Rear Axle Shaft Oil Seal

This rear axle shaft oil seal is a small but critical barrier that keeps gear oil inside the rear axle while blocking water, dust, and road grit from getting in ?. It’s needed because the axle shaft constantly rotates at speed, and without a tight seal, lubricant will escape and the differential area can run dry.

How It Works

The seal’s flexible lip rides on the axle shaft surface, creating a controlled contact line. A reinforced outer case locks into the axle housing, while the lip maintains pressure as the shaft turns. This helps keep the correct oil level, reduces friction heat, and protects bearings and splines from premature wear.

What Happens If It’s Broken

If the seal hardens, cracks, or gets scored, you may see oil seepage near the wheel/axle area, a burnt oil smell, or a low differential oil level. Continued driving can lead to noisy bearings, overheating, poor lubrication, and expensive axle or differential damage ?.

Compatible Models

• Outlander<Phev>