K&N 1.5in Flange ID x 3in OD x 2.5in H Rubber Base Crankcase Vent FilterK&N crankcase vent filters are perfect for racing applications, vintage cars or individuals who want to add some aesthetics to their classic carbureted engine. The 62 1450 crankcase vent filter has a K&N embossed rubber top with a rubber base. The 1 1 2 inch diameter rubber flange is designed to push on and clamp directly on to metal or plastic tubing where venting is needed. Constructed with a non woven synthetic filter media it can be cleaned and