National 7216 Differential Pinion Seal - Rear Outer

National 7216 Differential Pinion Seal Overview

The National 7216 differential pinion seal is designed to provide reliable sealing performance for Chrysler and Dodge vehicles. Engineered with precision, this oil seal helps maintain proper lubrication and prevents leaks in the driveline system.

• Inside diameter: 1.875 inches (47.630 mm)
• Outside diameter: 3.110 inches (78.990 mm)
• Flanged outside diameter: 3.266 inches (82.956 mm)
• Thickness/width: 0.500 inches (12.700 mm)
• Material: Durable leather construction
• Compatible with multiple Chrysler and Dodge models

Technical Specifications and Design Details

This National differential pinion seal (part number 7216) features a 1.875-inch inside diameter and a 3.110-inch outside diameter, making it suitable for shafts and housings with matching dimensions. The seal’s thickness of 0.500 inches ensures a secure fit within the housing bore, which measures approximately 3.105 inches. Constructed from leather, the seal offers effective oil retention and resistance to wear under typical driveline operating conditions. The flanged outside diameter of 3.266 inches provides additional stability during installation and operation.

Compatible Chrysler and Dodge Models

This differential pinion seal is compatible with a range of Chrysler and Dodge vehicles, including the Chrysler 300, Dart, Imperial, Lancer, Monaco, Newport, New Yorker, and Town & Country models. When replacing the pinion seal on these vehicles, part number 7216 ensures proper fitment and reliable sealing performance.

Common Applications and Problem Resolution

• Prevents oil leaks from the differential pinion shaft
• Maintains lubrication integrity within the driveline system
• Reduces risk of contamination entering the differential housing
• Helps avoid premature wear of differential components
• Addresses noise and vibration issues caused by seal failure

Installation Notes and Tips

For optimal installation, ensure the housing bore and shaft are clean and free of debris before fitting the seal. Use appropriate tools to press the seal evenly into the housing bore without damaging the leather material. Verify the seal’s orientation matches the original part to maintain proper oil retention. It is recommended to inspect related driveline components during installation to identify any additional maintenance needs.

Quality Assurance and Warranty

National manufactures the 7216 differential pinion seal to meet industry standards for durability and performance. The leather material and precise dimensions contribute to consistent sealing under normal operating conditions. While specific warranty details may vary, National products typically come with a limited warranty against manufacturing defects, providing confidence in the part’s reliability.