National 710715 Automatic Transmission Output Shaft Seal - Left

Automatic Transmission Output Shaft Seal for Aisin Applications

National 710715 is an automatic transmission output shaft seal built for metric-fit applications that require a precise seal at the transmission shaft. It uses a polyacrylate sealing material and a counter-clockwise spiral lip design to help maintain a consistent seal at the output shaft area. This seal is a direct-fit service part for select Chevrolet, Pontiac, Suzuki, and related Aisin-equipped vehicles.

Key Features

• Automatic transmission output shaft seal / oil seal
• Part number: National 710715
• Polyacrylate construction for sealing performance
• Counter-clockwise spiral lip design
• Metric dimensions for accurate housing and shaft fit
• Inside diameter: 1.496 in. / 38.0 mm
• Outside diameter: 2.488 in. / 63.2 mm
• Width: 0.354 in. / 9.0 mm
• Overall width with side lip: 0.591 in. / 15.0 mm
• Housing bore: 2.480 in. / 63.0 mm

Detailed Description

National 710715 is engineered as a metric automatic transmission output shaft seal for vehicles using Aisin 80-40LE and 81-40LE transmissions. The seal’s 38 mm shaft size, 63.2 mm outside diameter, and 9 mm width provide the dimensional accuracy needed for a proper transmission case fit. National’s sealing expertise spans more than 75 years, and this oil seal reflects that focus on durable sealing solutions for modern drivetrains. This part cross-references Dorman - HELP 14963 for the same application. Fits 2013 Chevrolet Spark, left; fits 2009-2011 Chevrolet Aveo, left; and fits 2004-2010 Suzuki Swift+, left, among other listed Aisin-equipped applications. The National 710715 part number is also commonly searched by buyers servicing Chevrolet Aveo, Chevrolet Aveo5, Pontiac G3, Pontiac Wave, Pontiac Wave5, Suzuki Forenza, and related models.

Common Uses

• Replacing a leaking transmission output shaft seal
• Addressing fluid seepage at the transmission case
• Restoring sealing at the output shaft area after wear
• Repairing transmission service issues on Aisin 80-40LE and 81-40LE units
• Supporting maintenance on Chevrolet Aveo, Aveo5, Spark, Pontiac G3, and Suzuki Swift+ applications

Installation Notes and Tips

Verify shaft diameter, housing bore, and transmission type before installation. Clean the seal bore and shaft surface thoroughly, and inspect for scoring or wear that could affect sealing performance. Confirm left-side application and transmission code on the vehicle before ordering. For best results, install the seal squarely to avoid lip damage during seating.

Quality Assurance

National is a long-established sealing brand with a focus on premium sealing solutions and ongoing product development for current vehicle platforms. National 710715 is built to meet the dimensional and material requirements of the listed transmission applications.