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. The 62-2470 crankcase vent filter has a K&N embossed chrome top and chrome base. The 5/16 inch flange is designed to clamp on to metal or plastic tubing where venting is needed. This air filter is constructed with a non-woven synthetic filter media so it can be cleaned and reused repeatedly. Note: Legal in California only for racing vehicles which may never be used, registered, or licensed for use upon a highway. See knfilters.com for CARB status on each part for a specific vehicle.