National 710629 Automatic Transmission Output Shaft Seal - Left

National 710629 Output Shaft Seal

National 710629 is an automatic transmission output shaft seal built for metric applications that require a 35.000 mm shaft diameter and a 76.200 mm outside diameter. It is a left-position seal used on select Honda and Acura vehicles, including Honda Civic, Honda Insight, Honda CR-Z, and Acura ILX applications.

Key Features

• Automatic transmission output shaft seal for transmission sealing service
• Polyacrylate material for sealing performance in transmission environments
• Counter-clockwise spiral lip design
• 1.378 in. inside diameter / 35.000 mm shaft size
• 3.000 in. outside diameter / 76.200 mm housing diameter
• 0.315 in. width / 8.000 mm width
• Overall width with side lip: 0.453 in. / 11.500 mm
• National 710629 part number for direct reference and ordering

Product Details

National 710629 is an oil seal in the 710600 series, engineered for automatic transmission output shaft sealing where precise metric dimensions matter. The counter-clockwise spiral lip design helps support sealing at the shaft interface, while the polyacrylate construction is suited to transmission fluid exposure. National has focused on sealing solutions for more than 75 years, and this seal reflects that experience in a compact OE-style service part.

This part cross-references BBB Industries 13981 for the same application. National 710629 is also referenced by OE and aftermarket numbers including 91205-P4V-003 and HO-42 for select Honda and Acura transmission service needs.

Vehicle Fitment

• Fits 2011-2016 Honda CR-Z, left
• Fits 2013-2015 Acura ILX, left
• Fits 2012-2014 Honda Insight, left
• Fits 2003-2011 Honda Civic, left
• Fits 2010-2011 Honda Insight, left, with Honda SBLA Transmission

Common Repair Uses

• Transmission fluid leaking from the output shaft area
• Visible seepage around the left-side transmission seal
• Seal wear from age, heat, or fluid contamination
• Service replacement during transmission repair or rebuild
• Restoring proper sealing on Honda and Acura left-side applications

Installation Notes

Verify shaft diameter, housing bore, and transmission configuration before installation. Clean the seal bore and shaft surface thoroughly, and inspect for grooves or damage that could affect sealing. Confirm left-side application and, for 2010-2011 Honda Insight models, verify the Honda SBLA transmission requirement before ordering.

Quality Assurance

National is a long-established sealing brand with more than 75 years of experience in sealing technology. Part number 710629 is built to meet the dimensional and material requirements listed above for transmission service work.