Image of the Mishimoto Performance Transmission Cooler for the 2019+ RAM 6.7L Cummins installed.

Long Haul – Performance Transmission Cooler for 2019+ RAM 6.7L Cummins

May 08, 2024
RAM, 2019+ RAM Transmission Cooler
Josh Wayman

Picture yourself on the shoulder of the highway. You noticed the gears slipping a few miles back but decided to ignore it because you were only a few miles from home. Those slipping gears turned into violent lurches, and before you knew it, your 2019+ RAM 6.7L Cummins was sporting a Christmas tree dashboard and that dreaded burnt smell. Your transmission is toast.

But it didn’t have to be this wayβ€”if you had the Mishimoto Performance Transmission Cooler, you’d have made it home.

A side-by-side image comparing the Mishimoto Transmission Cooler and stock.
FIgure 1. A side-by-side comparison of the Mishimoto Transmission Cooler and stock.

Our new transmission cooler for the 2019+ RAM 6.7L Cummins is a direct-fit application that offers improved cooling capabilities and seamless integration into your truck’s transmission system. Our cooler’s core is 64% thicker than stock and uses three additional rows of fins for peak efficiency. To maximize the cooling potential of the enlarged core, our engineers decided to use high-efficiency internal fins that add more cooling

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