Using your K&N air filter is easy. First, locate your factory air box. Open it up and carefully remove the old air filter. Then, simply drop in the new K&N filter. Make sure it fits snugly and close the air box. As for maintenance, since it's washable and reusable, you can clean it periodically. When the filter starts looking dirty, take it out and gently wash it with a mild detergent and water. Let it dry completely, then re - oil it using K&N filter oil. This will keep it working at its best. Remember, don't use harsh chemicals or scrub too hard, as it can damage the filter media. Also, always refer to your vehicle's manual for any specific instructions regarding the air box or filter changes.