National 710992 Differential Pinion Seal - Rear

National 710992 Differential Pinion Seal Overview

The National 710992 differential pinion seal is engineered to provide reliable sealing performance for Chrysler, Dodge, and Jeep vehicles. Designed with a clockwise-spiral lip, this oil seal ensures effective retention of differential fluid, helping maintain optimal driveline function.

• Polyacrylate material for durable sealing
• Clockwise-spiral lip design for enhanced sealing efficiency
• Housing bore diameter: 3.150 inches (80.000 mm)
• Outside diameter: 3.159 inches (80.250 mm)
• Overall width with side lip: 0.512 inches (13.000 mm)
• Shaft diameter compatibility: 1.969 inches (50.000 mm)
• Width: 0.315 inches (8.000 mm)
• Part of the 710900 series

Technical Details and Specifications

This National differential pinion seal (part number 710992) is constructed from polyacrylate, a material known for its resistance to heat and wear, making it suitable for demanding automotive applications. The clockwise-spiral lip design helps maintain a tight seal around the pinion shaft, reducing the risk of fluid leaks. With a housing bore of 3.150 inches and an outside diameter of 3.159 inches, this seal fits precisely within the differential housing. The overall width, including the side lip, measures 0.512 inches, providing a secure fit and effective sealing surface. It is designed to accommodate a shaft diameter of 1.969 inches, matching the specifications of many Chrysler, Dodge, and Jeep models.

Compatible Vehicles and Applications

This differential pinion seal is compatible with a range of Chrysler, Dodge, and Jeep vehicles, including the Chrysler 300, Dodge Challenger, Dodge Charger, Dodge Durango, and Jeep Grand Cherokee. It is specifically designed to meet the sealing requirements of these models’ driveline and axle assemblies, ensuring proper differential function and fluid retention.

Common Issues Addressed by the National 710992 Seal

• Prevents differential fluid leaks that can cause driveline damage
• Reduces contamination ingress into the differential housing
• Maintains proper lubrication of the pinion shaft
• Helps avoid premature wear of differential components
• Supports consistent differential performance under various driving conditions

Installation Notes and Tips

When installing the National 710992 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 sealing lip. Verify the seal orientation matches the clockwise-spiral lip design for optimal performance. It is recommended to inspect the pinion shaft for wear or damage before installation and replace if necessary to prevent future leaks.

Quality Assurance and Warranty

National manufactures the 710992 differential pinion seal to meet industry standards for durability and performance. The polyacrylate construction and precise dimensions ensure a reliable seal in demanding automotive environments. This part is backed by National’s quality assurance processes, providing confidence in its fit and function for compatible Chrysler, Dodge, and Jeep models.