K&N crankcase vent filters are perfect for racing applications, vintage cars or individuals who want to add some aesthetics to their classic carbureted engine. This crankcase vent filter has a K&N embossed chrome top with a rubber base. The 1-1/4 inch diameter rubber flange is designed to push directly into the valve cover where venting is needed. Constructed with a synthetic filter media, it can be cleaned and reused.