Using your DC Sports air filter is easy. First, locate your old air filter and remove it. Then, take your new DC Sports air filter and bolt it directly to your intake tubing using the urethane base flange. There's no need for additional couplers. Make sure the filter is securely attached. As for maintenance, check the filter regularly. If it gets dirty, you can clean it with a suitable filter cleaner. When cleaning, follow the cleaner's instructions carefully. Also, remember to re - oil the filter after cleaning to keep it performing at its best. And if you notice any damage to the filter or the urethane base, it's time to replace it.