Allstar 14 inch Diameter 5-1/8 inch Flange Plain Aluminum Carburetor Air Cleaner Kit with Offset Base and 1/2 inch Spacer features a carburetor air cleaner kit with offset base. It is designed for use with a 14 inch diameter air filter element. It is sold separately. The kit includes a top, bottom, 1/2 inch spacer with o-ring seal to keep contaminants out of the engine and is designed for a 5-1/8 inch carburetor flange. It is constructed from quality aluminum and features a plain finish. The offset base allows use with most hei style distributors. It is backed by a 90-day limited factory . It is sold as one kit (less filter element).