Genuine Stromberg Carburetor Blank Off Plate. Want to keep a carb or two out of action? Slip this thin stainless plate between the carb and gasket. It's shaped to fit the later 1-1 base footprint you find on most '50's and '60's 2-bbl manifolds, but it's smaller so it all but disappears.
Will fit on your new or original Stromberg carburetor!