National 711070 Axle Differential Seal - Front or Rear

Overview of National 711070 Axle Differential Seal

The National 711070 axle differential seal is engineered to provide reliable sealing performance for various Nissan and INFINITI models. Constructed from durable polyacrylate material, this oil seal is designed to maintain optimal differential function by preventing oil leaks and contamination.

• Material: Polyacrylate for enhanced durability and resistance
• Housing Bore Diameter: 2.165 inches (55.000 mm)
• Outside Diameter: 2.173 inches (55.200 mm)
• Overall Width with Side Lip: 0.709 inches (18.000 mm)
• Shaft Diameter: 1.378 inches (35.000 mm)
• Seal Width: 0.433 inches (11.000 mm)
• Series: 711000
• Type: 40

Technical Description and Specifications

This axle differential seal from National, part number 711070, is designed to fit a range of Nissan and INFINITI vehicles including models such as the 200SX, 240SX, 280ZX, 300ZX, 350Z, 370Z, Pathfinder, Frontier, and FX series among others. The seal’s polyacrylate construction offers resistance to heat and wear, ensuring a tight seal around the axle shaft and housing bore. With precise dimensions—2.165 inch housing bore and 1.378 inch shaft diameter—this seal maintains proper fitment and function within the differential assembly.

Compatible Vehicles and Applications

This axle differential seal is compatible with multiple Nissan and INFINITI models, including but not limited to:

• Nissan 200SX, 240SX, 280ZX, 300ZX, 350Z, 370Z
• Nissan Pathfinder, Pathfinder Armada, Frontier, Xterra, D21, Pickup
• INFINITI EX35, EX37, FX35, FX37, FX45, FX50, G25, G35, G37, J30, M30, M35, M37, M45, M56, Q40, Q45, Q60, Q70, Q70L, QX4, QX50, QX70

Common Issues Addressed by the National 711070 Seal

• Prevents oil leaks from the axle differential housing
• Protects differential components from dirt and debris contamination
• Maintains proper lubrication within the differential assembly
• Reduces wear on axle shafts by maintaining a secure seal
• Helps avoid costly differential repairs due to seal failure

Installation Notes and Tips

• Ensure the housing bore and shaft are clean and free of debris before installation
• Use appropriate tools to avoid damaging the seal during installation
• Verify the seal orientation matches manufacturer specifications
• Check for proper fitment by confirming dimensions: 2.165 inch housing bore and 1.378 inch shaft diameter
• Lubricate the seal lip lightly with differential oil prior to installation for smoother fit

Quality Assurance and Warranty

National axle differential seals are manufactured to meet industry standards for durability and performance. The 711070 seal undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in product reliability.