45RFE Overhaul Kit 1999-05, new and ready to install. Fits the 45RFE. Ships fast from the USA.
If you are tearing down the four-speed 45RFE out of a 1999-2000 Grand Cherokee 4.7L, a 2002-2003 Liberty 3.7L, or a 2000-2002 Dakota or Durango, this is the sealing kit for the job. It is a Toledo Trans-Kit overhaul set, manufacturer number S87900P, and the box carries more than gaskets: it includes clutch pistons with bonded seals, the fiber gaskets and the solenoid body gasket. Buyers usually land here because the truck has started leaking, takes a few seconds to grab drive on a cold start, or slips harder every month.
The 45RFE shifts without bands. The input clutch housing carries the underdrive, overdrive and reverse clutches, while the 2-4 and low/reverse clutches apply from the case, and every gear change is one clutch filling while another exhausts. Each of those clutches is pushed by a piston, and each piston relies on a rubber lip or bonded seal to trap apply oil. The shaft sealing rings and case gaskets carry that oil between the pump, valve body and housings. Once heat hardens that rubber, apply oil bleeds away, the controller stretches its fill times to compensate, and eventually it cannot keep up. This kit replaces that whole sealing layer at once, and the included pistons mean a cracked or delaminated piston does not stall the rebuild.
Seals are not the only cause of a slow engagement on these trucks. Chrysler issued TSB 21-016-05 for Durangos that engaged late after sitting: fluid drained back out of the converter past the cooler return filter, and the fix was outside the transmission. Check that first. Then look at the pump. Our 45RFE pump failure guide covers low line pressure from worn pump gears or a worn regulator valve, both of which feel like a seal leak. If the pan shows heavy friction material, seals alone will not fix it; read the 45RFE 3-4 clutch failure guide and plan for clutches too.
The listing is built for 1999-2005 45RFE units, and the application list it ships against names the 1999-2000 Jeep Grand Cherokee 4.7L, 2002 to early 2003 Jeep Liberty 3.7L, 2000-2002 Dodge Dakota 4.7L, 2000-2002 Dodge Durango 4.7L and the 2002 Dodge Ram 1500 3.7L and 4.7L. Some 545RFE units share parts with these, but piston and seal designs changed during production, so this kit is not a blanket fit for every RFE. Lay each new piston beside the one you removed before you install it. If you own a 2003-2005 truck, or you are not sure whether you have the four-speed or the five-speed, send us the year and VIN and we will check it. Everything for this family is grouped on the 45RFE and 545RFE parts page.
| Fits | 45RFE 1999-05 |
| 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.
No. This is a sealing kit: piston seals, sealing rings, gaskets including the fiber and solenoid body gaskets, and clutch pistons. Friction and steel plates are sold separately or come in a master rebuild kit.
The kit's application list centers on 1999-2003 vehicles. Many later 45RFE units can use the same seals, but some pistons changed, so send us your year and VIN before ordering for a 2004 or 2005 vehicle.
On these trucks it can be converter drainback through the cooler return filter (Chrysler TSB 21-016-05), worn pump parts, or hardened clutch seals. Rule out the first two before buying seals.
ATF+4 only. An overhaul takes roughly 14 to 16 liters according to Chrysler, and the final level should be checked hot with the engine running.
Yes. The controller stores clutch fill data for the old parts. Chrysler's procedure lists seal and clutch replacement as reasons to run it, and skipping it leaves harsh or flared shifts until it relearns.
