National 711070 Axle Differential Seal - Front or Rear

Axle Differential Seal for Nissan and Infiniti

National 711070 is an axle differential seal built for rear and front differential applications on a wide range of Nissan and Infiniti vehicles. It uses a polyacrylate sealing material and metric dimensions to support a precise fit in R200, R200V, and R200A differential housings.

For drivers servicing a Nissan 350Z, Infiniti G35, or Nissan Pathfinder, this seal is a direct replacement option for common differential leak repairs. The National 711070 part number is also a useful reference when matching OE-style oil seal dimensions and application coverage.

Key Features

• Polyacrylate sealing material for differential oil retention
• Metric design with 55.0 mm housing bore and 35.0 mm shaft size
• Outside diameter: 55.2 mm; overall width with side lip: 18.0 mm
• Width: 11.0 mm; type 40 oil seal construction
• Fits rear and front differential applications across Nissan and Infiniti platforms
• National 711070 cross-references Beck/Arnley 052-3506 for the same application

Detailed Description

National 711070 is an oil seal for driveline and axle sealing systems, engineered for differential service where fluid control is critical. The seal’s metric dimensions and polyacrylate material help it match the housing and shaft requirements found in many Nissan and Infiniti rear differential and front differential assemblies. This makes it a practical replacement for vehicles such as the Nissan 370Z, Infiniti Q50/QX70-era platforms, and older applications like the 240SX, 300ZX, and Pathfinder.

National has supplied sealing solutions for decades, and this part reflects that focus on dimensional accuracy and application coverage. If you are replacing a leaking differential seal on a Nissan 350Z, Infiniti G37, or Nissan Xterra, National 711070 provides a cataloged fitment reference for the correct axle differential seal application.

What This Seal Helps Address

• Differential gear oil seepage at the axle seal area
• Fluid loss from worn or hardened seal lips
• Contamination entering the differential through a damaged seal
• Noise or driveline concerns caused by low lubricant level
• Maintenance needs during differential service or axle repair

Installation Notes and Tips

Verify the differential type before ordering, since this seal is listed for Nissan R200, R200V, and R200A applications depending on vehicle and position. Confirm housing bore, shaft diameter, and width against the removed seal before installation. Clean the seal bore and shaft surface thoroughly, and inspect for scoring or wear that could affect sealing performance. Proper seating depth is important for a leak-free repair.

Fits 2014-2018 INFINITI Q70, rear with Nissan R200 Differential; fits 2009-2018 Nissan 370Z, rear with Nissan R200 Differential or Nissan R200V Differential; fits 2003-2008 Nissan 350Z, rear with Nissan R200 Differential or Nissan R200V Differential. National 711070 is also listed for additional Infiniti and Nissan rear and front differential applications across 1979-2018 model years.

Quality Assurance

National has a long history in sealing technology and continues to develop replacement solutions for modern vehicle platforms. Part number 711070 is cataloged as an axle differential seal with OE-style dimensional specifications for application matching.