15-18 Dodge 6.7L Cummins Mishimoto Transmission Cooler

Fits: 2015-2018 Dodge 6.7L Cummins 

There’s no greater enemy for a transmission than heat. Whether your 2015-2018 RAM 6.7L Cummins is a dedicated tow vehicle, hardworking fleet truck, or a daily driver with a liking for the dragstrip, you need to ensure that your transmission runs cool. Luckily, Mishimoto has developed a direct-fit transmission cooler to do just that.

Our 2015-2018 RAM 6.7L Cummins transmission cooler utilizes a tube-and-fin core with internal fins to balance flow with efficient cooling. The more surface area, the more efficient the core can be. The fins also help move the fluid within the tube, ensuring more of it contacts the cooling surface. With a massive 112% greater core volume, 237% increase in fin area, and 226% increase in fluid capacity, this trans cooler is a huge improvement over the stock unit. To make even better use of that extra core volume, the Mishimoto transmission cooler utilizes fins within the tubes to not only add more cooling surface area, but also ensure more of the fluid contacts the tube, leading to better cooling efficiency. All these improvements make the Mishimoto transmission cooler the ideal replacement for your stock transmission cooler.

Like the stock cooler, the Mishimoto has a tube-and-fin construction, but inside the tubes of the cooler will be a unique feature to make even more use of the limited space. Most tube-and-fin coolers utilize empty tubes that allow the fluid to pass through without much interference. These standard tubes keep pressure drop at a minimum, but only the fluid in contact with the outer surface of the tube is adequately cooled. This cooler will utilize fins within the tubes to not only provide more cooling surface area but also to move the fluid throughout the tube. The larger tubes will keep pressure drop down, while the internal fins put more of the fluid in contact with the tube. These internal fins will help get the most cooling potential from the relatively small cooler.

Installation of the Mishimoto 2015-2018 RAM 6.7L Cummins transmission cooler requires no cutting or other modifications and includes all hardware needed for a fast and easy install. Like all Mishimoto products, this transmission cooler is backed up by our Lifetime Warranty with Accident Protection for worry free cooling as long as you own it. We’re confident the 2015-2018 RAM 6.7L Cummins transmission cooler will give the heart of your RAM the cooling it needs.

Mishimoto: MMTC-RAM-15SL