Overview
The Crown Automotive J8121781 is an inner axle shaft seal for the front Dana 30 axle. Inner axle shaft seals keep lubricant inside the axle housing where the shaft passes through it.
The seal is made of steel and rubber and is designed for Dana 30 reverse and Dana 30 standard front axles.
Key features
- Inner axle shaft seal for front axles
- Steel and rubber construction
- Fits Dana 30 reverse and Dana 30 standard axle types
- Direct fit
Inner seal replacement tips
An inner axle shaft seal keeps lubricant in the housing and keeps dirt out where the shaft passes through. Because it sits behind the wheel and the axle shaft, leaks often show up as oil on the inside of the wheel or on the brake components. Before removing the shaft, drain or contain the lubricant and mark the seal orientation so the new seal goes in the same way.
Replace the seal together with the shaft bearing or retainer if they look worn, because a worn bearing can push lubricant past a new seal. Clean the bore thoroughly and check the seal surface on the shaft for grooves before installation, since a rough surface shortens seal life.
- Look for lubricant on the inside of the wheel
- Check the shaft surface for grooves before installing
- Drain or contain fluid before removing the shaft
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | J8121781 |
| UPC | 848399067033 |
| Axle location | Front |
| Axle type | Dana 30 reverse and Dana 30 standard |
| Material | Steel and rubber |
| Fit type | Direct fit |
Vehicle fitment
It is a front axle seal for the Dana 30 reverse and standard types. No vehicles or model years are named, so confirm fit for your vehicle’s year, model and trim before ordering.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Inner seal replacement usually means pulling the axle shaft first, so support the axle and note how the old seal sits before removal.
What’s included
Gather any other parts your installation needs before starting, since the seal is sold on its own.
