68RFE Transmission Cooler 2019-2014, used and ready to install. Fits the 68RFE. Ships fast from the USA.
If your Ram 2500 or 3500 with the 6.7L Cummins and 68RFE is weeping red fluid at the front of the truck, losing ATF between checks, or showing a climbing transmission temperature every time you hook up a trailer, the transmission oil cooler is high on the list of suspects. This listing is a used, factory Mopar transmission oil cooler carrying part number 68322494AD. It is an aluminum, bolt-on unit, and the listing describes it as leak tested, with no drilling or modification needed to mount it. Because it is a genuine factory part rather than a universal cooler, the line fittings and mounting points are the ones the truck was built with.
The 68RFE is a six-speed automatic built to live behind the torque of the Cummins, and most of its heat comes from the torque converter and from clutch packs working under load. Hot fluid leaves the case, runs forward through the cooler, and returns to feed lubrication to the planetary sets and bushings. If that loop loses capacity, fluid temperature climbs fast. GEARS Magazine, the ATRA trade journal, puts the ideal maximum transmission temperature at 200 degrees F and explains that every 20 degrees above that cuts expected transmission life in half, so a truck running 240 degrees has roughly a quarter of its normal life left. The same article lists a plugged cooler and plugged cooler lines among the top causes of an overheating 68RFE.
Clean the front of the truck and find the highest wet point first; a loose line fitting or a leaking hose can drip onto the cooler and make it look guilty. If nothing leaks but the truck runs hot, check flow. GEARS describes disconnecting the return line into a bucket or using a flow meter and looking for at least a gallon per minute. Good flow and high temperatures point elsewhere, such as an overloaded truck, an engine cooling or fan clutch fault, or internal wear. Weak flow with clear lines points at the cooler. If you are also chasing slipping or odd shifts, read our 68RFE Ram 2500 Cummins common problems guide, and if line pressure is low on a scan tool, see the 68RFE pump failure guide before replacing parts.
The listing title reads 2014-2019 Ram 2500/3500 with the 68RFE. Be aware that the official Mopar catalog lists part number 68322494AD for 2019 and newer Ram 2500 and 3500 trucks, and it supersedes the earlier 68322494AA, AB and AC numbers. That means a 2019 truck is the safe match, while a 2014-2018 owner should not assume it fits. Compare the part number on your existing cooler, or send us your year and VIN and we will confirm before it ships. Trucks with the high-output Cummins use the Aisin transmission instead of the 68RFE and are a different setup. Browse every part we carry for this transmission on the 68RFE collection page.
Drain or catch fluid before you open the lines, cap them while the cooler is out, and inspect every O-ring and quick-connect fitting at the cooler; reuse a hardened seal and you will be chasing a new leak. If the old cooler failed internally or the fluid is burnt, flush the lines and clean the pan and filter before the new cooler sees fluid, because debris left in the circuit goes straight into the new core. Refill with ATF+4 only. The FCA dealer instructions for this transmission family call for ATF+4 to the MS-9602 standard and require the fluid to be at least 160 degrees F before setting the level. If the transmission is already slipping, a cooler alone will not bring the clutches back; a 2019 truck may also need the 2019 68RFE solenoid kit, and a worn unit is a candidate for the 68RFE overhaul kit or a new 68RFE pump.
| Fits | 68RFE 2019-2014 |
| Part type | Transmission Cooler |
| Condition | Used |
| Brand | Mopar |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Possibly not. The part number on this cooler, 68322494AD, is catalogued by Mopar for 2019 and newer Ram 2500 and 3500. Check the number stamped or labeled on your current cooler, or send us your year and VIN and we will confirm before shipping.
It is a used factory Mopar cooler. The listing describes it as leak tested and ready to bolt on with no drilling or modification.
ATF+4 only. Top off after the first start and set the level with the fluid at 160 degrees F or higher, as the factory procedure requires.
GEARS Magazine puts the ideal maximum at 200 degrees F. Every 20 degrees above that roughly halves expected transmission life, so sustained readings in the 230 to 250 range while towing need attention.
Yes, if the old cooler leaked internally, the fluid is burnt, or the transmission has shed clutch material. Debris left in the lines will go straight into the new core and restrict flow.
This listing is for 68RFE trucks. High-output Cummins trucks use the Aisin automatic, so confirm by part number or VIN before ordering.
