65RFE Transmission Cooler 1999

This listing sits under the transmission cooler heading, but what you actually get is the service kit that keeps the cooler circuit clean: a primary pan filter, a pan gasket and the spin-on cooler return filter for the Chrysler RFE family. It is catalogued for the 45RFE, 545RFE, 65RFE, 66RFE and 68RFE from 1999 on, which covers Jeep Grand Cherokee and Liberty, Dodge Durango and Dakota, Ram pickups and the Mitsubishi Raider. If your truck is running hot while towing, shifting late after a long pull, or you are simply at the fluid-and-filter interval, this is the box you want. If you are chasing a leaking or plugged cooler core itself, read the Fitment section first.

What the filters do in an RFE transmission

RFE units filter fluid twice. The primary filter hangs off the valve body inside the pan and screens everything the pump pulls in. The second, a small spin-on filter, sits on the cooler return circuit, so the fluid coming back from the radiator cooler and auxiliary cooler gets cleaned before it heads to the lube passages. When that return filter loads up with clutch material, flow back from the cooler drops. Less flow through the cooler means hotter fluid, and the RFE family does not tolerate heat: GEARS Magazine puts the ideal maximum for these units at 200 degrees F, says fluid life roughly halves for every 20 degrees above that, and lists a minimum of one gallon per minute of cooler flow. A clogged return filter is one of the cheapest ways to fail that test.

Symptoms of a plugged filter or restricted cooler flow

• Transmission temperature climbing well past 200 degrees F while towing or idling in traffic
• Dark, burnt-smelling ATF+4 at the dipstick or drain
• Delayed engagement or a whine on a cold start as the pump starves through a loaded primary filter
• Late, soft shifts and torque converter clutch slip that get worse as the unit heats up, a pattern that matches the overheating and converter wear these trucks are known for
• Line pressure codes such as P0869 or P0933 after a heavy pull, which call for a pressure check before parts are thrown at the valve body

How to confirm before you buy

Read actual transmission temperature on a scan tool during a loaded drive rather than trusting the dash gauge. Pull the pan and look at what is in it: fine gray paste is normal wear, while chunks of friction lining or metal mean the filter change will not be the whole fix. If you have pressure codes, our 68RFE pump failure guide walks through the idle line pressure check, and the Ram 2500 Cummins common problems guide covers the overheating checklist in more detail.

Fitment

The listing covers 1999-up RFE units across Chrysler, Dodge, Jeep, Ram and Mitsubishi in 2WD and 4WD, and it references Chrysler numbers 5013470AC, 5013470AE, 5013470AA, 5013470AB, 4799507, 4799662 and 05179267AD. It is labeled as a 4WD kit, with a note that it also fits 2010-up 2WD trucks. Pan depth and filter pickup length vary between 2WD and 4WD RFE applications, so compare the filter part number on your old filter with the list above, or send us your year and VIN before ordering. This kit does not include a cooler core or cooler lines. For more RFE parts browse the 68RFE and RFE-family collection.

Install notes

• Drain the pan, remove the primary filter and its seal from the valve body, and make sure the old seal did not stay stuck in the bore.
• Remove the spin-on cooler return filter, wipe the sealing face, oil the new gasket with clean ATF and tighten it by hand. Do not use a filter wrench to snug it down.
• Clean the pan and magnet, fit the new gasket dry and torque the pan bolts evenly in a cross pattern.
• Refill with ATF+4 only. Chrysler's recall service instructions call for MS-9602-F fluid and at least 160 degrees F fluid temperature before the level is set, so check it hot with the engine running.
• Towing a lot? A deeper pan adds capacity and cooling. The 68RFE aluminum pan kit and the heavy-duty cast aluminum pan both fit the Cummins 68RFE.

If the pan shows heavy friction debris or the truck still runs hot with clean filters, the next suspects are the valve body and solenoids; our 68RFE valve body testing guide is the place to start.

Is this a transmission cooler?

No. Despite the listing name, this is the filter service kit for the cooler circuit: a primary pan filter, a pan gasket and the spin-on cooler return filter. It does not include a cooler core or lines.

Which transmissions does it fit?

It is catalogued for 1999-up 45RFE, 545RFE, 65RFE, 66RFE and 68RFE units in Chrysler, Dodge, Jeep, Ram and Mitsubishi vehicles. Match the part number on your old filter or send us your year and VIN, because 2WD and 4WD pans and filters differ.

What fluid should I use after the filter change?

ATF+4 (Chrysler MS-9602-F) only. Set the level with the engine running and the fluid at 160 degrees F or hotter, as Chrysler's service instructions specify.

How often should the cooler return filter be changed?

Change it every time you drop the pan and change the primary filter. On trucks that tow heavy or run hot, shorten the interval, since a loaded return filter cuts cooler flow and raises fluid temperature.

Will a new filter fix my overheating or slipping?

It fixes overheating caused by restricted flow. If the pan has chunks of friction material, the transmission throws pressure codes, or it still runs hot with clean filters, diagnose the pump, valve body and converter before assuming the job is done.

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