National 710976 Automatic Transmission Output Shaft Seal - Left

Overview of National 710976 Automatic Transmission Output Shaft Seal

The National 710976 automatic transmission output shaft seal is engineered to provide reliable sealing performance for various vehicle models including Chrysler, Dodge, Hyundai, Kia, and Mitsubishi. Designed with precision dimensions and durable polyacrylate material, this oil seal helps maintain transmission integrity and prevent fluid leaks.

• Inside diameter: 1.378 inches (35.000 mm)
• Outside diameter: 2.209 inches (56.100 mm)
• Flanged outside diameter: 2.441 inches (62.000 mm)
• Thickness: 0.354 inches (9.000 mm)
• Overall width with side lip: 0.496 inches (12.600 mm)
• Counter-clockwise spiral lip design for effective sealing
• Material: Polyacrylate for enhanced durability and resistance
• Compatible with multiple vehicle makes and models

Technical Details and Specifications

The National 710976 transmission output shaft seal features a counter-clockwise spiral lip design that ensures a tight seal around the shaft, reducing the risk of transmission fluid leaks. The seal’s polyacrylate construction offers resistance to heat, wear, and chemical exposure commonly found in automatic transmission environments. With an inside diameter of 1.378 inches (35 mm) and an outside diameter of 2.209 inches (56.1 mm), this seal fits precisely within the housing bore of 2.205 inches (56 mm). The flanged outside diameter of 2.441 inches (62 mm) provides additional stability during installation and operation. The overall width with side lip measures 0.496 inches (12.6 mm), ensuring proper sealing coverage.

Compatible Vehicles and Applications

This output shaft seal is compatible with a range of vehicles, including Chrysler Sebring and Stratus, Dodge Eclipse and Caravan, Hyundai Elantra, Sonata, and Accent, Kia Optima, Magentis, and Rondo, as well as Mitsubishi Lancer, Galant, and Mirage models. The part number 710976 is specifically designed to meet the sealing requirements of these vehicles’ automatic transmissions, helping maintain optimal performance and fluid retention.

Common Issues Addressed by the National 710976 Seal

• Prevents automatic transmission fluid leaks around the output shaft
• Reduces contamination ingress into the transmission system
• Minimizes wear on transmission components by maintaining proper lubrication
• Helps avoid transmission overheating caused by fluid loss
• Maintains pressure integrity within the transmission housing

Installation Notes and Tips

When installing the National 710976 output shaft seal, ensure the transmission housing bore is clean and free of debris. Use appropriate tools to avoid damaging the seal’s lip or flange during installation. Verify the seal orientation matches the counter-clockwise spiral lip design for optimal sealing performance. Lubricate the seal lip lightly with transmission fluid before installation to reduce initial wear. Confirm the seal is seated evenly and flush within the housing bore to prevent leaks.

Quality Assurance and Warranty

National transmission seals are manufactured to meet industry standards for durability and performance. The 710976 seal is made from high-quality polyacrylate material, providing resistance to heat and chemical exposure typical in automatic transmissions. While specific warranty details may vary, National products generally come with a limited warranty against manufacturing defects, ensuring reliability and peace of mind for professional installers and vehicle owners.