Using your K&N air filter is easy. First, open your BMW's factory air box. Take out the old air filter and replace it with the K&N filter. Make sure it fits snugly in place. When it comes to maintenance, clean your filter regularly. You can wash it with a mild cleaner and let it dry completely. Then, re - oil it using K&N's filter oil. Always follow the instructions on the oil bottle. Keep in mind that this filter is made to last a long time, but proper care will ensure it performs at its best. Avoid using harsh chemicals on the filter as it can damage the cotton media. Also, check the filter regularly for any signs of excessive dirt or damage.
