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The Mishimoto direct-fit transmission cooler for 2019+ RAM with the 6.7L Cummins engine uses a tube-and-fin core with internal fins, adding a thicker core and additional fin rows to improve cooling while reducing restriction compared to the stock unit. The enlarged core and internal finning increase fluid contact area for better heat transfer, and the unit installs without cutting or major modifications.
Mishimoto 2019+ Ram 6.7L Cummins Transmission Cooler
