National 710480 Differential Pinion Seal - Rear Outer

National 710480 Differential Pinion Seal Overview

The National 710480 differential pinion seal is engineered to provide reliable sealing performance for driveline components. Designed for select Chrysler, Dodge, Jeep, Mitsubishi, and Ram models, this oil seal helps maintain optimal differential function by preventing fluid leaks.

• Inside diameter options: 1.732 inch (44.00 mm)
• Outside diameter: 2.621 inch (66.57 mm)
• Flanged outside diameter: 3.016 inch (76.60 mm)
• Thickness: 0.445 inch (11.30 mm)
• Bi-directional lip design for enhanced sealing
• Constructed from durable fluoro-elastomer material
• Fits housing bore diameter of 2.614 inch (66.40 mm)
• Overall width with side lip: 0.750 inch (19.05 mm)

Technical Details and Specifications

The National 710480 differential pinion seal features a bi-directional lip design that ensures effective sealing against oil leaks in both rotational directions. Its fluoro-elastomer construction offers resistance to heat, oil, and wear, making it suitable for demanding driveline environments. The seal’s precise dimensions, including a 1.732 inch (44 mm) shaft diameter and a 2.621 inch (66.57 mm) outside diameter, ensure a proper fit within the differential housing bore of 2.614 inch (66.40 mm). The flanged outside diameter of 3.016 inch (76.60 mm) provides secure mounting and stability during operation.

Compatible Vehicles and Applications

This differential pinion seal is compatible with a range of vehicles including Chrysler Aspen, Dodge Dakota, Durango, Ram 1500 Van, Ram 2500 Van, Jeep Cherokee, Commander, Grand Cherokee, Liberty, Nitro, and Mitsubishi Raider models. The part number 710480 is specifically designed to meet the sealing requirements of these driveline systems, ensuring proper fit and function.

Common Issues Addressed by the National 710480 Seal

• Prevents differential oil leaks that can cause driveline damage
• Reduces contamination ingress into the differential assembly
• Maintains proper lubrication levels for differential gears
• Minimizes wear on pinion shaft and bearings
• Helps avoid costly repairs due to seal failure

Installation Notes and Tips

When installing the National 710480 differential pinion seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into the bore without distortion. Verify the seal’s orientation matches the bi-directional lip design for optimal sealing. Lubricate the seal lip lightly with differential oil before installation to reduce initial wear. Follow vehicle-specific service manual instructions for torque specifications and installation procedures.

Quality Assurance and Warranty

National manufactures the 710480 differential pinion seal to meet industry standards for durability and performance. The fluoro-elastomer material and precise engineering contribute to long service life under normal operating conditions. While specific warranty details may vary, National typically offers coverage against manufacturing defects to ensure customer confidence in the product’s reliability.