National 711018 Automatic Transmission Output Shaft Seal - Right

Overview of National 711018 Automatic Transmission Output Shaft Seal

The National 711018 automatic transmission output shaft seal is engineered to provide reliable sealing performance for various Dodge, Hyundai, Jeep, and Kia models. Designed with precision, this oil seal helps maintain transmission fluid integrity and prevents leaks in critical drivetrain components.

• Inside diameter options: 1.457 inch (37.000 mm)
• Outside diameter: 2.646 inch (67.200 mm)
• Thickness: 0.394 inch (10.000 mm)
• Overall width with side lip: 0.669 inch (17.000 mm)
• Material: Ethylene-acrylic for durability and resistance
• Helix type: Clockwise-spiral lip design for effective sealing
• Housing bore compatibility: 2.638 inch (67.000 mm)

Technical Details and Design Features

The National 711018 output shaft seal features a clockwise-spiral lip design that enhances sealing efficiency by directing fluid back into the transmission housing. Constructed from ethylene-acrylic material, this seal offers resistance to heat, oxidation, and transmission fluids, ensuring long service life. The precise dimensions, including a 1.457 inch inside diameter and 2.646 inch outside diameter, make it suitable for specific transmission housings with a 2.638 inch bore. The overall width of 0.669 inch with side lip provides a secure fit and prevents fluid leakage under various operating conditions.

Compatible Vehicles and Applications

This automatic transmission output shaft seal is compatible with a range of vehicles, including Dodge Dart and Jeep Patriot, as well as Hyundai Elantra, Elantra Coupe, Elantra GT, Kona, Santa Fe, Santa Fe Sport, Santa Fe XL, Sonata, Tucson, Veloster, and Kia Forte, Forte5, Forte Koup, Optima, Rondo, Sorento, Soul, and Sportage models. The part number 711018 ensures correct fitment for these applications, maintaining transmission performance and reliability.

Common Issues Addressed by the National 711018 Seal

• Prevents automatic transmission fluid leaks from the output shaft area
• Reduces risk of contamination entering the transmission system
• Minimizes wear on transmission components caused by fluid loss
• Helps maintain proper hydraulic pressure within the transmission
• Prevents overheating and damage due to fluid leakage

Installation Notes and Tips

When installing the National 711018 output shaft seal, ensure the transmission housing bore is clean and free of debris. Use appropriate tools to avoid damaging the seal lip or housing during installation. 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. Confirm fitment with the vehicle’s service manual to ensure compatibility with the specific make and model.

Quality Assurance and Warranty

National transmission seals are manufactured to meet industry standards for durability and performance. The ethylene-acrylic material and precision design contribute to consistent sealing under demanding conditions. While specific warranty details for part number 711018 may vary, National typically offers coverage against manufacturing defects. Consult product documentation or authorized sources for warranty terms applicable to this transmission output shaft seal.