National 222050 Manual Transmission Input Shaft Seal

Overview of National Manual Transmission Input Shaft Seal 222050

The National 222050 manual transmission input shaft seal is engineered to provide reliable sealing performance for select Subaru and Volkswagen vehicles. Designed with durable nitrile material, this oil seal helps maintain transmission integrity by preventing fluid leaks and contamination.

• Constructed from high-quality nitrile for resistance to oil and wear
• Inside diameter of 0.787 inches (20 mm) to fit the input shaft precisely
• Outside diameter measures 1.584 inches (40.23 mm) for secure housing fit
• Seal thickness of 0.276 inches (7 mm) ensures proper sealing depth
• Compatible with Subaru and Volkswagen models including Beetle, Standard, and Vanagon

Technical Details and Specifications

This National input shaft seal (part number 222050) belongs to the 220000 series and is specifically designed for manual transmissions. The seal features a 35-type design optimized for sealing the input shaft bore, which measures approximately 1.575 inches (40 mm). The nitrile material offers excellent resistance to transmission fluids and temperature variations, making it suitable for demanding automotive environments. The precise dimensions ensure a tight fit around the 0.787 inch (20 mm) shaft, minimizing the risk of leaks and contamination.

Applications and Problem Solving

This manual transmission input shaft seal is used to maintain the integrity of the transmission system by preventing oil leaks and ingress of dirt or debris. It is compatible with the following vehicles:

• Subaru manual transmissions requiring a 20 mm input shaft seal
• Volkswagen Beetle manual transmission input shaft sealing
• Volkswagen Standard and Vanagon models with matching shaft dimensions

Common issues addressed by this seal include:

• Transmission fluid leaks around the input shaft
• Contamination of transmission internals by dirt or moisture
• Premature wear of transmission components due to inadequate sealing
• Noise or vibration caused by fluid loss or seal failure

Installation Notes and Tips

When installing the National 222050 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 original part to maintain proper fluid retention. It is recommended to inspect the input shaft for wear or damage before installation to ensure optimal sealing performance.

Quality Assurance and Warranty

National manufactures this input shaft seal to meet industry standards for durability and performance. The nitrile material and precise dimensions contribute to consistent sealing under normal operating conditions. While specific warranty details are not provided, National products typically adhere to quality control processes to ensure reliability in automotive applications.