Arlen Ness 18-821 Black Big Sucker Stage II Air Filter Kit with Cover Features a one-piece aluminum backing plate/carb support bracket with patented hidden Breather technology and radius air inlet Eliminates the need for banjo Fittings, Hoses and filter Breather passages exit at the mouth of the carburetor/throttle body, creating a virtually closed-loop system Kit Includes a 20% larger high-performance filter and Steel outer cover Pre-oiled filters Available in two styles: standard or stainless-steel jacketed