66RFE Shift Kit 2010-2018, remanufactured and ready to install. Fits the 66RFE. Ships fast from the USA.
Although it is filed with our shift kits, this is a complete remanufactured valve body: a heavy-duty, 5-check-ball 66RFE and 68RFE unit for 2010-2018 Ram trucks, part number CR-2762BHD. It is for the owner whose truck is setting solenoid switch valve or pressure switch codes, dropping into limp mode, flaring between gears or locking the converter roughly, and who would rather bolt in a finished, upgraded valve body than rebuild the original on a bench. The heavy-duty build adds the upgrades a shift kit would, so you are not buying a kit and a valve body twice.
The valve body is the hydraulic control center of the RFE transmission. The solenoid pack bolts to it and switches oil to the clutches, five pressure switches report back to the computer which circuits are pressurized, and the solenoid switch valve redirects oil between the low/reverse clutch and the converter clutch circuit. Sonnax describes switch valve travel on the 1-2, 2-3 and 3-4 shifts, so a worn bore leaks pressure every time the truck shifts, and TransGo ties switch valve bore wear to codes P1775, P1776, P0841, P0871 and P0988. This unit is built with the fixes for those wear points:
The solenoid block is not included. You transfer your good solenoid pack or install a new one.
Read freeze-frame data with the codes, not just the code numbers. A pressure switch code with a clean, correct solenoid pack reading points to the valve body, while open or shorted solenoid circuits point to the pack or harness. Our 68RFE shift solenoid symptoms and testing guide covers the pressure switch thresholds and circuit checks, and 68RFE Ram 3500 Cummins shift problems walks through the switch valve and overdrive clutch connection. If the fluid is burnt and full of friction material, the clutches are already damaged and a valve body alone will not cure the slip.
This valve body covers 2010-2018 66RFE and 68RFE applications that use the 5-check-ball valve body. Count matters: TransGo builds separate kits for 7-check-ball (1999-2010) and 5-check-ball (2011-2018) RFE valve bodies, so a truck near the 2010-2011 change can have either. Count the check balls on your old unit or match the casting before ordering, and confirm your solenoid pack connector generation. It does not fit 2019-up 68RFE trucks, which Sonnax shows moved to a blue connector pack with separate TCC and reverse clutch control. For a lighter-duty option see the standard-duty 5-ball valve body, or browse our 68RFE parts page. Send us your year and VIN if you want us to check it.
| Fits | 66RFE 2010-2018 |
| Part type | Shift Kit |
| Condition | Remanufactured |
| 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.
It is a complete remanufactured heavy-duty valve body (CR-2762BHD) for 2010-2018 5-check-ball 66RFE and 68RFE units, with the upgraded parts already installed.
No. The solenoid block is not included. Reuse your pack if it tests good, or buy a new one so both control parts are fresh.
Count the check balls when the valve body is out, or match the casting. Earlier RFE units used 7 check balls and later 2011-2018 units use 5; trucks near the change can have either, so check before ordering.
If the cause is solenoid switch valve bore wear, yes, because this unit has an updated switch valve and oversized plugs. If a pressure switch circuit or the solenoid pack is bad, that part needs replacing too.
ATF+4 with a new filter. Clear codes and run the quick learn with a scan tool, then drive through all gears so shifts adapt.
No. The valve body is removed from below after the pan comes off.
