Using your K&N air filter is super easy. First, locate your factory air box. Open it up and take out the old air filter. Then, simply drop the K&N filter into the same place. Make sure it fits snugly and close the air box. As for maintenance, every once in a while, you'll need to clean the filter. You can use a K&N filter cleaning kit. Follow the instructions on the kit to wash the filter gently and let it dry completely. Once it's dry, re - oil it with the K&N filter oil. A well - maintained filter will keep your engine running smoothly. Remember, don't use any harsh chemicals or abrasive materials on the filter, as this can damage it. And always refer to your vehicle's manual if you have any specific concerns.