National 1177 Manual Transmission Output Shaft Seal - Front Outer or Rear Outer

Overview of National 1177 Manual Transmission Output Shaft Seal

The National 1177 manual transmission output shaft seal is engineered to provide reliable sealing performance for select Toyota and Lexus vehicles. Designed with durable polyacrylate material, this oil seal helps maintain transmission integrity by preventing fluid leaks and contamination.

• Inside diameter: 1.496 inches (38.000 mm)
• Outside diameter: 2.924 inches (74.270 mm)
• Thickness/width: 0.433 inches (11.000 mm)
• Sealing material: Polyacrylate for enhanced durability
• Compatible with various Toyota and Lexus models including 4Runner, Corolla, Supra, LS400, and more

Detailed Product Description and Specifications

The National 1177 output shaft seal is part of the 1000 series and is specifically designed for manual transmissions. Its polyacrylate sealing material offers resistance to heat and wear, ensuring a tight seal around the transmission output shaft. With an inside diameter of 1.496 inches (38 mm) and an outside diameter of 2.924 inches (74.27 mm), this seal fits precisely into the housing bore measuring approximately 2.913 inches (74 mm). The 0.433 inch (11 mm) thickness provides a robust barrier against oil leaks, helping to maintain optimal transmission performance.

Compatible Vehicles and Applications

This output shaft seal is compatible with a range of Toyota and Lexus models, including but not limited to:

• Toyota 4Runner, Celica, Corolla, Corona, Cressida, Land Cruiser, Pickup, Supra, T100, Van
• Lexus LS400, LX450, LX470

Using the National 1177 seal ensures proper fitment and reliable sealing for these manual transmission applications.

Common Issues Addressed by the National 1177 Seal

• Prevents transmission fluid leaks from the output shaft area
• Reduces contamination ingress that can damage transmission components
• Maintains proper lubrication within the transmission system
• Helps avoid premature wear of transmission bearings and gears
• Supports consistent transmission performance and longevity

Installation Notes and Tips

• Ensure the transmission output shaft and housing bore are clean and free of debris before installation
• Use appropriate tools to press the seal evenly into the housing bore without distortion
• Verify the seal orientation matches manufacturer specifications to prevent leaks
• Inspect the shaft for wear or damage that could compromise the seal
• Replace any worn or damaged components during installation for optimal results

Quality Assurance and Warranty Information

National manufactures the 1177 output shaft seal to meet industry standards for durability and performance. The polyacrylate material is selected for its resistance to heat and wear, contributing to a reliable seal life. While specific warranty details may vary, National typically offers coverage against manufacturing defects to ensure customer confidence in the product.