National 222050 Manual Transmission Input Shaft Seal

Manual Transmission Input Shaft Seal for Volkswagen and Subaru

National 222050 is a metric manual transmission input shaft seal built with nitrile material for sealing the input shaft area in select Volkswagen and Subaru applications. It is specified as an oil seal with a 20.000 mm shaft size, 40.230 mm outside diameter, and 7.000 mm width for a precise service replacement.

Key Features

• Manual transmission input shaft seal for transmission sealing service
• Nitrile construction for oil resistance in drivetrain applications
• Metric dimensions: 20.000 mm inside diameter, 40.230 mm outside diameter, 7.000 mm width
• Housing bore size: 40.000 mm
• Part description: oil seal
• National 222050 for direct catalog lookup and cross-reference matching

Detailed Description

National 222050 is a transmission sealing component used at the manual transmission input shaft to help maintain proper lubricant retention and reduce contamination at the seal interface. The seal measures 0.787 inch inside diameter, 1.584 inch outside diameter, and 0.276 inch thickness, with metric equivalents listed for accurate identification. This part is cataloged for Volkswagen Beetle applications from 1950-1974 and 1975-1979 with VW 002 transmission notes, Volkswagen Vanagon from 1980-1991, and Subaru Standard models from 1976-1980 including listed T63W, T63A, and T71W transmission notes. This part cross-references Carlson 7940 and Continental 66621 for the same application. National 222050 is a practical replacement choice when servicing a manual transmission input shaft seal on Volkswagen Beetle, Volkswagen Vanagon, or Subaru Standard drivetrains.

What It Helps Address

• Transmission fluid seepage at the input shaft area
• Contamination entering the manual transmission through a worn seal
• Oil residue around the bellhousing or transmission case
• Seal wear from age, heat, and drivetrain movement
• Service replacement for a leaking Volkswagen or Subaru manual transmission seal

Installation Notes and Tips

Verify shaft diameter, housing bore, and transmission application before installation. Clean the seal bore and shaft surface thoroughly, and inspect for grooves, corrosion, or damage that could affect sealing performance. Confirm the vehicle and transmission code match the listed fitment, including VW 002, Subaru T63W, T63A, or T71W notes where applicable. For best results, install the seal squarely to avoid distortion of the nitrile sealing lip.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop sealing components for modern and legacy vehicles. Part number 222050 reflects that long-running focus on dimensional accuracy and drivetrain sealing performance.