Air filter universal conical for carburetors. Built in the USA by S&B Filters with a special fiber coating Dupont are able to improve significantly the passage of air to the carburetor improving performance. The peculiarity of these filters is the ability to use both oiled both without oiling where, while maintaining a filtering power equal to the versions oiled, it has an air passage even more without having to constantly restore the oiling. Can be ordered in different sizes according to diagram in secondary image: