Shaft Seal

The National 710109 manual transmission output shaft seal is engineered to provide reliable sealing performance for select Chevrolet, Geo, Pontiac, and Toyota models. Designed with precision dimensions and durable polyacrylate material, this oil seal helps maintain transmission integrity and prevent fluid leaks.

• Inside diameter: 1.339 inches (34.000 mm)
• Outside diameter: 2.484 inches (63.090 mm)
• Thickness: 0.354 inches (9.000 mm)
• Overall width with side lip: 0.610 inches (15.500 mm)
• Sealing material: Polyacrylate with bi-directional lip design
• Compatible housing bore: 2.480 inches (63.000 mm)
• Part number: 710109

Technical Description and Material Specifications

This National 710109 output shaft seal is constructed from polyacrylate, a material known for its resistance to heat, oil, and wear, making it suitable for manual transmission applications. The bi-directional lip design enhances sealing efficiency by preventing oil leakage in both rotational directions. The seal’s precise dimensions, including a 1.339-inch inside diameter and 2.484-inch outside diameter, ensure a secure fit within the transmission housing bore of 2.480 inches.

Compatible Vehicles and Applications

This manual transmission output shaft seal is compatible with various models from Chevrolet, Geo, Pontiac, and Toyota. Specifically, it fits Chevrolet Nova, Geo Prizm, Pontiac Vibe, and Toyota Celica, Corolla, Matrix, MR2, Paseo, and Tercel models. The part number 710109 is designed to meet the OEM specifications for these vehicles, ensuring proper fit and function.

Common Issues Addressed by the Output Shaft Seal

• Prevents manual transmission fluid leaks around the output shaft
• Reduces contamination ingress into the transmission system
• Maintains proper lubrication within the transmission
• Helps avoid premature wear of transmission components
• Supports smooth operation of the output shaft

Installation Notes and Tips

When installing the National 710109 output shaft seal, ensure the transmission housing bore is clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the sealing lip. Verify the seal’s orientation matches the bi-directional lip design for optimal sealing performance. It is recommended to inspect the output shaft for wear or damage before installation to prevent future leaks.

Quality Assurance and Warranty

National manufactures the 710109 output shaft seal to meet industry standards for durability and performance. The polyacrylate material and precise engineering contribute to a reliable sealing solution for manual transmissions. While specific warranty details may vary, National typically offers coverage against manufacturing defects to ensure customer confidence in the product.