Using your K&N air filter is easy. First, open your vehicle's factory air box. Take out the old air filter and place the K&N filter in its spot. Make sure it fits snugly and close the air box. As for maintenance, you don't need to replace it often. When it gets dirty, you can wash it. Just use a K&N cleaning kit, which is available separately. Soak the filter in the cleaner, then rinse it gently with water. Let it dry completely before oiling it with the K&N filter oil. When oiling, apply it evenly. Keep in mind that the filter should be dry before you oil it. Also, make sure to follow the instructions on the cleaning kit for the best results. With proper care, this filter will serve you well for the life of your vehicle.