Conical air filter that attaches directly to the body of the Dellorto PHM40 carburetor as used on LeMans 1000 1986-1991, 1000S 1991, and some California III. Stainless steel mesh, paper filter element, stainless steel clamp, chrome plated end caps. These filters also fit directly onto the fuel injection throttle body on V11 California fuel injected models 1997-2013. These filters are relatively small and compact and therefore useful for tight clearance applications. Throat ID is 52mm.