K&N Steel Base Crankcase Vent Filter 0.5in Vent OD x 2in OD x 1.5in HeightK&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 1110 crankcase vent filter has a chrome plated steel base and top with a mounting stud. The 5 8 inch diameter zinc tube is designed to push in and clamp directly on to metal or plastic tubing where venting is needed. This air filter constructed with non woven synthetic filter media it