After you pull the cover off, flip it over. You will see some screws on either side. Under the two covers where the screws are you will find the air filters. You can buy K&N replacements if they are not already replaced. The K&Ns last forever with just cleaning and re oiling. Good luck. Oh, when you put it back on, slide the air tubes into the radiator support first, push it far enough forward that the oil filter housing hole is lined up and push the cover down at the rear, line up the air intake with the air box hole. Push down on the cover at rear and front, you will feel it fit in.