545RFE Input Drum 2007-17, new and ready to install. Fits the 545RFE. Ships fast from the USA.
If your 5.7 HEMI Ram 1500, Durango, Grand Cherokee or Commander started flaring between third and fourth, setting P0733 or P0734, or dropping into a third-gear limp mode, the teardown usually ends at the input clutch assembly. This is a new, genuine Mopar input drum for 2007-2017 RFE transmissions, the aluminum housing with the slotted lug section shown in the photo. It arrives in the Mopar box, and the listing references part number 4799648AE with the earlier AD and AB numbers it replaced. Use it when the old housing is cracked, heat-checked or worn at the lugs or sealing surfaces, because fresh clutches in a damaged drum fail again fast.
The input shaft drives the input clutch assembly, and this drum is its outer housing. It carries the three driving clutches: underdrive (UD), overdrive (OD) and reverse. Chrysler's 545RFE clutch application chart shows how much work that is. UD is applied in first, second, second prime and third. OD is applied in third, fourth and fifth, and reverse applies only with the low/reverse clutch in R. Every forward gear and reverse therefore depends on a clutch that lives in this drum. Its lugs drive the steel plates, and its bores and ring lands hold the oil that applies each piston. When the lugs notch, the housing distorts from heat or a ring land wears, the clutches cannot hold full torque and the transmission controller sees the slip as a ratio error.
A burned OD pack is often a hydraulic problem first. Chrysler's P0733 and P0734 procedures list OD bleed orifices, the dribbler orifice, reaction shaft support seal rings, switch valve wear and the 4C tower seal as causes, so check fluid level hot and road test with the clutch chart in mind: slip in third, fourth and fifth together points at OD, while slip in first through third points at UD. Our 45RFE 3-4 clutch failure guide walks through those codes, and the valve body testing guide covers the switch valve checks. With the unit apart, inspect the drum for blue heat marks, cracked or hammered lugs, and scored ring lands, and air check each clutch at about 30 psi.
This drum is listed for 2007-2017 RFE units, which includes the 545RFE behind the 5.7 HEMI in that window and the 68RFE behind the 6.7L Cummins in Ram 2500 and 3500 trucks. TransGo's RFE instructions point out that 1999-2006 transmissions may already have been repaired with a 2007-up drum, so do not go by the model year alone. Their check is to measure from the top of the drum to the top of the 0.061 in. flat snap ring: about 1.960 in. on 2007-up drums and 1.907 in. on 1999-2006 drums. The UD/OD pressure plate also changed: 68009902AC for 2007-up and 68009108AA for 1999-2006. If your unit measures as the earlier type, choose the 1999-2007 545RFE input drum instead. Not sure? Send your year and VIN and we will confirm before it ships, or browse the 45RFE and 545RFE parts page.
| Fits | 545RFE 2007-17 |
| Part type | Input Drum |
| Condition | New |
| 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.
Possibly, if the unit was already updated, but 1999-2006 drums are a different depth. Measure from the top of the drum to the top of the flat snap ring: about 1.960 in. means 2007-up and 1.907 in. means 1999-2006. For an original early unit, use the 1999-2007 drum or send us your VIN.
The underdrive, overdrive and reverse clutches. UD drives first through third, OD drives third through fifth, and reverse applies with the low/reverse clutch in R.
New. It is a genuine Mopar drum supplied in the original box, referenced as 4799648AE with the earlier AD and AB numbers.
New piston seals, input shaft sealing rings, the UD/OD/reverse frictions and steels, and the filter. Then set each clutch clearance to spec and air check before assembly.
Mopar ATF+4 only. After the rebuild, perform the quick learn with a scan tool and drive through all gears so the controller adapts to the new clutches.
The drum is listed for 2007-2017 RFE units including the 68RFE behind the 6.7L Cummins. Send your year and VIN if you want us to confirm before ordering.
