Allstar ALL26092 14" Diameter 5-1/8" Flange Plain Aluminum Carburetor Air Cleaner Bottom Carburetor air cleaner bottom has a 14 inch diameter with a 5-1/8 inch carburetor flange for a 4bbl carb Note: this design will not allow the use of hei style distributors Constructed from quality aluminum This is a bottom only. Top and filter element sold separately Sold each