Mishimoto Transmission Cooler (Ram RHO)

This cooler works alongside your stock system to add serious cooling capacity right where you need it most. With a core volume that’s 60% larger than stock and 25% greater fluid capacity, it’s designed to handle the extra heat generated during demanding work and play. The tube-and-fin core maximizes cooling efficiency through superior heat transfer, helping reduce stress on your transmission by keeping fluid temperatures in the optimal range. Lower temps mean less wear, better performance, and a transmission that’s ready to go the distance.

Every component in this kit is engineered for a hassle-free installation and long-term reliability. Quick disconnect fittings make connections simple and the removable mounting bracket gives you easier access when attaching hard lines. You won’t need to remove the front grille, so installation is straightforward and won’t eat up your weekend. For extra protection against corrosion, the robust powder-coated finish stands up to whatever the road or trail throws at it. Designed, engineered, and tested right here in the USA, this cooler is compatible with both OEM and Mishimoto products for seamless integration.

Whether you’re towing for work, exploring off the beaten path, or simply want the peace of mind that comes with a cooler-running transmission, this upgrade delivers the efficiency and protection your Ram 1500 3.0L Hurricane deserves. Like all our products, it’s backed by the Mishimoto Lifetime Warranty.