This K&N crankcase vent filter is a clamp-on vent element intended for racing applications, vintage cars and carbureted engines seeking an aesthetic and reusable solution. It has a chrome top and base, non-woven synthetic washable media, and a 5/16" flange that clamps to metal or plastic tubing. Note: in California this type is legal only for racing vehicles not used or registered on public highways.
K&N .315/.431 Flange 1 3/8 inch OD 1.5 inch H Clamp On Crankcase Vent Filter