Fitment: 2000-2002 2005-2008 Orion Bus Orion V 10.8L 1998-2004 Orion Bus Orion V 8.5L 2000-2001 Orion Bus Orion VI 8.5L Product Features: OE design to ensure exact fit, form and function for an easy drop-in installation Built with high density multi-Lowered fins for maximum cooling efficiency Every radiator is subjected to an aging and endurance test in order to validate its performance under extreme weather conditions. Engineered to stringent tolerances designed by Spectra's in house engineering team who have in-depth knowledge of the OE part it’s designed to replace .