National 710561 Automatic Transmission Torque Converter Seal

Automatic Transmission Torque Converter Seal

National 710561 is an automatic transmission torque converter seal built for select Ford, Lincoln, Chevrolet, GMC, Buick, Cadillac, and related applications. It uses a fluoro-elastomer sealing material and a clockwise-spiral lip design to help maintain a consistent seal at the torque converter interface.

National has supplied sealing solutions for more than 75 years, and this seal reflects that focus with OE-style dimensions and application-specific fitment for vehicles such as the Ford Edge, Ford Explorer, Lincoln MKZ, and Chevrolet Impala.

Key Features

• Part number 710561
• Automatic transmission torque converter seal / oil seal
• Fluoro-elastomer material for transmission sealing applications
• Clockwise-spiral lip design
• Inside diameter: 2.059 in. (52.300 mm)
• Outside diameter: 2.852 in. (72.450 mm)
• Flanged outside diameter: 3.071 in. (78.000 mm)
• Thickness / width: 0.398 in. (10.100 mm)
• Housing bore: 2.846 in. (72.300 mm)
• Series 710500

Detailed Description

National 710561 is a transmission torque converter seal engineered around precise dimensional requirements for the housing bore, shaft diameter, and seal width. The fluoro-elastomer construction is selected for sealing performance in automatic transmission environments, while the spiral lip profile supports controlled sealing contact during operation. This part cross-references SKF 20724A for the same application. Use National 710561 when servicing vehicles that call for this seal in Ford 6F50, Ford 6F55, GMC 6T70, GMC 6T75, or GMC 6T80 transmission applications.

Compatible vehicle coverage includes 2016-2019 Cadillac XTS, 2012-2019 Chevrolet Impala, 2017-2019 Ford Flex, 2016-2019 Ford Taurus, 2007-2019 GMC Acadia, 2017-2019 Lincoln Continental, 2016-2019 Lincoln MKT, and 2016-2019 Lincoln MKZ. It also applies to long-running service applications such as the Ford Edge, Ford Explorer, Chevrolet Equinox, Chevrolet Traverse, Buick Enclave, and GMC Terrain.

What It Helps Address

• Transmission fluid leakage at the torque converter seal area
• Seal wear from age, heat, and fluid exposure
• Loss of sealing integrity during transmission service
• Drivability issues caused by low transmission fluid level from seepage
• Repeat repairs when the original seal no longer holds proper contact

Installation Notes and Tips

Verify shaft, housing bore, and seal dimensions before installation. Inspect the torque converter hub and transmission bore for scoring, corrosion, or contamination that could affect sealing performance. Clean the sealing surfaces thoroughly and install the seal squarely to avoid lip damage. Confirm the transmission code and application notes for vehicles such as the Ford Edge, Ford Explorer, and Chevrolet Impala before service.

Quality Assurance

National has built its reputation on premium sealing solutions for more than 75 years, with product development that keeps pace with modern vehicle requirements. National 710561 is designed to meet the dimensional and material demands of today’s automatic transmission service work.