42RLE Solenoid Kit, new and ready to install. Fits the 42RLE. Ships fast from the USA.
If your Jeep Liberty, Dodge Nitro or Dakota with the 3.7L V6 has started leaving every stop in second gear, never shifts into fourth, and shows a solenoid or pressure switch code, the 42RLE solenoid block is the first part most shops look at. This kit is built around the block sold under Mopar numbers 52854001AA and 04799061AB, and it is listed with a new pan filter and pan gasket so the whole pan-down job is covered in one order. The product photos also show an input and an output speed sensor laid out with the block.
The 42RLE is the rear-drive cousin of the front-drive 41TE, and it shifts the same way: no bands, just one clutch releasing while the next one applies. The solenoid block sits on the valve body inside the pan. Its solenoids route oil to the underdrive, overdrive, 2-4 and low/reverse clutches, and its pressure switches tell the transmission controller whether each circuit really pressurized. The controller cross-checks those switches against input and output shaft speed. When a solenoid stops responding or a switch reports the wrong state, the controller cannot prove which gear it is in, so it sets a code and locks the transmission in second until the fault is repaired.
Pull every stored code before you order anything. An electrical solenoid code can come from the harness and case connector just as easily as the block; Chrysler covered moisture and corrosion inside the 42RLE solenoid pack connector in TSB 21-009-05, so unplug it and look at the pins first. Then check the ATF. Dark, burnt fluid with clutch material in the pan and high clutch volume index readings mean the clutches are worn, and a new block will not fix that. Our Ultradrive limp mode and CVI guide shows how to read those numbers and how solenoid switch valve bore wear can set codes that look like a bad block. If the real complaint is a flare or slip under throttle, start with our 41TE slipping-under-load guide instead.
This block is listed as interchanging with 52854001AA and 04799061AB for 42RLE-equipped Jeep, Dodge, Chrysler and Mitsubishi models. The application list centers on the 3.7L V6 Jeep Liberty through 2012 and the Dodge Nitro and Dakota with the 3.7L and the 4-speed automatic. The 42RLE was also used in the Wrangler, Ram 1500 V6 and Chrysler 300 V6, but this block was revised several times and later units added variable line pressure hardware, so do not order by vehicle name alone. Match the number on your old block and the shape of its connector, or send us your year and VIN and we will check it. Vehicles with the 45RFE or 545RFE use a completely different solenoid pack. Every 41TE-family part we carry is on our 41TE and 42RLE collection page.
The block is internal on the 42RLE. Drain the fluid, drop the pan, pull the filter and unplug the case connector, then lower the valve body enough to reach the block screws. Keep the valve body level so the check balls stay put. Clean the mating surface, fit the new block with its seal, and tighten the screws evenly to factory torque; the valve body is aluminum and strips easily. Install the new filter with its seal fully seated and set the new pan gasket. Refill with ATF+4 only, check the level hot in neutral, clear codes, and run the Quick Learn with a scan tool before a road test through every gear. If your old filter looks fine and you only need gaskets later, the 42RLE filter and pan gasket kit is sold separately, and if the pan showed clutch debris, the 42RLE master rebuild kit is the honest next step.
| Fits | 42RLE |
| Part type | Solenoid 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.
Yes, it is listed as a replacement for both of those Mopar numbers. Read the number on your old block before ordering, because the 42RLE block changed over the production run.
The 3.7L Liberty with the 42RLE is the core application for this kit. Send us your year and VIN if you want us to double-check the block revision before it ships.
Yes. Unlike the 41TE, where the pack bolts to the outside of the case, the 42RLE block mounts to the valve body inside the pan. That is why the kit includes a filter and pan gasket.
ATF+4. The controller's shift timing and clutch learning are calibrated around it, and a generic multi-vehicle ATF can change how the clutches apply.
Yes. Clear the codes and run the Quick Learn so the controller relearns clutch fill times with the new block. Without it the first shifts can be harsh or soft.
