48RE Overhaul Kit 2003-2008, remanufactured and ready to install. Fits the 48RE. Ships fast from the USA.
This listing is filed with our overhaul kits, but what you are buying is a complete remanufactured valve body for the 48RE behind the 5.9L Cummins in the Ram 2500 and 3500. It comes with the electronics already mounted: the overdrive and converter clutch solenoid pack with its harness and round case connector, plus the governor pressure solenoid and the later-style black rectangular governor pressure sensor. It is aimed at trucks that shift late and hard or early and soft, lose overdrive, will not hold lockup on the highway, or set governor and solenoid codes that keep coming back after the parts are swapped one at a time.
The valve body is the hydraulic brain of the 48RE. The manual valve routes oil according to the shifter position, the 1-2 and 2-3 shift valves move on governor pressure that the computer sets through the governor solenoid, and the solenoid pack handles the 3-4 shift and converter clutch apply. Throttle pressure from the throttle valve tells the unit how hard you are pushing, which is why worn valve bores show up as soft, flared shifts under load. The 48RE also runs more line pressure than the 46RE and 47RE it grew from: Sonnax measured a rise of roughly 22 to 28 psi in fourth gear or with the converter applied, against roughly 10 to 15 psi on the older units. That calibration lives in the valve body, so the 48RE pattern matters.
Set the fluid level hot first, then scan for codes. A weak pump can make a good valve body look bad, so rule that out with a line pressure test; our 48RE Cummins problems guide walks through what actually breaks on these trucks, and the overdrive and TCC solenoid guide shows how to test the solenoid pack at the case connector. If the solenoids test good and you still have erratic shifts, worn valve bores are the likely cause.
Listed for 2003-2008 48RE units. The valve body uses the 2000-and-later rectangular plastic governor pressure sensor. Two details change across these years. First, Transmission Digest notes that in 2005 the diesel 2500 and 3500 moved from a throttle valve cable to an electronic throttle valve actuator mounted on the case. Second, Sonnax notes that RE valve bodies come with a small or a large pump inlet. Compare the inlet, the throttle shaft and bracket, and the connectors against your old valve body before you install it, or send us your year and VIN and we will check it. More parts for this unit are on the 48RE parts page.
Bring the truck up to temperature, check the level again, and drive it through every gear before you tow.
| Fits | 48RE 2003-2008 |
| Part type | Overhaul 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.
No. It is a complete remanufactured 48RE valve body with the solenoid pack, harness, governor pressure solenoid and governor pressure sensor installed. Seals, sealing rings and frictions are not part of it.
The 2005 and later diesel trucks use an electronic throttle valve actuator instead of a cable. Compare the throttle shaft and bracket to your old valve body and set the adjustment bolt to the TTVA spec, or send us your VIN and we will confirm before it ships.
Yes. Transfer your original rooster comb, the manual valve detent lever, and inspect the park rod. Everything electrical comes already mounted.
They look alike, but the 48RE is calibrated for higher line pressure in fourth gear and lockup. Use a valve body built for the 48RE application so shift firmness and lockup holding match the Cummins torque.
Mopar ATF+4 or a licensed equivalent. Chrysler lists a service fill of about 8 pints after a pan drop; finish the level check hot, idling, in Neutral.
On a TTVA truck, leave the key on for at least 30 seconds so the computer recalibrates the actuator. Clear codes, then drive through all four gears and confirm lockup at cruise.
