A forged billet air cleaner featuring unmistakable Ness looks. Includes a pre-oiled black cotton air filter element, which is washable, for best filtration and a non-restrictive air flow. The Arlen Ness 'Next generation' patented backing plate, with internal breathers, give the filter and engine a clean and unobstructed look. The clear polycarbonate window allows you to see straight into the throttle body of the running engine. Expect a better seating position since the angled outer side of the air cleaner offers improved legroom. Kit includes all gaskets and hardware required for installation. Note: An optional rain sock / pre-filter is available as 18-062.