Every kit is different based on parts availability. We try and provide Flange and Intake Gasket with most kits. Sometimes we can find the OEM gasket and sometimes we need to reverse engineer a gasket for the application. The reason we try and provide these additional gaskets is for one stop shopping. If we don’t provide, customer would need to make their own, use their old one or try and find from a dealer that handles the brand of equipment carburetor is used on.