Very popular with original equipment manufacturers for use on their towing applications, our Plate and Fin coolers is no exception, featuring strong furnace-brazed construction, 1 1/4 wide plates and embossed turbulators which maximize heat transfer while also minimizing pressure drop. This unit is perfect for light to medium duty use and occasional towing. It greatly extends transmission life by preventing heat-related transmission failures, and improve shifting performance. Built with 1/2 NPT female cooler ports. This kit comes with a complete transmission cooler hardware kit to easily install onto vehicles with 5/16 transmission cooler lines.