National 223012 Manual Transmission Input Shaft Seal - Front

Overview of National 223012 Manual Transmission Input Shaft Seal

The National 223012 manual transmission input shaft seal is engineered to provide reliable sealing performance for various Ford, Kia, Mazda, and Mercury vehicles. Designed with precision, this oil seal helps maintain transmission integrity by preventing fluid leaks and contamination.

• Inside diameter: 1.181 inches (30.000 mm)
• Outside diameter: 1.740 inches (44.200 mm)
• Thickness: 0.276 inches (7.000 mm)
• Sealing material: Polyacrylate for durability and resistance
• Clockwise-spiral lip design for effective sealing
• Compatible housing bore: 1.732 inches (44.000 mm)

Technical Details and Material Specifications

This National 223012 input shaft seal features a polyacrylate sealing material known for its resistance to heat, oil, and wear, ensuring long-lasting performance in manual transmissions. The clockwise-spiral lip design enhances sealing efficiency by maintaining consistent contact with the shaft, reducing the risk of leaks. With an inside diameter of 1.181 inches and an outside diameter of 1.740 inches, this seal fits precisely within the housing bore of 1.732 inches, providing a secure fit for the input shaft.

Compatible Vehicles and Applications

This manual transmission input shaft seal is compatible with a range of Ford, Kia, Mazda, and Mercury models, including but not limited to Ford F-150, Explorer, Bronco, and Escort; Mazda 323, 626, Miata, and MX-6; Mercury Cougar and Lynx; and Kia Sephia and Festiva. The part number 223012 ensures you are selecting the correct seal for these specific applications.

Common Issues Addressed by the National 223012 Seal

• Prevents transmission fluid leaks that can cause low fluid levels
• Protects against dirt and debris entering the transmission system
• Reduces wear on the input shaft by maintaining proper lubrication
• Helps avoid costly transmission repairs due to seal failure
• Maintains optimal transmission performance and longevity

Installation Notes and Tips

When installing the National 223012 input 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 for proper function. It is recommended to inspect the input shaft for wear or damage before installation to ensure a proper seal.

Quality Assurance and Warranty

National manufactures the 223012 input shaft seal to meet industry standards for durability and performance. The polyacrylate material and precise engineering contribute to a reliable sealing solution. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in product quality.