45RFE Solenoid Kit 2002-2012, remanufactured and ready to install. Fits the 45RFE. Ships fast from the USA.
A four-speed 45RFE in a Dakota, Liberty, Durango, Ram 1500 or Grand Cherokee that goes into limp mode, refuses reverse, or throws a pressure switch code after a hot drive is often suffering from a tired solenoid pack. This 2002-2012 kit puts the pack and the service parts in one box. The listing photo shows a solenoid pack with its round 23-pin connector and green seal, a sump filter, a spin-on cooler return filter and a pan gasket, so the electrical repair and a full filter service happen in a single pan drop.
The 45RFE was the first of Chrysler's RFE family, and Sonnax describes it as the first fully electronic rear-wheel-drive transmission in the Chrysler lineup. Instead of 1-2, 2-3 and 3-4 shift valves and a governor, the computer energizes solenoids in this pack to apply the underdrive, overdrive, 2nd, 4th and low/reverse clutches, while a variable force solenoid sets line pressure. Pressure switches in the same assembly report back which clutches are actually applied. Transmission Digest's ATSG article on the multi-select solenoid explains why this matters on a 45RFE: that solenoid routes oil through the manual valve to different circuits by range, and when it sticks the unit can block reverse or fall back to a failsafe gear even though the clutches are healthy.
Check fluid level and condition first, because low ATF+4 can set pressure switch codes on its own. Then unplug the 23-pin connector at the case, inspect the pins and the harness for wicked fluid, and measure each solenoid. Sonnax publishes about 1.3 ohms for each shift solenoid and about 3.5 ohms for the pressure control solenoid; an open or shorted coil confirms the pack. Chrysler's diagnostic for P0750 says it is an electrical fault and warns against swapping the valve body for it. A pressure switch code with good coils can point at a seal leak, the pump or a check ball instead, so read our 45RFE line pressure and pressure control solenoid guide and the broader 45RFE and 545RFE problems guide before ordering.
This kit is listed for 45RFE transmissions from 2002 through 2012. The pack in the photo is the white-connector, six-solenoid design that Sonnax dates from 2000 to 2009. From 2010 Chrysler built a gray-connector pack with one solenoid removed and two valve body check balls deleted. Sonnax notes the white pack was used to service later units during gray-pack shortages, but the gray pack cannot back-service earlier six-solenoid transmissions. Look at the plug color on your current pack and, if it is gray or you are unsure, send us your year and VIN first. Browse other RFE parts on the 45RFE and 545RFE collection page.
With the pan off, disconnect the case connector, unbolt the pack from the valve body and inspect the old pack's seal and screens for debris; clutch material there means internal wear the pack will not fix. Install the new pack, the sump filter and the spin-on filter, fit the new pan gasket, and fill with ATF+4 only. Clear codes and run the scan tool Quick Learn, which Chrysler requires after any solenoid pack replacement. If the valve body itself is worn, the 1999-2009 45RFE valve body is the next step, and a SK45RFE-A shift kit can go in at the same time.
| Fits | 45RFE 2002-2012 |
| 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.
Yes, as pictured it includes the solenoid pack, a sump filter, a spin-on cooler return filter and a pan gasket. ATF+4 is not included.
It can if a solenoid such as the multi-select or low/reverse solenoid is sticking or open. Check codes and meter the coils first; a worn reverse clutch or valve body problem will not be fixed by the pack.
Drop the pan and look at the 23-pin connector housing on the pack. The pack in this kit is the white six-solenoid style used from 2000 to 2009. If yours is gray, send us your year and VIN before ordering.
ATF+4 only. Check the level hot after the install, since a low level can set pressure switch codes that look like a pack failure.
Yes. Chrysler requires the Quick Learn procedure with a scan tool after replacing the solenoid pack so the computer resets its clutch fill values.
