45RFE Overhaul Kit 1999-2005, new and ready to install. Fits the 45RFE. Ships fast from the USA.
A 45RFE that has started weeping fluid, hesitates before it grabs Drive on a cold morning, or flares between gears on a highway pull is usually telling you the rubber inside it is done. This new overhaul kit is built for a full teardown of the four-speed 45RFE from 1999 through 2005, the unit found behind the 4.7L in early Grand Cherokees, Dakotas and Durangos and behind the 3.7L and 4.7L in the Liberty and Ram 1500. Unlike a bare gasket set, this one ships with clutch pistons, so a hardened or cracked piston seal does not hold up the rebuild once the case is apart.
The 45RFE has no bands and no hydraulic shift valves. Every gear is a clutch pack applied by a computer-controlled solenoid, and every clutch is squeezed by a piston that only works if its seal holds oil. The sealing rings on the shafts carry that same oil from the pump and valve body into the rotating input clutch housing. When those rings and lip seals wear, apply oil leaks past them, the controller adds fill time to compensate, and the shifts get slower and softer until a clutch finally slips and burns. The kit covers that whole layer in one box: the overhaul gasket and seal set, pistons, the fiber gaskets and the solenoid body gasket that seals the pack to the valve body.
A seal kit fixes sealing problems only, so rule out the other parts that mimic them. Check the hot ATF+4 level first. A low-pressure complaint can come from the pump instead of the clutches; ATSG has written about 45/545RFE pumps losing line pressure through loose spacer plate screws, and our 45RFE pump failure guide covers how to tell the difference. If the scan tool shows desired and actual line pressure far apart, read the pressure control solenoid and line pressure guide before tearing in. Heavy friction material in the pan means clutches are also needed, which the 45RFE and 545RFE problems overview walks through.
The application list on this kit names the 1999-2000 Jeep Grand Cherokee 4.7L, the 2002 to early 2003 Jeep Liberty 3.7L, the 2000-2002 Dodge Dakota and Durango 4.7L and the 2002 Ram 1500 with the 3.7L or 4.7L. It is a 45RFE kit. Some parts are shared with the five-speed 545RFE, but do not assume this box covers one; read the tag on the transmission case before ordering. The 45RFE was updated several times during its run, so if your truck is a 2003-2005 build outside the list above, send us your year and VIN and we will confirm the kit before it ships. Contents can vary slightly by production batch but are equivalent in function. Everything else for this unit is on the 45RFE and 545RFE parts page, and a second 1999-05 45RFE overhaul kit is listed if you want to compare contents.
If the valve body bores are worn as well, a remanufactured 45RFE valve body keeps new seals from being blamed for an old hydraulic leak.
| Fits | 45RFE 1999-2005 |
| Part type | Overhaul 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.
It is an overhaul kit: gaskets, seals, sealing rings, fiber gaskets, the solenoid body gasket and clutch pistons. Plan on buying frictions, steels and a filter separately if your clutches are worn.
Do not assume it will. This kit is listed for the four-speed 45RFE. The five-speed 545RFE shares some parts, but the application list here is 45RFE only, so check the transmission tag before ordering or send us your VIN.
The 1999-2000 Grand Cherokee 4.7L, 2002 to early 2003 Liberty 3.7L, 2000-2002 Dakota and Durango 4.7L and 2002 Ram 1500 3.7L or 4.7L. For other 2003-2005 builds, send us your year and VIN and we will confirm.
ATF+4 only. Chrysler lists an overhaul fill of about 14 to 16 liters. Check the level with the engine running and the fluid at operating temperature.
Yes. Run the Quick Learn procedure with a scan tool that supports it, then road test so the controller can adapt clutch fill times to the fresh seals.
