Mishimoto MMTC-RAM-15SL Transmission Cooler, Compatible with Dodge Ram Cummins 6.7L, 2015-2018

Compatible with 2015–2018 RAM 6.7L Cummins, the Mishimoto MMTC‑RAM‑15SL transmission cooler is engineered to manage the extreme heat generated during towing, hauling, and heavy-duty driving. This direct-fit upgrade dramatically reduces transmission fluid temperatures, promoting smoother shifts and protecting the drivetrain under load. Featuring a tube‑and‑fin core with internal fins, it offers a 112% increase in core volume, 237% more fin surface, and 226% greater fluid capacity than stock. These enhancements improve heat dissipation and fluid stability in the most demanding conditions. Constructed from precision CNC‑machined aluminium and finished with a durable powder coat, the cooler resists corrosion, thermal cycling, and road exposure. High‑quality welding ensures long‑term structural integrity. The kit includes all necessary fittings and mounting hardware, allowing straightforward installation with no cutting, trimming, or extra parts required. Its tube‑and‑fin layout ensures balanced flow and efficient cooling performance. As towing demands continue to rise, transmission overheating remains a key concern for truck owners. This cooler addresses that challenge with robust construction and proven performance. Since 2005, Mishimoto has engineered performance cooling solutions tested for reliability. This transmission cooler continues that tradition, delivering dependable heat management and lasting confidence on every haul.