66RFE Clutch Module 2014, new and ready to install. Fits the 66RFE. Ships fast from the USA.
This listing is a Raybestos steel clutch plate module, part number STMCHRY12, for the 66RFE six-speed from 2014 on. That covers the gas Ram 2500 and Power Wagon with the 5.7L Hemi, the 3500 chassis cab, and the 2500 with the 6.4L Hemi that arrived for 2014. It is the steel half of the clutch packs, not the frictions. Rebuilders buy it when the old steels came out blue, heat-checked or dished after a slip, because new frictions laid against warped steels shudder and burn again.
The 66RFE uses the clutch design from the diesel 68RFE inside a 545RFE-type case, and every gear is made by two multi-plate clutches applied together. In each pack the lined frictions alternate with plain steels. When the piston squeezes the stack, the steels are what the frictions grip, and they are also the main heat sink, soaking up the energy of every shift and passing it to the fluid. A steel that has been overheated loses its flat, smooth face. It grabs unevenly, chatters, and keeps cooking the fresh lining next to it.
Raybestos lists the STMCHRY12 contents as:
Raybestos says the plates are made in the USA to OE thickness and to OE specs for flatness and parallelism. No frictions, seals or gaskets are included.
Steels are judged on the bench. Clean each one, lay it on a flat plate, and look for color change, scoring and dishing. Find out why the clutch burned in the first place, because a valve body leak or low pump output will ruin new plates as fast as old ones. Our RFE 3-4 clutch failure guide covers the overdrive pack, and the pump failure guide covers the line pressure checks to run first.
Raybestos catalogs the STMCHRY12 for the 2014-and-newer 66RFE. Our title says 2014 because that is the first year it covers. The 2012-2013 66RFE takes a different steel pack, so match your year before ordering, and do not use this in a 65RFE from a Ram 1500. A unit with an aftermarket overdrive housing can carry different plate counts, so count what comes out of each drum and compare it with the list above. Not sure what you have? Send us your year and VIN. All 66RFE parts are on the 66RFE parts page.
| Fits | 66RFE 2014 |
| Part type | Clutch Module |
| Condition | New |
| Brand | Raybestos |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. It is the steel plates only, Raybestos STMCHRY12: 4 for 4C, 3 for 2C, 5 for underdrive and reverse, and 3 for overdrive. Frictions are sold separately.
The 66RFE from 2014 on, which is the gas-engine Ram 2500 and Power Wagon with the 5.7L Hemi, the 3500 chassis cab, and the 2500 with the 6.4L Hemi. It is not for the 2012-2013 66RFE, the 65RFE in the Ram 1500, or the diesel 68RFE.
Only if they are flat, smooth and show no heat color. Steels that sat next to a burnt friction usually took the same heat, and reusing them is a common reason a rebuild shudders right away.
A matching friction set, a soft-parts kit with piston seals and sealing rings, and a filter. Inspect the pump and drums while the unit is apart.
Mopar ATF+4 only. Set the level with the fluid hot and run the quick learn so the controller relearns clutch fill on the new plates.
