Using your K&N air filter is easy. First, locate your vehicle's factory air box. Then, simply remove the old air filter and drop in the K&N replacement filter. Make sure it fits snugly. When it comes to maintenance, check the filter regularly. If it looks dirty, it's time to clean it. Wash the filter gently with mild soap and water, then let it dry completely. After that, re - oil the filter according to K&N's instructions. Remember to always follow the maintenance schedule for the best performance. Also, keep the filter away from sharp objects to avoid damage.