Spectre's Air Cleaner Base Plates are designed for use with carburetors and throttle body injection assemblies with a 5-1/8 inch mounting flange and 14 inch air cleaner assemblies. This flat base plate has a 14 inch outside diameter and places the filter base 5/8 inch above the carburetor, intended for applications where drop bases won't fit. Manufactured from high quality steel, this product features a zinc-plated finish that resists corrosion.