45RFE 545RFE 68RFE Input Output Speed & Pressure Sensor Kit

This is the full three-sensor set that the 45RFE, 545RFE, and 68RFE automatics rely on to read shaft speed and line pressure: one input (turbine) speed sensor, one output speed sensor, and the governor pressure sensor (transducer) that mounts on the valve body. It covers 1999-and-up Dodge, Chrysler, and Jeep applications running those units, including the 68RFE behind the 6.7L Cummins in Ram 2500 and 3500 trucks and the 45RFE/545RFE in Grand Cherokee, Durango, Dakota, and Liberty.

When one of these sensors drifts or fails the symptoms are familiar: harsh or erratic shifts, the transmission dropping into limp mode, a dead speedometer, or gears that stay wrong after a full stop. The input and output speed sensors set speed-signal faults such as P0715 and P0720, and the pressure sensor is the usual suspect behind pressure-related shift and governor codes. Because all three sit in the same hot, fluid-soaked environment and age together, most techs replace the set as a unit rather than chase one at a time.

The speed sensors thread into the case and the governor sensor sits under the pan on the valve body, so a filter and pan gasket service is the right time to do this job. Cross-references include 4799061AB, 4799758AD, 5016222AA, 72436, 72438, 72415, and 213-3214. Check your specific year and unit against those numbers before installing, and clear the codes with a scan tool afterward so the module relearns.