Drive Pinion Oil Seal for Rear Differential ️

This oil seal is a small but critical barrier that keeps gear oil inside the differential where the drive pinion shaft exits the housing. It is needed to maintain correct lubrication of ring-and-pinion gears, reduce heat, and protect bearings from running dry. A healthy seal also blocks dust and water from entering the axle assembly.

How It Works ⚙️

The seal presses into the differential case and its flexible sealing lip rides on the rotating pinion flange/yoke. A spring-loaded lip design maintains steady contact as the shaft spins, while the outer shell locks tightly in the bore to prevent seepage around the edges.

What If It’s Worn or Broken

When the seal hardens, cracks, or gets grooved, gear oil can leak onto the underbody and driveshaft. Low oil level leads to whining noises, overheating, metal wear, and eventually differential failure. Continued driving may damage gears and bearings, turning a simple seal job into a major rebuild.

Compatibility ✅

• Infiniti QX60
• Infiniti JX