ECCPP New Aluminum Radiator 2458 fits for 2002-2009 Chevrolet Trailblazer LT 2002-2009 GMC Envoy SLT If you don't make sure whether this item fits to you, message us Every radiator is subjected to an aging and endurance test in order to validate its performance under extreme weather conditions Aluminum Core Material,and plastic Tank Material Vehicle test-fitted prior to market release, ensuring perfect drop-in fit Plastic-aluminum radiators are brazed with the state-of-the-art Nocolok furnace process