66RFE Banner Rebuild Kit 2014, new and ready to install. Fits the 66RFE. Ships fast from the USA.
The 66RFE is the six-speed automatic Ram used behind gasoline HEMI engines in its heavy-duty trucks, and by the time one reaches high mileage from towing, plowing or hauling, the clutches and seals are usually the first thing to go. If your 2014 Ram 2500, 3500 or 3500 chassis cab with a gas V-8 is slipping between gears, slow to engage, or showing dark fluid, this new 66RFE banner rebuild kit for 2014 gives you the soft parts for an overhaul in one order.
A banner kit packages the overhaul gaskets and seals with new friction plates and a filter. Those are the pieces that harden, glaze or burn first. The 66RFE is something of a hybrid: Raybestos describes it as a six-speed first produced in 2012 for gas-engine Ram 2500 and 3500 trucks that uses a 545RFE case but carries many of the same internals and the gearset of the 68RFE. Like every RFE unit it is clutch-to-clutch with no bands, so each clutch is applied by a sealed piston, and a leaking seal or a glazed friction translates straight into slip.
This is the detail that trips up a lot of 66RFE rebuilds. Raybestos splits the 66RFE friction parts at 2014. The 2012-2013 units use one overdrive friction and steel pack, and 2014-on units use a different overdrive friction and a different steel pack. A kit built for the wrong half of the run will not stack up to the correct clearance. This listing is for 2014, so it belongs on a 2014-on 66RFE, not on a 2012 or 2013 truck.
The 66RFE shares most of the 68RFE's hydraulics, so it also shares its main failure pattern. Sonnax lists both burned overdrive and burned 4th clutches on its 66RFE unit page and points the repair at the solenoid switch valve and its plugs. In its RFE overdrive clutch troubleshooting article, Sonnax names the switch valve bore plug as the heaviest wear point and vacuum testing as the way to prove it. Our RFE valve body testing guide walks through those checks, and the shift solenoid guide covers solenoid pack faults that can look like clutch slip.
Listed for the 2014 66RFE. Ram paired the 66RFE with the 5.7L HEMI in its Heavy Duty pickups, and for 2014 with the new 6.4L HEMI in the 3500 chassis cab, but a gas chassis cab could also have the Aisin six-speed, and a diesel Ram has a 68RFE, never a 66RFE. The fastest check is the transmission sales code on the build sheet: DFP is the 66RFE. A 2014-on 66RFE should also have the gray solenoid pack connector. Confirm the code and year, or send us your year and VIN before ordering. 66RFE and 68RFE hard parts are grouped on our 68RFE collection page, since many of them cross over.
| Fits | 66RFE 2014 |
| Part type | Banner Rebuild Kit |
| 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.
Not as listed. Raybestos changes the 66RFE overdrive friction and steel pack at the 2014 model year, so 2012-2013 units need the earlier parts. This kit is listed for 2014.
Check the transmission sales code on the build sheet or window sticker. DFP is the 66RFE. A diesel Ram uses the 68RFE or Aisin, and a gas chassis cab can have either the 66RFE or the Aisin, so do not go by engine alone.
No. It uses a 545RFE-style case with many 68RFE internals and the 68RFE gearset, so some hard parts cross over, but friction parts and kits are application specific.
Mopar ATF+4. Check and set the level with the fluid at full operating temperature.
Inspect the pump, bushings and input drum, replace any heat-damaged steels, and repair the valve body solenoid switch valve bore if it fails a vacuum test. A burned overdrive clutch almost always has a valve body cause.
