DeWitts - C6 Corvette Direct Fit®Complete aluminum radiator assembly with no plastic end tanks or rubber gaskets Two core radiator design with dual 1 inch wide core tubes for maximum cooling Press formed end tanks fully welded to core with no gaskets or epoxy construction 1. 38 inch factory sized cooling hose inlet and outlet connections to use stock hoses Direct Fit upgrade means just that, with no modifications needed to your Corvette Radiators are 100 percent manufactured in the