Elevate your truck's performance and efficiency with International LoneStar Transmission Coolers. This product lineup offers a wide range of high-quality coolers to keep your transmission running smoothly. Whether you're looking for a high-pressure 18 x 7 x 1.5-inch oil cooler or a direct-fit 2021064C1 unit, you'll find the right solution to maintain optimal transmission temperatures. Built to endure up to 300 degrees and 200 PSI, these coolers offer reliable protection for your truck, even in tough conditions. Upgrade with trusted brands like BESTfit and Eaton Fuller for long-lasting performance and smooth driving.