National 712007 Manual Transmission Input Shaft Seal

Overview of National 712007 Manual Transmission Input Shaft Seal

The National 712007 manual transmission input shaft seal is engineered to provide reliable sealing performance for a variety of vehicles including Chrysler, Dodge, Ford, Hyundai, Kia, Mitsubishi, and Plymouth models. Designed with durable silicone material and a clockwise-spiral lip design, this oil seal helps maintain transmission integrity by preventing fluid leaks.

• Inside diameter: 0.984 inch (25.000 mm)
• Outside diameter: 1.388 inch (35.250 mm)
• Thickness: 0.276 inch (6.000 mm)
• Sealing material: Silicone for enhanced durability and flexibility
• Helix type: Clockwise-spiral lip design for effective sealing
• Compatible with multiple vehicle makes and models

Technical Details and Material Specifications

The National 712007 input shaft seal is constructed from high-quality silicone, which offers excellent resistance to heat, oil, and wear. The seal features a 0.984 inch (25 mm) inside diameter and a 1.388 inch (35.25 mm) outside diameter, with a thickness of 0.276 inch (6 mm). Its clockwise-spiral lip design ensures a tight seal around the manual transmission input shaft, reducing the risk of oil leaks and contamination. The housing bore measures approximately 1.378 inches (35 mm), making it suitable for precise fitment in compatible transmissions.

Compatible Vehicles and Applications

This manual transmission input shaft seal is compatible with a range of vehicles, including but not limited to Chrysler 3000GT, Dodge Challenger, Ford Ranger, Hyundai Elantra, Kia Forte, Mitsubishi Eclipse, and Plymouth Voyager models. It is designed specifically for manual transmissions requiring a 25 mm shaft seal, ensuring proper fit and function.

Common Issues Addressed by the National 712007 Seal

• Prevents oil leaks from the manual transmission input shaft
• Reduces contamination and debris ingress into the transmission
• Maintains proper lubrication within the transmission system
• Helps avoid premature wear of transmission components
• Ensures consistent transmission performance and longevity

Installation Notes and Tips

When installing the National 712007 input shaft seal, ensure the transmission input 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. It is recommended to inspect the shaft for wear or damage before installation and replace if necessary to prevent future leaks.

Quality Assurance and Warranty Information

National manufactures the 712007 input shaft seal to meet industry standards for durability and performance. The use of silicone material and precise engineering supports long service life under normal operating conditions. While specific warranty details may vary, National typically offers coverage against manufacturing defects to ensure customer confidence in the product.