47RE Planetary 1997, used and ready to install. Fits the 47RE. Ships fast from the USA.
If your 1997 Dodge Ram 2500 or 3500 with the 5.9L Cummins and 47RE whines in first and reverse, or the teardown turned up a rear ring gear with chipped teeth, this listing gives you both halves of the rear gear set. It is the rear planetary carrier together with its mating rear annulus (ring) gear, removed from a 1997 diesel 4x4 47RE that was parted out. The carrier is a four-pinion aluminum design, and the parts are in good used condition. Getting the carrier and ring gear as a matched pair means the teeth have already worn in together, which is a better bet than pairing a new carrier with a tired annulus.
The main case of the 47RE uses two simple planetary sets that share one sun gear, fed by the sun gear driving shell. The rear annulus rides on the intermediate shaft, so it is always tied to the output. The rear carrier is the reaction member: in first gear in Drive it is held by the overrunning clutch, and in manual 1 and Reverse the rear band clamps the low-reverse drum to hold it. That puts the rear set to work in two places. In first gear it combines with the front set for the 2.45:1 starting ratio. In reverse it carries the load alone, with the front clutch driving the sun, for the 2.21:1 reverse ratio. In second and third it simply turns along without carrying torque, which is why a worn rear set is usually quiet once the truck is moving.
Use the gear pattern. Noise in first and reverse that disappears in second and third points to the rear section; noise only in fourth points to the overdrive gear set instead. The factory road-test chart also helps: slip in first in D and 2 but not in manual 1 is the overrunning clutch, not the gears, and a reverse slip can be the rear band or front clutch. Our 47RE Ram 2500 Cummins shift problems guide walks through that road test. With the unit apart, check each pinion for play and the annulus teeth for chips or cracks.
These parts came from a 1997 47RE behind the 12-valve 5.9L Cummins in a 4x4 Ram. The rear gear set design carried through most of the 1996-2002 47RE production, but the rear annulus and intermediate shaft splines were revised at points, and 2WD and 4x4 output sections differ. Compare the spline count and tooth count of your old annulus and carrier with these parts, or send us your year and VIN before ordering. Browse the 47RE parts collection for the rest of the gear train.
| Fits | 47RE 1997 |
| Part type | Planetary |
| Condition | Used |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes. You get the rear planetary carrier and its rear annulus (ring) gear, both from the same 1997 47RE. Thrust washers, thrust plates and snap rings are not included.
It is the rear planetary in the main case, the one that works in first gear and reverse. It is not the front planet or the overdrive gear set.
The rear gear set only carries torque in first and reverse. In second and third it turns along without load, so worn rear pinions or a chipped ring gear tend to be loudest pulling away and backing up.
It came out of a 1997 4x4 diesel 47RE. The rear set is shared across much of the 1996-2002 run, but splines and output parts changed, so compare your old parts or send us your year and VIN.
Use ATF+4. Adjust the 47RE rear band by tightening to 72 in-lb and backing off 3 turns, and the front band by backing off 1-7/8 turns, then check the level hot.
