The Freightliner School Bus, FS-65, and Acterra 1999 through 2007 Copper and Brass Downflow Radiator is a reliable and durable option for your vehicle. With solder together construction and copper and brass construction materials, this radiator ensures long-lasting performance. It features a 29 5/8 inch core height, 24 1/4 inch core width, and 1 9/16 inch depth, providing efficient cooling. The radiator also includes a 4-row design, oil cooler with 7 plates, and 18 inch centers. It fits most Freightliner School Bus and FS-65 1999-2004 models with Mercedes or Cummins engines, as well as most Freightliner Acterra 2003-2007 models with the same engines.