National 710977 Automatic Transmission Output Shaft Seal - Right

Automatic transmission output shaft seal

National 710977 is an automatic transmission output shaft seal for vehicles equipped with the Mitsubishi F4A42 transmission. It is built for direct sealing service where the output shaft passes through the transmission case, helping maintain fluid control in the drivetrain.

• Fits a range of Kia, Hyundai, Chrysler, Dodge, and Mitsubishi applications with the Mitsubishi F4A42 transmission.
• Output shaft seal design helps retain transmission fluid at the shaft opening.
• National sealing solution backed by more than 75 years of sealing experience.
• Part number 710977 for accurate catalog matching and service lookup.

Fitment details

Compatible with multiple right-side applications, including Fits 2007-2012 Kia Rondo, right; Fits 2001-2006 Hyundai Elantra, right; Fits 2001-2006 Kia Magentis, right; Fits 2001-2006 Kia Optima, right; Fits 2004-2006 Kia Spectra, right; Fits 2005-2006 Kia Spectra5, right; Fits 2001-2005 Chrysler Sebring, right; Fits 2001-2005 Dodge Stratus, right; Fits 1999-2005 Hyundai Sonata, right; Fits 1999-2003 Mitsubishi Eclipse, right; Fits 1999-2003 Mitsubishi Galant, right; Fits 2002-2003 Mitsubishi Lancer, right; Fits 1998-2002 Mitsubishi Mirage, right.

This part cross-references 4311928010 and SKF 13784A for the same application.

Common repair uses

• Transmission fluid seepage at the output shaft area.
• Seal wear from age, heat, and normal drivetrain operation.
• Service replacement during transmission maintenance or rebuild work.
• Leak diagnosis when fluid is present around the transmission case opening.

Installation notes

Confirm the transmission code before ordering, since this seal is specified for Mitsubishi F4A42-equipped applications only. Inspect the shaft surface and seal bore for wear or damage before installation, and replace any contaminated fluid as part of the repair.

Quality assurance

National has supplied sealing products for more than 75 years and continues to develop sealing solutions for modern vehicles. Part number 710977 is cataloged for the listed fitments and cross-references to established aftermarket and OE-style numbers.