48RE Clutch Drum 2003-2007, used and ready to install. Fits the 48RE. Ships fast from the USA.
If your 2003-2007 Ram 2500 or 3500 pulls fine in reverse but will not move, or flares and slips in every forward gear, the rear clutch is the first pack to look at, and the rear clutch drum is the part it lives in. This is a used OEM 48RE clutch drum for that 2003-2007 window. The listing photo shows the drum with the input shaft in place and the hub marked 48RE, which is how the rear clutch housing comes out of these transmissions. It suits a rebuild where the original drum is cracked, the shaft splines are damaged, or the ring lands on the shaft are grooved.
ATSG describes the 46RE, 47RE and 48RE as having three driving clutches: a front (direct) clutch, a rear (forward) clutch, and the OD/direct clutch in the overdrive unit. The rear clutch is the forward clutch. Torque from the converter turbine comes in through the input shaft, and on these units that shaft is carried by the rear clutch housing, so this drum is the first rotating part behind the converter. When the rear clutch applies, it locks the input to the front planetary and the truck drives forward. Every forward gear depends on it, which is why a failure here usually shows up as no drive or a slip in all ranges rather than in one shift.
The 48RE adds one twist. Transmission Digest points out that on the 48RE the converter clutch solenoid is fed with forward clutch oil, not second gear oil as on the 46RE and 47RE. Leaks at the rear clutch circuit can therefore show up as converter lockup complaints, not only as slipping.
Check fluid level and condition first, then do a pressure check: low line pressure in every range points to the pump or valve body, while a forward-only problem points back to the rear clutch. On the bench, look for cracks at the drum lugs, chewed input shaft splines, worn sealing ring grooves on the shaft and a loose or scored bushing, then air-check the rear clutch piston once it is assembled. Our 48RE Cummins transmission problems guide walks through what fails on these trucks, and the 48RE pump failure symptoms article helps rule out low pressure from the pump before you blame the drum.
ATSG lists the 48RE in the 2003-2007 Dodge Ram pickup with the 5.9L Cummins diesel and with the 8.0L V10. This drum is listed for that range. Input shafts and drums changed within the RE family, so lay this assembly next to yours and match the shaft length, spline count, drum lug count and bushing before assembly. If you are not sure, send us your year and VIN and we will check it. The same assembly is also listed as the 48RE input drum for 2003-2007, and every other 48RE part is on the 48RE collection page.
Fit new shaft sealing rings, piston seals and a fresh rear clutch pack rather than reusing what came out. Soak the frictions in ATF+4, lube the seals, assemble the pack and air-check it before it goes in the case, then set the pack clearance with the selective snap ring to the spec in your manual; the ATSG 48RE rebuild manual has the figures. Because the pump bushing supports the front of this assembly, check the pump while the unit is apart; a 48RE pump is a common partner part. Chrysler lists an 8 pint service fill and 29-33 pints after an overhaul, so set the final level with ATF+4 hot, engine idling and the selector in Neutral.
| Fits | 48RE 2003-2007 |
| Part type | Clutch Drum |
| 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.
On the 48RE they are the same assembly. The input shaft is carried in the rear (forward) clutch housing, and the photo shows the drum with the shaft in place. It is also listed under 48RE input drum for 2003-2007.
The 48RE was used behind the 5.9L Cummins and the 8.0L V10 in 2003-2007 Rams. Match the shaft length, splines and drum to your old part, or send your year and VIN and we will confirm.
That pattern points at the rear clutch circuit: burned frictions, leaking piston seals, worn shaft rings or a cracked drum. Pressure-test and inspect before buying, since a stuck valve can cause the same complaint.
New rear clutch frictions and steels, piston seals, shaft sealing rings and a filter. Check the pump bushing and fill with ATF+4.
On the 48RE it can. The converter clutch solenoid is fed by forward clutch oil, so a forward clutch leak can upset lockup as well as cause slipping.
