Overview
The Crown Automotive J8127397 is a transfer case input shaft bearing for SR4 transmission setups with 2.5L, 4.2L or 5.0L engines. It fits the 1980-1986 Jeep CJ7 in Base, Golden Hawk, Laredo, Limited and Renegade trims, and the 1981-1985 Jeep Scrambler in Base, Laredo, Renegade, SL and SR trims.
Key features
- Transfer case input shaft bearing
- It is for SR4 transmission applications with 2.5L, 4.2L or 5.0L engines.
- It fits CJ7 and Scrambler models.
- Identified by part number J8127397 and UPC 848399069136
Input shaft bearing replacement
The input shaft bearing supports the transfer case input as it turns, so it carries both radial load and the steady rotation of the transmission output. When it wears, the first signs are usually a hum or whine that changes with speed, and a feeling of play at the input when the case is moved. Because the bearing is reached from inside the assembly, the job normally starts with removing the case.
Before fitting the new bearing, clean the bore and inspect the seat for wear or rust that could let the bearing spin. Press the bearing in square and use the method the service procedure gives, since uneven force can mark the race. Check the input seal and output seals while the case is open, and keep the work area free of grit.
- Hum or whine that changes with speed
- Play at the input when the case moves
- Rust or wear in the bearing bore
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | J8127397 |
| UPC | 848399069136 |
| Part type | Transfer case input shaft bearing |
| Transmission | SR4 |
| Engines | 2.5L, 4.2L or 5.0L |
Vehicle fitment
It fits the 1980-1986 Jeep CJ7 and the 1981-1985 Jeep Scrambler, with trims for each model.
Years outside 1980–1986 for the CJ7 and 1981–1985 for the Scrambler, and Wrangler or Cherokee models, are not on this list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Replacing a transfer case input shaft bearing usually means removing the transfer case from the vehicle, so plan for that work.
What’s included
Input shaft bearing, part number J8127397.
Not included: Check the package contents for seals and hardware against your installation before starting.
