66RFE Master Rebuild Kit 2019, new and ready to install. Fits the 66RFE. Ships fast from the USA.
Searching for a fix for overdrive slip, a flare into 4th or a burnt overdrive clutch on a 2019 or newer Ram 2500 or 3500? This listing is not a box of frictions and steels. The product photo shows a valve body master repair kit marked "CR-2769-RKM, 2019 and later": the hard parts that cure the leaks inside the valve body, which is where most RFE overdrive clutch failures begin. If you are rebuilding a 2019-up unit, this is the piece that keeps the new clutches from burning up again.
The photo labels each component:
Rob Faucett's GEARS Magazine article names valve body track erosion as the most common cause of 68RFE overdrive clutch burn-up, made worse by added torque from tuned engines, and lists a billet channel plate or a bonded separator plate as the fix that is holding up in the field. The same article and Sonnax both single out the switch valve plug bore: the plug moves on every 1-2, 2-3 and 3-4 shift, wears the bore, and lets overdrive apply pressure leak away.
Pull the valve body and look at the channel plate for eroded tracks, then vacuum test the switch valve plug bore; GEARS recommends repeating the vacuum test after the repair to prove it. Our 68RFE valve body testing guide covers the checks step by step, and the Ram 3500 shift problems guide helps separate a valve body fault from a solenoid or sensor fault. A cracked or badly warped valve body cannot be saved with plates; it needs replacing.
The kit is marked for 2019 and later valve bodies. Our listing title calls it a 66RFE kit, but the 66RFE gas-engine unit ended after 2018, so in practice this kit is for the 2019-up 68RFE behind the 6.7L Cummins in Ram 2500 and 3500 trucks. The 2019 update changed the valve body, so do not use it on a 2007-2018 unit. Compare your separator plate and channel plate against the photo, or send us the year and VIN to confirm. Other 2019-up parts are in the 68RFE collection.
| Fits | 66RFE 2019 |
| Part type | Master 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.
No. It is a valve body repair kit: billet channel plate, blocked separator plate with gaskets, solenoid switch valve and plugs, accumulator pistons and seals, and bolts. Clutch packs and transmission gaskets are sold separately.
No. It is marked for 2019 and later valve bodies. 2007-2018 units use a different valve body layout.
If the valve body tracks are eroded or the switch valve bore leaks, the overdrive clutch gets low apply pressure and will burn again. Fixing the valve body protects the new clutches.
Added torque from a tuner is one of the reasons the cast plate erodes, which is why billet channel plates are a common fix on modified trucks. Clutch capacity still has limits, so tell your builder about the tune.
Fill with Mopar ATF+4, check the level hot, run a TCM quick learn, and road test through every gear while watching line pressure.
