48RE Planetary 2005, used and ready to install. Fits the 48RE. Ships fast from the USA.
If your 2005 Ram 2500 or 3500 with the 5.9L Cummins grinds or howls in first and reverse, lost reverse entirely, or left a pile of metal on the pan magnet, the rear planetary is one of the first hard parts to inspect. This listing is a used six-pinion steel rear planetary carrier with its rear ring gear (annulus), pulled from a 2005 48RE. You get a matched carrier and ring gear that have already run together, which is the practical way to replace a geartrain section without hunting down each piece separately.
The front section of the 48RE is the same three-speed layout Chrysler has used since the TorqueFlite: two simple planetary sets that share one sun gear, which is driven or held through the driving shell. In the factory service manual for the 46/47RE that the 48RE grew from, the rear planetary and rear annulus sit on the output shaft behind the front set. In first and reverse the rear carrier is the reaction member, held by the overrunning clutch in Drive and by the low-reverse band in manual low and reverse. That means the rear set carries the heaviest torque the transmission sees, at launch and when you back a loaded trailer. On a Cummins truck that is exactly where a tired carrier lets go. The overdrive unit behind it has its own separate planetary, so a rear planetary failure and an overdrive failure produce different symptoms.
Drop the pan first. Fine gray paste is normal wear; shiny chips, needle bearings or chunks of washer point at the geartrain. Then drive the truck in first, second and reverse and note which ranges make the noise. Noise that goes away in fourth points toward the overdrive unit instead. Our 48RE Cummins failure points guide walks through what breaks first on these trucks, and Ram 2500 Cummins common problems covers the noise and slip complaints owners report. With the unit on the bench, spin each pinion and rock it on its pin. The factory manual says to replace the planetary set if gears, pinion pins or the carrier are damaged in any way.
This set came out of a 2005 Ram 48RE, and the listing describes it as the six-pinion steel rear planetary for 2003 through 2007 Ram 2500/3500 trucks with the 5.9L Cummins. 2005 is also the year Chrysler moved the diesel trucks to an electronic throttle valve actuator, but that change is in the valve body controls, not the geartrain. Still, units get rebuilt and parts get swapped over the years, so compare this carrier to yours before installing: pinion count, spline count on the carrier and ring gear, and the thrust washer tab pattern. If you are not sure, send us the year and VIN and we will check what we can. See every hard part for this unit on our 48RE parts page.
| Fits | 48RE 2005 |
| 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. This is the rear planetary carrier together with its rear ring gear (annulus), both pulled from a 2005 48RE.
The listing describes this six-pinion steel rear set as fitting 2003-2007 Ram 2500/3500 Cummins 48RE units. Because rebuilt transmissions may have mixed parts, match pinion count, splines and thrust washer tabs to your old set, or send us your year and VIN.
Probably not. The 48RE overdrive unit has its own planetary. Noise only in fourth gear points to the overdrive planetary, its thrust bearing or the output shaft bearings, not the rear planetary in the main case.
Replace the tabbed thrust washers, inspect the sun gear and driving shell bushings, inspect the overrunning clutch that holds the rear carrier in first, and clean or replace the cooler if the pan had metal in it.
ATF+4. Chrysler warns that a non-specified fluid can cause poor shift quality and torque converter shudder.
