National 710997 Automatic Transmission Output Shaft Seal - Left

Automatic Transmission Output Shaft Seal for Hyundai and Kia

National 710997 is an automatic transmission output shaft seal built for metric applications that require a precise shaft-to-housing seal. It features a polyacrylate construction and a counter-clockwise spiral lip design to help maintain sealing performance at the transmission output shaft.

Compatible with select Hyundai Accent, Elantra, Kona, Veloster, Tucson, Elantra Coupe, and Elantra GT models, as well as Kia Rio, Soul, Forte, and Forte5 applications, National 710997 is a direct-fit oil seal for left-side transmission service. This part number 710997 is also referenced by OE and aftermarket cross numbers for the same application.

Key Features

• Automatic transmission output shaft seal / oil seal
• Polyacrylate sealing material for transmission service
• Counter-clockwise spiral lip design
• Metric dimensions for accurate fitment
• Inside diameter: 1.457 in. / 37.0 mm
• Outside diameter: 2.449 in. / 62.2 mm
• Width: 0.394 in. / 10.0 mm
• Overall width with side lip: 0.669 in. / 17.0 mm
• Housing bore: 2.441 in. / 62.0 mm

Detailed Description

National 710997 is part of National’s 710900 series and is engineered as a metric transmission oil seal for the output shaft area. The seal measures 37.0 mm inside diameter, 62.2 mm outside diameter, and 10.0 mm width, with a 62.0 mm housing bore and a 17.0 mm overall width including the side lip. Its counter-clockwise spiral lip design supports proper sealing orientation in the specified left-side applications.

This part number 710997 cross-references SKF 14452A and Timken SL260123 for the same application. It is a practical replacement choice for transmission service on 2011-2019 Hyundai Elantra, 2012-2019 Hyundai Accent, 2018-2019 Hyundai Kona, 2019 Hyundai Veloster, 2018 Hyundai Tucson, 2013 Hyundai Elantra Coupe, 2013 Hyundai Elantra GT, 2012-2019 Kia Rio, 2012-2019 Kia Soul, 2014-2018 Kia Forte, and 2016-2017 Kia Forte5, all in the left position.

What This Seal Helps Address

• Transmission fluid leakage at the output shaft
• Seal wear from age, heat, and fluid exposure
• Loss of sealing integrity around the shaft opening
• Service issues during transmission reseal work
• Replacement needs on left-side output shaft applications

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal orientation before installation. Clean the sealing surface and bore thoroughly, and inspect the shaft for grooves or damage that could affect sealing. Confirm the left-side application and match the metric dimensions to the original seal before assembly.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop sealing components for modern vehicles. National 710997 reflects that experience with a transmission-focused design for specified Hyundai and Kia applications.