Using your K&N air filter is a breeze. First, locate your vehicle's factory air box. Open it up and remove the old air filter. Then, simply drop the K&N filter into the same spot. Make sure it fits snugly and close the air box. As for maintenance, you don't need to replace it often. But every once in a while, you should wash it. You can use K&N's filter cleaning kit. Just follow the instructions on the kit to wash and re - oil the filter. Keep in mind that when handling the filter, be gentle with the oiled cotton media. Also, always make sure the filter is completely dry before reinstalling it. This will ensure your filter works well and lasts as long as possible.