545RFE Governor Pressure Solenoid 2004, remanufactured and ready to install. Fits the 545RFE. Ships fast from the USA.
If your 2004 Ram 1500, Durango or Jeep Grand Cherokee with the five-speed 545RFE is stuck in limp mode, shifting erratically, or storing solenoid and pressure switch codes, you may have seen this part called a governor pressure solenoid. The 545RFE never had one. The component that controls every shift in this transmission is the solenoid block, and that is what you get here: a remanufactured genuine Mopar block, manufacturer part number 52119435AF, interchange D72420B, with the white 23-pin connector.
Chrysler's older RE transmissions timed shifts with a hydraulic governor and mechanical shift valves. Sonnax points out that the RFE family dropped both: the transmission computer decides every shift and carries it out by energizing solenoids in this block. In the 545RFE that job is bigger than in the four-speed 45RFE because the computer is managing five forward ratios with the same set of clutches, so each solenoid is switching more often and clutch timing has less margin. The block also carries the variable force solenoid that sets line pressure and the pressure switches the controller uses to verify that a clutch circuit actually applied. When one of those switches or coils goes bad, the computer usually protects the transmission by falling back to a fixed gear.
A 545RFE that drops into limp mode can have a dozen causes, from low fluid to a worn pump. Verify ATF+4 level hot, then inspect the case connector for fluid wicking into the pins and check coil resistance at the pass-through. If pressure readings are the main complaint, compare the scan tool line pressure with a mechanical gauge as our pressure control solenoid and line pressure guide describes. Our overview of common 45RFE and 545RFE problems covers the faults that mimic a bad block, including valve body wear and clutch damage.
This listing is for the 2004 545RFE. Transmission Digest notes that the white-connector pack was shared by the 45RFE, 545RFE and early 68RFE, and Sonnax confirms the white connector covered 2000 through 2009 production and can be used to service later trucks, while the 2010-on gray-connector pack has one fewer solenoid and will not work in a 2004. The source listing calls out 45RFE and 545RFE applications from 2004 on. Because 2004 vehicles could have either the 45RFE or 545RFE depending on engine, confirm which transmission you have; the four-speed version is listed as the 2004 45RFE solenoid pack. Match the connector color and the label on your old block, or send us the year and VIN for a check. Browse the rest of the lineup on the 45RFE and 545RFE parts page.
| Fits | 545RFE 2004 |
| Part type | Governor Pressure Solenoid |
| Condition | Remanufactured |
| Brand | Mopar |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. The 545RFE has no governor or governor pressure solenoid; those were used on the older RE transmissions. This is the solenoid block that controls shifting and line pressure in the 545RFE, Mopar part number 52119435AF.
No. The 2010-on gray-connector pack has one fewer solenoid and cannot back-service a white-connector transmission. A 2004 needs the white-connector block shown here.
It depends on the engine and build. Check the transmission identification or send us your VIN. The four-speed 45RFE version has its own listing.
Replace the primary filter and the spin-on cooler return filter, use fresh ATF+4, and inspect the case connector and its seal. If the input or output speed sensors are original, consider them too.
Yes. After installation, clear codes and run the Quick Learn procedure with a compatible scan tool so the controller relearns clutch volumes.
