Overview
The Crown Automotive J8122690 is a replacement reduction unit bearing for the Quadra-Trac transfer case, identified by part number J8122690 and UPC 848399067255. It fits the 1976–1979 Jeep Cherokee (SJ), CJ7 and Wagoneer (SJ).
Crown Automotive describes itself as a manufacturer and distributor of replacement parts for Jeep vehicles, including many factory-discontinued items. This is a single bearing component, so match the part number to your transfer case before installing it.
Key features
- Designed for use with the QuadraTrac transfer case
- Replacement reduction unit bearing, as named in the title
- Crown Automotive part number J8122690
- Direct fit for the vehicles below
Reduction unit bearing care
A reduction unit bearing carries load through the gear set in the transfer case, so wear shows up as noise or looseness that changes with speed. Whining, rattling or play in the gears under load are common signs that the bearing is nearing the end of its life. Check for them before removing the case, not after the parts are back together.
Because the bearing sits inside the case, the gears, shafts and seals around it are often serviced at the same time. Clean all mating surfaces, check shaft ends for wear, and use fresh gasket material when reassembling. Keep the old bearing for comparison with the new part number before fitting.
- Listen for whine or rattle under load
- Check shaft ends and gear teeth
- Compare part numbers before fitting
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | J8122690 |
| UPC | 848399067255 |
| Application | For use with QuadraTrac transfer case |
| Part type | Transfer case reduction unit bearing |
| Fitment type | Direct fit, per the manufacturer fitment list |
Vehicle fitment
The manufacturer fitment list covers the following vehicles:
- 1976–1979 Jeep Cherokee (SJ), Base, S and Wide Track trims
- 1976–1979 Jeep CJ7, Base, Golden Eagle and Renegade trims
- 1976–1979 Jeep Wagoneer (SJ), Base, Custom and Limited trims
Other Cherokee years, other CJ models and Wagoneer years outside 1976–1979 are not covered by this list. Confirm your vehicle’s year, model and trim before ordering.
What’s included
Check the package contents against your installation before starting.
Not included: The transfer case itself is not part of this bearing.
