The Freightliner FLB, FLL, Classic XL, FLD120, FLD112, FLD132, and Classic 120 Heater Core is a reliable and practical solution for your Freightliner truck. With its 12-inch length, 6.3125-inch height, and 1.875-inch depth, this heater core offers efficient heating performance. It features a 1.875-inch thickness and 3/4-inch inlet and outlet, ensuring a proper fit. Designed to fit most Freightliner FLB, FLL, Classic XL, FLD120, FLD112, FLD132, and Classic 120 models, this heater core is a perfect replacement. It is sold individually and comes with OEM and aftermarket numbers for easy identification.