National 1147 Manual Transmission Output Shaft Seal - Left or Right

Overview of National 1147 Manual Transmission Output Shaft Seal

The National 1147 manual transmission output shaft seal is engineered for reliable sealing performance in select Acura and Honda models. Designed to maintain transmission fluid integrity, this oil seal helps prevent leaks and protects your vehicle's manual transmission system.

• Inside diameter: 1.378 inches (35.000 mm)
• Outside diameter: 3.003 inches (76.280 mm)
• Thickness: 0.354 inches (9.000 mm)
• Sealing material: Polyacrylate for durability and resistance
• Clockwise-spiral lip design for effective sealing
• Compatible with housing bore of 2.992 inches (76.000 mm)
• Overall width with side lip: 0.492 inches (12.500 mm)

Technical Details and Material Specifications

The National 1147 output shaft seal is constructed from polyacrylate, a material known for its resistance to heat, oil, and wear, making it suitable for demanding transmission environments. The seal features a clockwise-spiral lip design that enhances sealing efficiency by directing fluid back into the transmission housing, reducing the risk of leaks. With precise dimensions including a 1.378-inch inside diameter and a 3.003-inch outside diameter, this seal fits tightly within the housing bore of 2.992 inches, ensuring a secure fit for manual transmission output shafts.

Compatible Vehicles and Applications

This manual transmission output shaft seal is compatible with various Acura and Honda models, including the Accord, Civic, Civic del Sol, CRX, EL, Integra, and Prelude. It is specifically designed to replace worn or damaged seals in these vehicles, helping maintain proper transmission function and fluid containment.

• Prevents transmission fluid leaks in manual transmissions
• Reduces contamination from dirt and debris entering the transmission
• Helps maintain optimal transmission performance and longevity
• Addresses issues related to worn or damaged output shaft seals
• Supports smooth operation of the manual transmission output shaft

Installation Notes and Tips

When installing the National 1147 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 orientation matches the clockwise-spiral lip design to optimize sealing performance. It is recommended to inspect the output shaft for wear or damage before installation to prevent premature seal failure.

Quality Assurance and Warranty

National parts are manufactured to meet industry standards for durability and performance. The 1147 output shaft seal undergoes quality control inspections to ensure dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in the product's reliability.