Steel shim heat shield gasket

This metal heat shield should be combined with a base gasket on some models with exhaust gases under the carburetor to avoid "burn thru". Steel heat shield goes directly under carburetor and above 'composition' base gasket. 1968-69 Buick 1965-1969 Chevrolet Matches our FL581 base gasket. This heat shield does not work with FL596 or FL598.