National 471648 Manual Transmission Input Shaft Seal

Overview of National 471648 Manual Transmission Input Shaft Seal

The National 471648 manual transmission input shaft seal is engineered to provide reliable sealing performance for select Dodge, Jeep, and Mitsubishi vehicles. Designed with durable nitrile material, this oil seal helps maintain transmission integrity by preventing fluid leaks and contamination.

• Constructed from high-quality nitrile for resistance to oil and wear
• Inside diameter of 0.968 inches (24.590 mm) to fit the input shaft precisely
• Outside diameter measures 1.628 inches (41.350 mm) for secure housing bore fitment
• Seal thickness of 0.250 inches (6.350 mm) ensures proper sealing depth
• Includes Redicoat coating for enhanced durability and corrosion resistance
• Part number 471648 corresponds to National's 470000 series oil seals

Detailed Product Description and Specifications

This manual transmission input shaft seal from National is designed to meet OEM specifications for a precise fit and reliable sealing. The nitrile material offers excellent resistance to transmission fluids and temperature variations, making it suitable for demanding automotive environments. With an inside diameter of 0.968 inches (24.590 mm) and an outside diameter of 1.628 inches (41.350 mm), the seal fits tightly within a housing bore of 1.624 inches (41.250 mm). The 0.250 inch (6.350 mm) thickness provides the necessary sealing surface to prevent leaks around the input shaft. The Redicoat finish adds a protective layer to reduce corrosion and extend service life. This seal is a zero duplication part, ensuring it is a unique and precise replacement component.

Compatible Vehicles and Common Applications

This National 471648 input shaft seal is compatible with manual transmissions on the following vehicles:

• Dodge Caliber
• Jeep Compass
• Mitsubishi Lancer
• Jeep Patriot

It is designed specifically for these models to maintain transmission fluid containment and prevent contamination, which can lead to transmission wear or failure.

Common Issues Addressed by This Input Shaft Seal

• Prevents transmission fluid leaks from the input shaft area
• Reduces risk of dirt and debris entering the transmission
• Helps maintain proper lubrication within the manual transmission
• Minimizes premature wear of transmission components due to fluid loss
• Eliminates noise and vibration caused by fluid leakage

Installation Notes and Tips

When installing the National 471648 input shaft seal, ensure the transmission housing bore is clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the sealing lip or the Redicoat surface. Verify the shaft diameter matches the 0.968 inch (24.590 mm) specification for proper fit. Avoid using excessive force during installation to maintain seal integrity and prevent leaks.

Quality Assurance and Warranty Information

National manufactures this input shaft seal to meet industry standards for durability and performance. The 471648 part number is part of the 470000 series, known for consistent quality. While specific warranty details are not provided, National products typically adhere to strict quality control processes to ensure reliability in automotive applications.