National 224250 Manual Transmission Input Shaft Seal

Overview of National 224250 Manual Transmission Input Shaft Seal

The National 224250 manual transmission input shaft seal is engineered to provide reliable sealing performance for a variety of vehicle makes including Acura, BMW, Chrysler, Dodge, Honda, and Mercedes-Benz. Designed with nitrile material, this oil seal ensures effective protection against fluid leaks and contamination in manual transmission systems.

• Inside diameter: 1.654 inches (42.000 mm)
• Outside diameter: 2.452 inches (62.270 mm)
• Thickness/width: 0.315 inches (8.000 mm)
• Sealing material: durable nitrile for resistance to oil and heat
• Compatible with multiple vehicle models from Acura, BMW, Jeep, Land Rover, Mercedes-Benz, Volkswagen, and more

Technical Details and Specifications

This National manual transmission input shaft seal (part number 224250) features a precise inside diameter of 1.654 inches (42 mm) and an outside diameter of 2.452 inches (62.27 mm), making it suitable for shafts and housing bores with matching dimensions. The 0.315 inch (8 mm) thickness provides a secure fit and effective sealing surface. Constructed from nitrile, the seal offers excellent resistance to oil, heat, and wear, which is critical for maintaining transmission integrity under demanding operating conditions.

Compatible Vehicles and Applications

This input shaft seal is compatible with a wide range of vehicles, including but not limited to:

• BMW models such as 320i, 528i, 530i, 535i, and various AMG variants
• Mercedes-Benz models including C230, C300, E55 AMG, ML350, and SLK350
• Jeep Grand Cherokee and Wrangler series
• Land Rover Defender 90 and Discovery
• Acura, Chrysler, Dodge, Honda, Isuzu, Jaguar, Maybach, Volkswagen, and others

Its versatility makes it a suitable replacement part for manual transmission input shaft sealing needs across these brands.

Common Issues Addressed by the National 224250 Seal

• Prevents oil leaks from the manual transmission input shaft
• Protects transmission internals from dirt and debris contamination
• Reduces wear on transmission components by maintaining proper lubrication
• Helps maintain transmission performance and longevity
• Eliminates noise and vibration caused by fluid loss or seal failure

Installation Notes and Tips

When installing the National 224250 input shaft seal, ensure the shaft and housing bore are clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the sealing lip or nitrile material. Verify the seal dimensions match the shaft and bore measurements to avoid leaks. Proper installation will help maintain the seal’s effectiveness and extend transmission service life.

Quality Assurance and Warranty

National manufactures this input shaft seal to meet industry standards for durability and performance. The nitrile material is selected for its resistance to oil and heat, ensuring reliable sealing under typical transmission operating conditions. While specific warranty details are not provided, National products are generally backed by quality control processes to ensure fit and function for compatible vehicles.