Overview
The Crown Automotive J0992289 is a rear mainshaft bearing for the T14 manual transmission. It fits 1967-1972 Jeep CJ5 and CJ6 models, the 1967-1971 Jeep Commando, and J-series trucks from 1967 to 1972.
The bearing is a rear position part with a direct fit. Confirm the bearing type and dimensions against the original by part number before fitting.
Key features
- Rear position mainshaft bearing for T14 transmissions
- Crown part number J0992289 with UPC 848399057218
- Covers CJ and J-series Jeep models in the listed years
- Marked by the manufacturer as a direct fit
How the mainshaft bearing works
The rear mainshaft bearing supports the rear end of the mainshaft inside the T14 case and keeps the shaft aligned while the gears turn. It carries radial load from the gears and must hold the shaft steady so the gear mesh stays correct. When it wears, the mainshaft can shift slightly, and the result is often a whine, rough gear engagement or a sense of play in the shifter.
Replacing the bearing usually means removing the mainshaft, so it is a job best done with the transmission on a bench. The old bearing should come off with a puller that grips the inner race, and the new one should be pressed on with the load applied to the inner race only. Check the bore and shaft seat for scoring before fitting, since a damaged seat will make even a new bearing run loose.
- Turn the shaft by hand and feel for roughness or play
- Look for blue or discolored races as signs of heat
- Inspect the rear bearing retainer and its seal
- Replace gaskets when the case is reassembled
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | J0992289 |
| UPC | 848399057218 |
| Position | Rear |
| Transmission | T14 |
| Part type | Mainshaft bearing |
Vehicle fitment
The manufacturer list includes the 1967–1972 Jeep CJ5 and CJ6, the 1967–1971 Jeep Commando and the J-2500 through J-4800 trucks in their listed years, all in the Base trim.
Jeep Wagoneer models and any Jeep J-series trucks after 1972 are not on this list. Confirm your vehicle’s year, model and trim before ordering.
What’s included
Gather the bearing and any extra hardware before you start the job.
