National 224570 Differential Pinion Seal - Front Outer or Rear Outer

National Differential Pinion Seal 224570 Overview

The National 224570 differential pinion seal is engineered to provide reliable sealing performance for various Chrysler, Dodge, Mitsubishi, and Plymouth vehicles. Designed with precision, this oil seal helps maintain proper lubrication and prevents leaks in the driveline system.

• Inside diameter: 1.772 inches (45.000 mm)
• Outside diameter: 2.846 inches (72.280 mm)
• Thickness: 0.472 inches (12.000 mm)
• Overall width with side lip: 0.748 inches (19.000 mm)
• Material: Durable nitrile rubber for effective sealing
• Compatible with shaft size: 1.772 inches (45.000 mm)
• Series: 220000, Type: 35

Technical Details and Specifications

This National differential pinion seal (part number 224570) is constructed from nitrile, a material known for its resistance to oil, heat, and wear. The seal features an inside diameter of 1.772 inches (45 mm) and an outside diameter of 2.846 inches (72.28 mm), making it suitable for housings with a bore diameter of approximately 2.835 inches (72 mm). The thickness of 0.472 inches (12 mm) and an overall width including the side lip of 0.748 inches (19 mm) ensure a secure fit and effective sealing around the pinion shaft.

Compatible Vehicles and Applications

This differential pinion seal is compatible with a range of vehicles including Chrysler, Dodge, Mitsubishi, and Plymouth models such as the Conquest, D50, Mighty Max, Montero, Montero Sport, Power Ram 50, Raider, Ram 50, Starion, and Van. It is designed specifically for driveline and axle sealing systems, ensuring proper function of the differential by preventing oil leaks and contamination.

Common Issues Addressed by the National 224570 Seal

• Prevents oil leaks from the differential pinion shaft
• Protects driveline components from dirt and debris ingress
• Maintains proper lubrication within the differential housing
• Reduces wear on the pinion shaft and bearings
• Helps avoid costly differential repairs due to seal failure

Installation Notes and Tips

When installing the National 224570 differential pinion seal, ensure the housing bore is clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the nitrile material. Verify the shaft size matches the seal’s inside diameter of 1.772 inches (45 mm) for a proper fit. Avoid over-tightening or misalignment to maintain seal integrity and prevent premature failure.

Quality Assurance and Warranty

National manufactures this differential pinion seal to meet industry standards for durability and performance. The nitrile construction offers resistance to oil and heat, contributing to long service life. While specific warranty details are not provided, National products typically adhere to quality control processes to ensure reliability in automotive driveline applications.