The Freightliner And Sterling FL Series, FS65, And Acterra Q Charge Air Cooler is a highly practical and efficient product. With a 25-inch core height, 27 1/4-inch core width, and 1 5/8-inch depth, it fits most Freightliner FL Series and FS65 models, as well as most Sterling Acterra Q models. This charge air cooler is sold individually and offers a 3 1/2-inch inlet and outlet. It is compatible with various OEM and aftermarket numbers, ensuring a perfect fit for your vehicle. With its reliable performance and wide compatibility, this charge air cooler is a must-have for any Freightliner or Sterling owner.