Here's how to use your K&N air filter: First, make sure your vehicle is turned off. Then, locate your factory air box. Open it up and carefully remove the old air filter. Take your new K&N air filter and place it in the same position as the old one. Make sure it fits snugly. Close the air box, and you're good to go. As for maintenance, the K&N filter is washable and reusable. When it gets dirty, you can wash it with a special K&N filter cleaner. After cleaning, let it dry completely and re - oil it according to the instructions. Remember to always follow the maintenance schedule for your vehicle. And if you have any questions about installation or maintenance, don't hesitate to contact K&N's customer service.