National 710143 Manual Transmission Output Shaft Seal - Rear or Right

Manual Transmission Output Shaft Seal

National 710143 is a manual transmission output shaft seal built for specific Toyota applications with matching transmission and transfer case requirements. It uses nitrile sealing material and metric dimensions to support a precise seal at the shaft and housing interface.

For Toyota Celica, Corolla, and Camry applications, this seal is specified for select manual transmission and full-time 4WD drivetrains. The National 710143 part number appears across multiple fitments, including Toyota Celica with E150F and E50F2 transmissions, Toyota Corolla with E57F5 and S125 transfer case applications, and Toyota Camry with E55F5, E56F2, and E56F5 transmissions.

Key Features

• Nitrile sealing material for transmission fluid sealing applications
• Metric design with 47 mm shaft size and 84.2 mm outside diameter
• 0.433 in width and 11 mm overall width for dimensional match
• Flanged seal design with 91 mm flanged outside diameter
• Part of National Series 710100 sealing components

Detailed Description

National 710143 is an oil seal for manual transmission output shaft service. The seal is engineered around a 1.850 in shaft diameter, 3.315 in outside diameter, and 3.307 in housing bore, with nitrile material selected for sealing performance in drivetrain applications. Its metric construction and side-lip profile help maintain a controlled seal at the output shaft area.

This part cross-references Gates 18489 for the same application. If you are servicing a Toyota Celica, Corolla, or Camry with the listed transmission codes, verify the transmission and transfer case details before installation. The National 710143 part number is used across multiple Toyota manual transmission configurations, including right-side and rear output applications.

What It Is Used For

• Stopping transmission fluid seepage at the output shaft
• Replacing a worn or hardened shaft seal
• Addressing leaks around the transmission housing bore
• Restoring sealing performance in manual drivetrain service

Installation Notes and Tips

Confirm the transmission code, transfer case type, shaft diameter, and housing bore before ordering. This seal is listed for specific Toyota manual transmission and full-time 4WD applications, so matching the drivetrain configuration is essential. Clean the bore and shaft sealing surface thoroughly before installation and inspect for wear that could affect seal life.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop products for modern vehicle applications. The 710143 is part of that sealing lineup and is built to meet the dimensional requirements of the listed fitments.