The West Coast Choppers billet Aluminum air cleaner has become a modern day classic, and a must have for any serious chopper build. We have now made them even more exclusive. Each Air Cleaner kit is serial numbered with a corresponding authenticity card. Kit also includes choke knob and dog bone mount and filter element by UNI Filter. Fitment S S carbs, Harley FE, M8 with adaptor. Questions about this part or one of the other authentic parts, please send an email to parts@westcoastchoppers.com .