Upgrade your semi-truck's cooling system with premium charge air coolers for International LT and RH models. These high-quality replacement parts optimize air intake temperatures, helping your engine run efficiently. Highlights include BESTfit's durable 37.125 x 21.625-inch charge air coolers with 2-inch cores for superior cooling performance. Whether you need a complete kit or just the core, these coolers are built to last and provide reliable results. These products are designed for a perfect fit and help maintain peak engine performance and maximize fuel economy.