Using this S&B replacement filter is easy. First, make sure your vehicle is turned off. Then, locate the old filter in your S&B Cold Air Intake kit and remove it. Place the new filter in the same position as the old one. For the cleanable cotton filter, if you drive mainly on city roads and highways, clean it with the S&B Cleaning Kit regularly to keep it working well. For the dry filter used in dusty areas, use compressed air to blow out the dust every once in a while to extend its life. When it's too dirty to clean, just dispose of it. Remember, this filter only fits S&B Cold Air Intake kits, not OEM Intakes.