The Mack RW, MH, and CL 1989 and newer charge air cooler is a reliable and practical product designed to fit most Mack models with E6, E7, and E9 engines. With a core height of 27 7/8 inches, core width of 25 1/4 inches, and a depth of 2 1/4 inches, this charge air cooler offers excellent performance. It features a 4-inch inlet and outlet, ensuring efficient airflow. Sold individually, this charge air cooler is a perfect replacement option. With various OEM and aftermarket numbers, it guarantees compatibility and ease of installation. Trust this charge air cooler for optimal cooling and engine performance.