45RFE Master Rebuild Kit, new and ready to install. Fits the 45RFE. Ships fast from the USA.
If your 45RFE or 545RFE is coming out of a Ram 1500, Dakota, Durango, Grand Cherokee, Commander or Liberty with slipping gears, burnt fluid or a limp mode that keeps coming back, this is the package for a rebuild where you want the wear parts and the electronics new at the same time. It goes beyond a standard master kit: along with the overhaul gaskets and seals, frictions, steels and pistons, it includes a main filter, a spin-on filter, a Mopar solenoid pack with the white connector and a pressure transducer. One order covers the hard-wearing parts and the components behind most RFE line pressure complaints.
The 45RFE family is a clutch-to-clutch automatic. The input clutch assembly holds the underdrive, overdrive and reverse clutches, and the 2C, 4C and low/reverse clutches hold members of the gearsets; every shift is one clutch releasing as another applies under computer control. That makes the unit sensitive to worn frictions, leaking seals and pressure control faults all at once. The solenoid pack and line pressure sensor run a closed loop: the computer commands pressure through the pressure control solenoid and checks it with the transducer. Replacing the frictions, steels and seals while keeping a tired solenoid pack or transducer is how a fresh rebuild ends up back in limp mode.
Check fluid level and condition and pull codes first. Line pressure faults can be electrical or valve body wear rather than worn clutches; our 45RFE pressure control solenoid and line pressure guide explains how to compare desired and actual pressure before you commit. If the pan shows heavy friction material, or the unit slips in more than one range, a rebuild is the honest fix, and the 45RFE rebuild cost guide shows what the job involves.
This package is built for 45RFE, 545RFE and 65RFE rebuilds. Those transmissions changed over the years: Gears Magazine notes that the 45RFE valve body started with a black solenoid connector, switched to white, and changed again in 2009 when the overdrive solenoid was eliminated. Filter depth also differs between 2WD and 4WD pans. Confirm your transmission code, your solenoid connector color and whether the truck is 2WD or 4WD, and send us the year, engine and VIN before ordering so we can verify the filter and solenoid pack. More parts for this family are on our 45RFE parts page.
Inspect the pump, input clutch retainer, drums and bushings before reassembly; worn hard parts will burn new frictions. Check the 4C return spring retaining ring, which Transmission Digest reports coming unseated on RFE units. Soak frictions in ATF+4, set every clutch clearance and input shaft end play to specification, and torque the valve body and pan bolts correctly. Fill with ATF+4 only; Chrysler lists an overhaul fill of 14 to 16 liters depending on cooler and line size. After installation, run the Quick Learn procedure with a capable scan tool so the computer relearns clutch volumes. If the pump gears are scored, add the 45RFE pump, and the billet accumulator piston kit replaces worn accumulator pistons in the same valve body service.
| Fits | 45RFE |
| Part type | Master Rebuild Kit |
| Condition | New |
| 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.
A basic master kit covers seals, gaskets, frictions and sometimes steels and a filter. This package adds pistons, a second (spin-on) filter, a Mopar solenoid pack with the white connector and a line pressure transducer, so the main electronic pressure control parts are new along with the clutches.
It is built for 45RFE, 545RFE and 65RFE rebuilds, but parts changed by year. Verify your solenoid connector color, your 2WD or 4WD filter depth and your transmission code, and send us your year, engine and VIN to confirm.
The main sump filter depth differs between 2WD and 4WD pans. Tell us your drivetrain and VIN when ordering so the correct filter is packed.
Yes. Run the Quick Learn procedure with a scan tool that supports it after installation and before road testing. It lets the computer learn the clutch volumes of the rebuilt unit.
ATF+4 only. Chrysler lists an overhaul fill of about 14 to 16 liters depending on cooler and line size, so add fluid gradually and check the level hot.
