68RFE Shift Kit 2007-2018

A 2007-2018 Ram 2500 or 3500 with the 6.7L Cummins that bangs into gear, flares between shifts, slips in Overdrive with a load on, or throws itself into limp mode usually has a hydraulic problem in the valve body or an electrical one in the solenoid pack. This listing replaces both at once: it is a remanufactured 68RFE valve body that comes with the solenoid pack attached, ready to bolt in under the pan. It is not a loose shift kit, and there is no bench work to do before it goes in.

What the valve body and solenoid pack do in a 68RFE

The 68RFE is a six-speed clutch-to-clutch automatic with no governor and no throttle cable. The transmission computer pulses the solenoids on the pack, and each solenoid sends pressure into a circuit in the aluminum valve body below it. Pressure switches on the pack report back to the computer when each clutch circuit is actually charged. Line pressure is set by a pressure control solenoid working against the pressure regulator, and on a healthy truck idles around 60 to 70 psi. When a valve bore wears, pressure leaks away before it reaches the clutch, the computer sees the shift take too long, and it either adds pressure until the shift goes harsh or sets a code and goes to limp mode. Replacing the valve body and pack together removes both suspects in one repair.

Symptoms that point here

• Harsh engagements into Drive or Reverse, or a hard bang on a downshift
• Flare or slip on the 3-4 or 4-5 shift, the classic sign of a worn solenoid switch valve feeding the Overdrive clutch short
• Limp mode stuck in one gear after a pressure or ratio fault
• Pressure switch codes such as P0871 or solenoid circuit codes that return after clearing
• Shift quality that gets worse once the fluid is hot

How to confirm before you buy

Check fluid level and condition first; dark, burnt-smelling ATF+4 with clutch material in the pan means the clutches are damaged and a valve body alone will not save the transmission. Next, graph commanded line pressure, actual line pressure and line pressure duty cycle on a scan tool. If actual pressure tracks commanded and the duty cycle stays near the normal range, the pump and pressure control are doing their job and the leak is more likely in a valve circuit. Our 68RFE harsh shift causes guide separates software and adaptive issues from hardware, and the 68RFE pump failure guide helps rule out a low-pressure pump before you replace the valve body.

Fitment

This unit is listed for 2007-2018 Ram 2500 and 3500 trucks with the 6.7L Cummins and the 68RFE, and it cross-references to factory numbers 68244707AA, 68244707AB, 68033980AH, 68033980AJ and 68166834AN. Be careful across that span. The 68RFE started with a white-connector solenoid pack, and by 2010 Chrysler made running valve body changes and deleted the Overdrive solenoid on a new gray-connector pack. Those generations are not interchangeable without the matching valve body, pack and harness. Before ordering, look at your pass-through connector color and the part number on your old valve body and make sure they match what you are buying. If you are unsure, send us your year and VIN and we will confirm it. All of our parts for this transmission are on the 68RFE parts page.

Install notes

• Drain and drop the pan, remove the filter, unplug the case connector and remove the valve body bolts. Keep the manual valve lined up with the shift lever when lowering the old unit and installing the new one.
• Inspect the old filter and pan magnet. Heavy friction material or steel means the problem is already inside the clutch packs.
• Torque the valve body bolts to the factory spec in sequence; overtightening can distort the casting and cause the same leaks you are fixing.
• Install a new filter and a fresh pan gasket. A deep cast aluminum 68RFE pan adds fluid capacity for towing.
• Refill with ATF+4, check the level hot, and run the quick learn with a scan tool so the computer resets clutch fill. If the truck still shows low line pressure, look at the pump next; a RFE pump valve repair kit covers the pressure regulator and converter valves in the pump.

Does this come with the solenoid pack?

Yes. It is a remanufactured valve body with the solenoid pack included, so it bolts in as a complete assembly.

Will a 2008 valve body work on my 2014 Ram?

Not without matching parts. Around 2010 the 68RFE changed from a white-connector solenoid pack to a gray-connector pack with the Overdrive solenoid deleted, along with running valve body changes. Match your connector color and old valve body part number, or send us your VIN.

Will a new valve body fix a slipping transmission?

Only if the clutches are not already burned. If the pan has heavy friction debris or the fluid smells burnt, the clutch packs need a rebuild and the valve body should be replaced during that rebuild.

What fluid does it need?

ATF+4 only. Check the level with the engine running and the fluid hot after the install.

Do I need a scan tool after installing it?

Yes. Run the quick learn so the computer relearns clutch fill times. Without it, the first shifts can feel harsh or soft until the adaptives settle.

• 68RFE Harsh Shift Causes and Fix: Software, Adaptives or Hardware
• 68RFE Pump Failure: Symptoms, Diagnosis, and Replacement
• 68RFE Shift Solenoid Symptoms, Testing and Replacement
• 68RFE Ram 2500 Cummins Common Problems and Fixes