National 711022 Automatic Transmission Torque Converter Seal

National 711022 Torque Converter Seal

National 711022 is an automatic transmission torque converter seal built for metric applications that require a precise sealing fit. It uses a fluoro-elastomer sealing material and a clockwise-spiral lip design to help maintain a tight seal at the transmission housing and shaft interface.

Compatible with select Ford Fusion, Ford Escape, Ford Edge, Ford Transit Connect, Lincoln MKZ, Lincoln MKC, and Ford EcoSport applications, this seal is a direct-fit service part for vehicles in the 2012-2019 model years. The National 711022 part number is also referenced in OE-style service searches for these applications.

Key Features

• Automatic transmission torque converter seal for metric service applications
• Fluoro-elastomer material for sealing performance in transmission environments
• Clockwise-spiral lip design for controlled sealing contact
• Inside diameter: 1.575 in. / 40.000 mm
• Outside diameter: 2.567 in. / 65.200 mm
• Housing bore: 2.559 in. / 65.000 mm
• Width: 0.256 in. / 6.500 mm
• Overall width with side lip: 0.413 in. / 10.500 mm
• National 711022 and series 711000 service identification

Detailed Description

National 711022 is an oil seal used in automatic transmission torque converter sealing applications where dimensional accuracy matters. The seal measures 1.575 inches on the shaft side, 2.567 inches on the outside diameter, and 0.256 inches in width, with metric equivalents provided for service matching. Its flanged outside diameter is 2.657 inches, and the housing bore specification is 2.559 inches, helping confirm proper fit during transmission repair.

National has supplied sealing solutions for more than 75 years, and this part reflects that focus on transmission sealing components. For buyers searching National 711022 for Ford Fusion or Lincoln MKZ service, the listed dimensions and spiral-lip construction help identify the correct torque converter seal for the application.

This part cross-references 9L8P-7A248-BB and 9L8Z-7A248-F for the same application.

Vehicle Fitment

• Fits 2019 Ford EcoSport, N/A
• Fits 2012-2019 Ford Fusion, N/A
• Fits 2014-2019 Ford Transit Connect, N/A
• Fits 2017-2019 Lincoln MKZ, N/A
• Fits 2013-2015 Ford Edge, N/A
• Fits 2012-2015 Ford Escape, N/A
• Fits 2015 Lincoln MKC, N/A

What It Helps Address

• Transmission fluid leakage at the torque converter seal area
• Seal wear from age, heat, and fluid exposure
• Improper sealing caused by dimensional mismatch
• Service replacement needs during transmission repair
• Fluid seepage that can affect transmission cleanliness

Installation Notes and Tips

Verify shaft, housing bore, and outside diameter measurements before installation. Clean the sealing surface and inspect the transmission bore for scoring or contamination before pressing the seal into place. Confirm the seal orientation matches the application and use care to avoid damaging the lip during installation.

Quality Assurance

National is known for sealing products used in automotive service, and this torque converter seal is built to meet the dimensional and material requirements of the listed Ford and Lincoln applications. Review the vehicle fitment and measurements against the original part before installation.