45RFE Transmission Cooler 1999, new and ready to install. Fits the 45RFE. Ships fast from the USA.
One thing to know up front: the product is filed under transmission coolers, but there is no cooler core in the box. It is the filter service kit for the cooler circuit and the sump of a Chrysler 45RFE, built around a four-wheel-drive style pan filter, the small spin-on cooler return filter and a pan gasket. It is listed for 1999 and later 45RFE and 545RFE units, and the same parts are catalogued across the 65RFE, 66RFE and 68RFE. On the 45RFE side that means the Jeep Grand Cherokee, Commander and Liberty, the Dodge Durango and Dakota, and the Ram 1500. People usually find it while chasing a slow first engagement in the morning, rising transmission temperature on a tow, or simply a 45RFE that has never had its pan dropped.
The 45RFE cleans its fluid in two places. Inside the pan, the primary filter clips into the valve body and is the only screen between the pump and whatever the clutches have shed. The spin-on filter sits outside on the cooler return path, so ATF coming back from the radiator cooler is cleaned before it is sent to the lube circuit and the converter. Because the spin-on filter is in the converter's return path, its internal check matters as much as its filter media. Chrysler found that one version of it could let the converter drain down overnight, which is why the suffix printed on that filter is worth checking (see Fitment).
Check the level hot first, then read live transmission temperature on a scan tool during a loaded drive. If the only complaint is the morning delay, Chrysler service bulletin 21-016-05 (as reprinted by Underhood Service) applies to 45RFE and 545RFE units under sales codes DG4 and DGQ and blames cooler return filter 04799662AB for letting fluid drain out of the converter. When you drop the pan, read the debris: fine sludge is normal, but chunks of lining or bright metal mean the pump or a clutch pack is failing and filters alone will not fix it. Our 45RFE pump failure guide walks through those signs and the line pressure numbers to compare against.
The kit is listed for 1999 and up 45RFE, 545RFE, 65RFE, 66RFE and 68RFE automatics in Chrysler, Dodge, Jeep, Ram and Mitsubishi vehicles. It cross-references Mopar filter numbers 5013470AA, AB, AC and AE, 4799507, 4799662 and 5179267AC/AD. Two cautions. First, the pan filter is the four-wheel-drive style; the listing notes it also fits two-wheel-drive trucks from 2010 on, so an earlier 4x2 truck should compare the old filter's pickup before installing. Second, not every early 45RFE carries a spin-on cooler return filter, so look for one on your case before counting on that part. If you have the DG4/DGQ delayed engagement complaint, confirm the spin-on filter you install is not the AB level. Send us your year and VIN if anything is unclear. Every part we carry for this family is on the 45RFE/545RFE collection page.
| Fits | 45RFE 1999 |
| Part type | Transmission Cooler |
| 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. It is a filter service kit: a 4WD style pan filter, a spin-on cooler return filter and a pan gasket. It keeps the cooler circuit clean but does not replace the cooler core or the lines.
It can, if the cause is the cooler return filter. Chrysler bulletin 21-016-05 ties that complaint on DG4 and DGQ units to filter 04799662AB draining the converter. Check that the replacement spin-on filter is not the AB level.
The pan filter is the 4WD style and is listed as also fitting 2WD trucks from 2010 on. For an earlier 4x2 truck, compare the pickup on your old filter or send us the VIN first.
ATF+4 only. Chrysler lists a 5.2 L service fill for a 4x2 45RFE or 545RFE and 6.2 L for 4x4. Add that, start the engine, and set the final level with the fluid hot.
The listing lists the filters and the pan gasket. If you also need speed sensors or a solenoid pack, order them separately or contact us to confirm what ships in the box.
