National 710415 Manual Transmission Output Shaft Seal - Front

Overview of National 710415 Manual Transmission Output Shaft Seal

The National 710415 manual transmission output shaft seal is engineered to provide reliable sealing performance for select Ford, Mercury, and Nissan vehicles. Designed with precision, this oil seal helps maintain transmission integrity by preventing fluid leaks and contamination.

• Inside diameter: 1.260 inches (32.000 mm)
• Outside diameter: 1.978 inches (50.230 mm)
• Thickness/width: 0.315 inches (8.000 mm)
• Sealing material: Durable nitrile compound
• Clockwise-spiral lip design for effective sealing
• Compatible housing bore: 1.969 inches (50.000 mm)

Technical Details and Material Specifications

This National 710415 output shaft seal is constructed from nitrile, a material known for its resistance to oil, heat, and wear. The seal features a clockwise-spiral lip design that enhances sealing efficiency by directing contaminants away from the shaft. With an inside diameter of 1.260 inches and an outside diameter of 1.978 inches, it fits shafts measuring 32 mm and housing bores around 50 mm, making it suitable for various manual transmissions.

Compatible Vehicles and Applications

This manual transmission output shaft seal is compatible with multiple Ford, Mercury, and Nissan models, including the Ford Bronco, F-150, F-250, E-150 Econoline, E-350 Econoline, Mercury Cougar, and Nissan Pulsar, Pulsar NX, Sentra, and Thunderbird. The part number 710415 ensures precise fitment for these vehicles, supporting proper transmission function and longevity.

Common Issues Addressed by the 710415 Output Shaft Seal

• Prevents transmission fluid leaks from the output shaft area
• Reduces contamination ingress that can damage transmission components
• Minimizes wear on the output shaft by maintaining lubrication
• Helps maintain consistent transmission performance and shifting
• Protects against premature seal failure due to heat and oil exposure

Installation Notes and Tips

When installing the National 710415 output shaft seal, ensure the shaft and housing bore are clean and free of debris. Use appropriate tools to press the seal evenly into the housing bore without damaging the sealing lip. Verify the seal orientation matches the clockwise-spiral lip design for optimal sealing. Lubricate the seal lip lightly with transmission fluid before installation to reduce initial wear.

Quality Assurance and Warranty

National manufactures the 710415 output shaft seal to meet industry standards for durability and performance. The nitrile material and design specifications provide reliable sealing under typical operating conditions. This product is backed by National's quality assurance processes, ensuring consistent fit and function. Warranty coverage details are available through the manufacturer and should be reviewed prior to installation.