Using your K&N air filters is a breeze. First, locate your vehicle's factory air box. Open it up and carefully remove the old air filters. Then, simply place the new K&N filters into the air box, making sure they fit snugly. Close the air box and you're good to go. As for maintenance, these filters are washable and reusable. When it gets dirty, you can wash it with a mild detergent and water. Let it dry completely before oiling it again. Remember to use only K&N filter oil for the best results. Also, check the filter regularly, especially if you drive in dusty or dirty conditions. With proper care, your K&N air filters will serve you well for the entire lifespan of your vehicle.