Features and Benefits: The Air Filter is a direct replacement with those who use an afterrmarket intake sytem The filter will improve overall air filtration, horse power, torque and gas mileage over stock filters It is washable and will last the lifetime of your engine Help to draw more air into your engine so as to improve throttle response and enhance horsepower The fine mesh increases the amount of air flow, straightens the flow and stops sucking hot air from high temperature engine compartment Specifications: Brand New & High Quality Color: Black or Silver Grey Bottom Diameter: Choose Between 9mm, 12mm, 18mm, 25mm Easy to install (directly bolt on) Package Includes: One Air Filter