66RFE Clutch Module, new and ready to install. Fits the 66RFE. Ships fast from the USA.
This 66RFE clutch module is a friction clutch pack, part number RCP96-232, for the six-speed automatic in gas-engine Ram heavy-duty trucks: the 2012-2018 Ram 2500 and Power Wagon with the 5.7L Hemi, the 3500 chassis cab, and the 2500 with the 6.4L from 2014. Owners and shops land on this part when the truck flares on the upshift with a trailer behind it, slips in the top gears, or the fluid comes out dark and burnt on a pan drop. It is a one-piece friction module, so the clutch packs going back into the drums all come from the same box.
Chrysler built the 66RFE by putting the internals and gearset of the diesel 68RFE into a 545RFE case. That matters for this part: the clutches inside are the 68RFE design, which is why this pack carries the 68RFE friction part number. The transmission shifts entirely with clutches, two at a time, with underdrive driving the lower gears, overdrive driving the upper gears, and the 2C, 4C and low/reverse clutches holding planetary members. The computer fills each clutch through a solenoid and checks the result with pressure switches and speed sensors. Worn frictions take longer to grab, and that extra slip is what turns into flare, heat and eventually a ratio code.
The listing is for one clutch pack module and nothing else. It is not a master rebuild kit. There are no separator plates, seals, sealing rings, gaskets or filter in the box, so plan on a soft-parts kit for the same job. The module is about 5.95 lb boxed.
Confirm it is the clutches and not the controls. Check the fluid level hot, then pull the pan and look at the filter. Friction material and a burnt smell mean a teardown. A clean pan points toward the solenoid pack, wiring or valve body. Because the 66RFE shares the 68RFE internals, the failure patterns in our 68RFE 3-4 clutch failure guide apply here, including the solenoid switch valve wear that partially applies the overdrive clutch. The RFE valve body testing guide shows how to check that before you install new frictions.
This module is listed for 2007-and-newer 66RFE and 68RFE units. The 66RFE itself only went into 2012-2018 gas Ram heavy-duty trucks, so on the 66RFE side those are the years that matter. It is not for the 65RFE in the Ram 1500, which uses the older 545RFE internals. Clutch counts can differ by build date, and a unit that has been rebuilt before may have an aftermarket overdrive housing with different plate counts. Lay out what you take out of each drum and compare it with the new pack, and if you are unsure, send us your year and VIN before ordering. All of our parts for this unit are on the 66RFE parts page, and the shared diesel parts are on the 68RFE page.
| Fits | 66RFE |
| Part type | Clutch Module |
| 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.
Gas-engine Ram heavy-duty trucks from 2012 to 2018: the Ram 2500 and Power Wagon with the 5.7L, the 3500 chassis cab, and the Ram 2500 with the 6.4L from 2014. The diesel trucks use the 68RFE, and the Ram 1500 uses the 65RFE.
The 66RFE uses 68RFE internals, including the gearset and clutches, inside a 545RFE case. The friction packs are shared, so the same pack serves both units.
No. It is the friction clutch pack module only. Seals, gaskets, sealing rings and the filter need to come from a separate overhaul or master rebuild kit.
Do not plan on it. The 65RFE is a recalibrated 545RFE with different internals. Match your transmission tag first and send us your VIN if you are not sure which unit you have.
ATF+4 only. Check and set the level with the fluid hot, then run the quick learn so the computer resets the clutch fill adaptives.
