45RFE Solenoid Kit 1999-2018, remanufactured and ready to install. Fits the 45RFE. Ships fast from the USA.
The 45RFE four-speed went into Dodge Ram 1500, Dakota and Durango trucks and into the Jeep Grand Cherokee, Liberty and Commander. When one of them suddenly will not upshift past one gear, refuses Reverse, or sets a solenoid code after a long drive, the solenoid pack is a frequent cause. This is a remanufactured 45RFE solenoid pack sold as a pan-down kit. The listing photo shows four pieces: the pack with a black 23-pin connector, the flat sump filter with its pickup tube, the spin-on cooler return filter and a rubber pan gasket. The listing states a 1-year warranty.
According to the ATSG article in Transmission Digest, the computer runs seven solenoids on this transmission: line pressure control, underdrive, overdrive, 2nd clutch, 4th clutch, low/reverse (which doubles as the converter clutch solenoid) and multi-select. Three of them, line pressure, underdrive and multi-select, are normally applied. That design is the 45RFE's built-in limp mode: if the computer drops power to the pack, those three still send oil and the truck keeps third gear in Drive and second in the manual low ranges. The multi-select solenoid also feeds the low/reverse clutch through the manual valve in Reverse, and the computer can energize it to block Reverse if the output speed sensor says the vehicle is still rolling forward.
All the solenoids on this pack share one power feed at pin 10 of the connector. GEARS Magazine gives about 1.8 ohms for each shift solenoid and about 3.7 ohms for the pressure control solenoid when measured from pin 10, and about 300 ohms from pin 10 to the pressure switch pins 11, 14, 15 and 16. A reading near zero is a short, and an open reading is a broken coil. Check the case connector and harness for oil intrusion and bent pins at the same time. The full test sequence is in our 45RFE shift solenoid guide. If your codes point to line pressure rather than a single solenoid circuit, work through the pressure control solenoid guide first.
The listing covers the 45RFE from 1999 to 2018, but the pack in the photo has a black pass-through connector. Transmission Digest identifies black as the original, noisier pack design and notes Chrysler changed to a white connector design in 2004. That makes this kit the natural match for early trucks and Jeeps that still have the black-connector pack. If the pack on your transmission has a white or gray connector, do not assume this one will plug in: send us your year, model and VIN, or compare your old pack against the other options in our 45RFE parts collection.
With the pan down, remove the sump filter, unplug the case connector and unbolt the pack from the valve body. Keep the valve body bolted together so no check balls fall out. Fit the new pack, then the new sump filter, the spin-on cooler return filter and the pan gasket from this kit, and refill with ATF+4. Chrysler requires a Quick Learn with a scan tool after a solenoid pack change, run with oil between 60 and 200 F. If the fluid came out dark with clutch material in the pan, the pack is not the whole job; look at a 45RFE overhaul kit or the RFE master rebuild kit with 4WD filter instead.
| Fits | 45RFE 1999-2018 |
| Part type | Solenoid 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.
The listing photo shows a solenoid pack with a black 23-pin connector, a sump filter, a spin-on cooler return filter and a pan gasket. Fluid is not included; plan on ATF+4.
Chrysler moved to a white connector pack in 2004, and this pack has the black connector. Look at the plug on your existing pack. If it is white, send us your VIN before ordering so we can confirm a matching pack.
The listing describes it as remanufactured, with a 1-year warranty.
Third in Drive and second in manual low is the 45RFE failsafe the computer uses when it cuts power to the pack. A bad pack is one cause, but so are wiring faults, low system voltage and sensor or ratio codes, so read the stored codes and meter the pack before replacing it.
Yes. Chrysler lists solenoid pack replacement as one of the repairs that requires a Quick Learn, which needs a scan tool that supports it.
