FAG SS4425 Differential Pinion Seal - Rear

Reliable Differential Pinion Seal for Nissan and Infiniti Vehicles

The FAG SS4425 differential pinion seal is engineered to provide effective sealing performance for driveline components. Designed specifically for Nissan Pathfinder and Infiniti QX4 models, this seal helps maintain optimal differential function by preventing fluid leaks and contamination.

• Seal Type: Rubber with spring and auxiliary lip for enhanced sealing
• Sealing Material: Durable polyacrylate for resistance to wear and fluid degradation
• Bore Diameter: 75.997 mm (outer), 2.992 mm (inner)
• Seal Outside Diameter: 76.2 mm and 3 mm (dual measurements for fitment precision)
• Seal Width: 11.989 mm and 1.654 mm for proper axial fit

Technical Details and Specifications

The FAG SS4425 differential pinion seal features a robust rubber construction combined with a spring and auxiliary lip design to ensure a tight seal around the pinion shaft. The polyacrylate sealing material offers excellent resistance to heat, oil, and other automotive fluids, extending the service life of the seal. Precise bore and outside diameters ensure compatibility with the differential assemblies of Nissan Pathfinder and Infiniti QX4 models, minimizing the risk of leaks and mechanical failure.

Compatible Vehicles and Applications

This differential pinion seal is compatible with the following vehicles:

• Nissan Pathfinder
• Infiniti QX4

It is designed to maintain the integrity of the differential by preventing oil leaks and contamination, which can lead to drivetrain issues.

Common Issues Addressed by the SS4425 Differential Pinion Seal

• Prevents differential oil leaks that cause lubrication loss
• Reduces contamination ingress to protect internal components
• Minimizes wear on the pinion shaft and bearings
• Helps maintain proper differential pressure and performance
• Prevents premature failure of driveline components

Installation Notes and Tips

When installing the FAG SS4425 differential pinion seal, ensure the sealing surfaces are clean and free of debris. Use appropriate tools to avoid damaging the rubber lip or spring during installation. Verify the seal dimensions match the differential housing specifications for Nissan Pathfinder or Infiniti QX4 models. Proper installation will help maintain the seal’s effectiveness and extend the service life of the differential.

Quality Assurance and Warranty

FAG manufactures the SS4425 differential pinion seal to meet strict quality standards, using high-grade materials and precision engineering. While specific warranty details are not provided, FAG products are generally backed by manufacturer quality controls to ensure reliable performance in automotive driveline applications.