Upgrading a transmission cooler on a 2024+ Toyota Tacoma might not be the first modification off-roaders think of, but for anyone towing trailers, tackling rugged trails, or running their truck hard, heat is the silent threat that can compromise performance and reliability. Automatic transmissions generate a lot of heat under stress, and while the stock liquid-to-liquid coolers in the Tacoma’s radiator and fan shroud do a reasonable job, they have their limits when the load increases or conditions become extreme. That’s where a dedicated, high-capacity transmission cooler comes in, offering a way to manage temperatures more effectively and reduce stress on the truck’s entire cooling system.