🔥 Mishimoto MMTC-RAM-03SL Automatic Transmission Oil Cooler for Dodge Ram Cummins 2500/3500 5.9L/6.7L 2003-2009: Enhance Performance and Durability Review

This is an expensive replacement but was purchased for its higher capacity and ease of installation. I'm concerned about the connection points of the hose to the heat exchanger. They appear to be plastic and when I first installed the hose and tightened the clamp, the hose rotated on the fitting as the hoses moved into position. Not very comforting. Drawn a few times. I would suggest a stronger braided hose assembly with heavier threaded fittings.

I was having trouble with my 2006 Cummins transmission getting hot while towing a 30 foot trailer uphill. This reduced the temperature on the same street by almost 30 degrees. No more extreme CTS screaming at me that shemale is hot. It's expensive but did exactly what was advertised and installed me in about 2 hours (a couple of cold ones to be sure). Oh, and I've got the thermostat bypass turned on, btw not sure what temp will be running with the thermostat on.

This is a Dodge Ram powertrain savior. Messiah the cooler for your 04.5-07 2500s. The gearbox slips at temperatures above 220°, does not pull any weight. I installed this cooler and towed a 36ft 10000lb (not 5th wheel) drawbar trailer and the temp never went above 210° even driving uphill through the Techachapi Mountains in California. Easy to install in about an hour with basic tools. I would highly recommend it to anyone, the Dodge Trans has all the cooling issues.

I wasn't thrilled with the price (it was $200 more than the flagship product)... BUT I can say it does an incredible job of keeping the transmission cool. towed my fully loaded closed trailer (12,000 pounds) 3,200 miles across the country. My transmission stayed cold the entire ride, which is impressive for a 48RE with over 250,000 miles on it. Installation is not for beginners or those without mechanical skills (you will have to remove the intercooler and other parts).

I don't usually write reviews but this cooler deserves one. I have an 06 3500 drw cummins with just under 1200 tq. I recently wrecked my factory transmission due to a long hike up a mountain that pushed my temp into the 220 mark. Then they continued to climb. I decided to make my truck automatic since my wife uses it sometimes, so I completely rebuilt it. The servo switch kit's billet drum increased clutch performance and the low-stall billet torque converter. After reinstalling the…

I bought this transmission cooler for my 2003 Ram 3500 with two Cummins 5.9 engines. I'm upgrading this truck and outfitting it to tow a 14K semi-trailer on the west side of the mountain. I recently had a 48RE transmission rebuilt and wanted to protect it as much as possible from the heat of towing a heavy load. First, the Mishimoto transcooler looks very high quality, especially compared to the factory unit. It arrived in perfect condition. I unpacked it from a sturdy box with the device…