Ram’s twin-turbo 3.0L Hurricane inline-six is a powerhouse—but towing, hauling and off-roading push transmission temps beyond what the factory cooler can handle. Mishimoto’s direct-fit transmission cooler solves that problem with a tube-and-fin core boasting 60% more volume and 25% greater fluid capacity than stock.
That extra capacity is backed by real testing. Selecting the right internal fin configuration was critical to maximizing performance, and during bench testing, Mishimoto’s internal fin design outperformed the stock cooler by an average of 4%, keeping the 8HP75 transmission in its optimal temperature range under the heaviest loads. Installation was thoughtfully engineered—no front grille removal required, quick-disconnect fittings and a removable mounting bracket make it a straightforward job that won’t tie up rack space in the shop.
Whether your customers are pulling a trailer up a mountain, navigating technical trails or just cruising, this transmission cooler is a worthwhile investment that delivers cooler fluid temps and reduces drivetrain wear. Designed, engineered, and tested in the USA on a 2025 Ram 1500 RHO and backed by Mishimoto’s Lifetime Warranty.
To learn more about Mishimoto’s direct-fit transmission cooler for RAM 1500, click here.