National 711020 Automatic Transmission Output Shaft Seal - Right Inner

Automatic Transmission Output Shaft Seal for Aisin TF-60SN

The National 711020 automatic transmission output shaft seal is built for precise sealing at the transmission output shaft. It uses a clockwise-spiral lip design and polyacrylate material to help maintain a tight seal in demanding drivetrain service.

Compatible with select Volkswagen CC, Volkswagen Tiguan, Audi A3 Quattro, and Volkswagen Passat CC applications with the Aisin TF-60SN transmission, this seal is sized to match the specified metric housing and shaft dimensions for a proper service replacement.

Key Features

• Part number: National 711020
• Automatic transmission output shaft seal / oil seal
• Clockwise-spiral lip design for controlled sealing action
• Polyacrylate construction for transmission sealing service
• Metric dimensions: 74.000 mm housing bore, 74.200 mm outside diameter
• Shaft size: 62.000 mm
• Overall width with side lip: 12.500 mm
• Series 711000 design

Detailed Description

National 711020 is an automatic transmission output shaft seal engineered for vehicles using the Aisin TF-60SN transmission. The seal’s clockwise-spiral lip design helps manage fluid sealing at the shaft interface, while the polyacrylate material supports transmission sealing performance in a metric OE-style format. This part number is a direct service option for applications such as 2009-2015 Volkswagen CC right inner, 2009-2015 Volkswagen Tiguan right inner, 2006-2013 Audi A3 Quattro right inner, and 2009-2010 Volkswagen Passat CC right inner, all with the Aisin TF-60SN transmission. National 711020 is also referenced by part numbers 09M-321-243A and B37209 for the same application.

Common Issues This Seal Can Address

• Transmission fluid leakage at the output shaft area
• Seal wear from age, heat, and fluid exposure
• Drivetrain service needs during transmission repair
• Loss of sealing integrity around the shaft bore

Installation Notes and Tips

Verify the transmission code and shaft dimensions before installation. Inspect the shaft surface and housing bore for scoring, contamination, or corrosion, and replace the seal only after the mating surfaces are clean and dry. Proper alignment during installation is important to avoid damaging the lip design and to maintain sealing performance.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop designs for modern vehicle service needs. The 711020 reflects that experience with a metric transmission seal built for specified OE-style fitment.