National 710211 Differential Pinion Seal - Rear Outer

Overview of National 710211 Differential Pinion Seal

The National 710211 differential pinion seal is engineered for reliable sealing performance in driveline applications. Designed specifically for select INFINITI and Nissan models, this oil seal helps maintain proper lubrication and prevent leaks in the differential assembly.

• Inside diameter: 1.875 inches (47.630 mm)
• Outside diameter: 2.681 inches (68.100 mm)
• Flanged outside diameter: 3.110 inches (78.990 mm)
• Thickness/width: 0.375 inches (9.530 mm)
• Material: durable polyacrylate
• Helix type: clockwise-spiral lip design for enhanced sealing
• Compatible housing bore: 2.677 inches (68.000 mm)

Technical Details and Specifications

The National 710211 differential pinion seal features a polyacrylate construction that offers resistance to heat and wear, suitable for the demanding environment of automotive differentials. Its 74-type seal design incorporates a clockwise-spiral lip, which helps to direct lubricant inward and contaminants outward, reducing the risk of leaks and premature seal failure. The precise dimensions, including a 1.875-inch shaft diameter and a 2.681-inch outside diameter, ensure a proper fit within the differential housing bore of 2.677 inches, making it compatible with specific INFINITI and Nissan vehicles.

Compatible Vehicles and Applications

This differential pinion seal is compatible with the following models:

• INFINITI Q45
• Nissan 240SX
• Nissan 300ZX
• Nissan J30
• Nissan M30

Use the National 710211 seal when servicing the differential pinion shaft on these vehicles to maintain optimal driveline performance and prevent oil leaks.

Common Issues Addressed by the National 710211 Seal

• Prevents differential oil leaks caused by worn or damaged seals
• Reduces contamination ingress into the differential assembly
• Maintains proper lubrication of the pinion shaft
• Helps avoid costly differential repairs due to seal failure
• Improves driveline reliability and longevity

Installation Notes and Tips

• Ensure the differential housing bore and shaft are clean and free of debris before installation
• Use appropriate tools to press the seal evenly into the housing bore without distortion
• Verify the seal lip orientation matches the clockwise-spiral design for correct sealing direction
• Apply a light coating of differential oil on the seal lip prior to installation to reduce initial wear
• Inspect the pinion shaft for wear or damage and replace if necessary before installing the new seal

Quality Assurance and Warranty

National manufactures the 710211 differential pinion seal to meet industry standards for durability and performance. Constructed from high-quality polyacrylate material, this seal is designed to withstand the operational stresses of automotive differentials. While specific warranty details may vary, National products typically come with a limited warranty against manufacturing defects. Consult product documentation or authorized sources for exact warranty terms.