National 710996 Differential Pinion Seal - Rear Outer

National 710996 Differential Pinion Seal Overview

The National 710996 differential pinion seal is engineered to provide reliable sealing performance for a range of vehicles including Chrysler, Dodge, Jeep, and Mercedes-Benz models. Designed with precision dimensions and durable ethylene-acrylic material, this oil seal helps maintain differential integrity by preventing fluid leaks and contamination.

• Inside diameter: 1.929 inches (49.000 mm)
• Outside diameter: 3.157 inches (80.200 mm)
• Flanged outside diameter: 3.386 inches (86.000 mm)
• Thickness/width: 0.433 inches (11.000 mm)
• Counter-clockwise spiral lip design for enhanced sealing
• Material: Ethylene-acrylic for durability and resistance
• Compatible housing bore: 3.150 inches (80.000 mm)

Technical Details and Specifications

The National 710996 differential pinion seal features a 74-type design with a counter-clockwise spiral lip that ensures effective sealing against oil leaks in the differential assembly. Its ethylene-acrylic construction offers resistance to heat, wear, and chemical exposure commonly encountered in driveline environments. The seal’s precise dimensions, including a 1.929-inch shaft diameter and 3.157-inch outside diameter, make it suitable for specific OEM applications. The flanged outside diameter of 3.386 inches provides secure installation within the housing bore of 3.150 inches, ensuring a tight fit and long-lasting performance.

Compatible Vehicles and Applications

This differential pinion seal is compatible with a variety of Chrysler, Dodge, Jeep, and Mercedes-Benz vehicles. Notable models include the Jeep Grand Cherokee, Dodge Charger, Chrysler 300, and Mercedes-Benz AMG series such as the C63 AMG, E63 AMG, and GLS63 AMG. The part number 710996 is designed to meet the specifications required for these vehicles’ driveline and axle sealing systems, making it a reliable replacement part for maintenance and repair.

Common Issues Addressed by the National 710996 Seal

• Prevents differential oil leaks that can cause driveline damage
• Protects against contamination from dirt and debris entering the differential
• Maintains proper lubrication within the differential assembly
• Reduces risk of premature wear on pinion bearings and gears
• Helps avoid costly repairs related to seal failure

Installation Notes and Tips

When installing the National 710996 differential pinion seal, ensure the housing bore and shaft are clean and free of debris. Use appropriate tools to press the seal evenly into the housing bore without damaging the flanged edge or sealing lip. Verify the seal orientation matches the counter-clockwise spiral lip design for optimal sealing. It is recommended to inspect the pinion shaft and bearings for wear before installation to ensure proper fit and function.

Quality Assurance and Warranty

National manufactures the 710996 differential pinion seal to meet strict quality standards for durability and performance. Constructed from ethylene-acrylic material, this seal is designed to withstand harsh operating conditions. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in the product’s reliability for Chrysler, Dodge, Jeep, and Mercedes-Benz applications.