National 710702 Automatic Transmission Output Shaft Seal - Left

Overview of National 710702 Automatic Transmission Output Shaft Seal

The National 710702 automatic transmission output shaft seal is engineered to provide reliable sealing performance for select Toyota, Pontiac, and Scion models. 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: 2.252 inches (57.200 mm)
• Thickness: 0.354 inches (9.000 mm)
• Overall width with side lip: 0.591 inches (15.000 mm)
• Counter-clockwise spiral lip design for effective sealing
• Material: Polyacrylate for enhanced durability and resistance
• Housing bore compatibility: 2.244 inches (57.000 mm)

Detailed Product Description

The National 710702 output shaft seal is part of the 710700 series, designed specifically for automatic transmissions requiring precise sealing solutions. Its counter-clockwise spiral lip design ensures optimal oil retention and prevents contamination ingress. Constructed from polyacrylate, the seal offers resistance to heat, wear, and transmission fluids, making it suitable for extended service life. The seal’s dimensions, including a 1.378-inch inside diameter and 2.252-inch outside diameter, align with the housing bore size of 2.244 inches, ensuring a secure fit and reliable performance.

Compatible Vehicles and Applications

This transmission output shaft seal is compatible with various Toyota, Pontiac, and Scion models, including Toyota Celica, Corolla, Matrix, Prius, Vibe, Yaris, and Scion xA, xB, and xD. The part number 710702 is specifically designed to meet the sealing requirements of these vehicles’ automatic transmissions, helping maintain proper fluid containment and transmission function.

Common Issues Addressed by the National 710702 Seal

• Prevents automatic transmission fluid leaks from the output shaft area
• Reduces contamination entry that can cause premature transmission wear
• Maintains proper fluid pressure within the transmission system
• Helps avoid costly transmission repairs due to seal failure
• Ensures smooth operation of the transmission output shaft

Installation Notes and Tips

• Verify the correct part number 710702 before installation to ensure compatibility
• Clean the housing bore and shaft thoroughly to remove debris and old sealant
• Use appropriate tools to press the seal evenly into the housing bore without distortion
• Inspect the shaft for wear or damage before installing the new seal
• Apply a light coating of transmission fluid to the seal lip to facilitate installation and initial operation

Quality Assurance and Warranty

National transmission seals are manufactured to meet industry standards for durability and performance. The 710702 seal undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty terms may vary, National typically offers coverage against manufacturing defects to provide confidence in the product’s reliability.