National 710415 Manual Transmission Output Shaft Seal - Front

Manual Transmission Output Shaft Seal for Ford and Nissan

National 710415 is a metric manual transmission output shaft seal built with nitrile sealing material and a clockwise-spiral lip design. It is sized for a 32 mm shaft and a 50 mm housing bore, making it a direct-fit sealing solution for select Ford, Mercury, and Nissan manual transmission applications.

Key Features

• Manual transmission output shaft seal for transmission sealing service
• Nitrile sealing material for dependable oil control
• Clockwise-spiral lip design helps manage shaft rotation
• Metric dimensions: 32.000 mm shaft, 50.000 mm housing bore
• Outside diameter measures 50.230 mm with 8.000 mm width
• National part number 710415 for easy identification

Product Details

National 710415 is an oil seal in the 710400 series, engineered for manual transmission output shaft applications where precise sealing dimensions matter. The nitrile construction is suited to transmission sealing needs, while the spiral lip profile supports consistent contact at the shaft interface. This part number 710415 is used across select Ford F-150, Ford Bronco, Ford F-250, Ford Thunderbird, Mercury Cougar, and Nissan Pulsar/Sentra applications, including Ford trucks equipped with Mazda M5R2 and M5R2C transmissions.

This part cross-references Remy 12752 for the same application.

Vehicle Fitment

• Fits 2004-2007 Ford F-150, with Mazda M5R2C Transmission
• Fits 2004 Ford F-150 Heritage, with Mazda M5R2C Transmission
• Fits 1988-2003 Ford F-150, with Mazda M5R2 Transmission
• Fits 1988-1999 Ford F-250, with Mazda M5R2 Transmission
• Fits 1997 Ford F-250 HD, with Mazda M5R2 Transmission
• Fits 1988-1996 Ford Bronco, with Mazda M5R2 Transmission
• Fits 1989-1995 Ford Thunderbird, with Mazda M5R2 Transmission
• Fits 1989-1990 Mercury Cougar, with Mazda M5R2 Transmission
• Fits 1983-1990 Nissan Pulsar NX
• Fits 1983-1990 Nissan Sentra
• Fits 1988-1989 Ford E-150 Econoline, with Mazda M5R2 Transmission
• Fits 1988-1989 Ford E-150 Econoline Club Wagon, with Mazda M5R2 Transmission
• Fits 1988-1989 Ford E-350 Econoline, with Mazda M5R2 Transmission
• Fits 1983 Nissan Pulsar

Common Issues This Seal Helps Address

• Transmission fluid seepage at the output shaft
• Oil residue around the rear of the manual transmission
• Seal wear from shaft rotation and age
• Leak-related contamination of nearby drivetrain components
• Service replacement for a worn or hardened output shaft seal

Installation Notes and Tips

Verify shaft diameter, housing bore, and transmission type before installation. Clean the seal bore and shaft surface thoroughly, and inspect the output shaft for grooves or damage that could affect sealing performance. Confirm the application uses a Mazda M5R2 or M5R2C transmission where noted, especially on Ford F-150, Ford Bronco, Ford F-250, and related models.

Quality Assurance

National has supplied sealing products for more than 75 years and continues to develop sealing solutions for modern vehicle service needs. National 710415 is built to meet the dimensional and material requirements of the listed manual transmission applications.