Using this ETS pulley cover is easy. Just grab the included hardware and install it on your 2015 - 2021 Subaru WRX engine bay according to the general installation steps. When installing, make sure to align it properly to ensure a good fit. As for maintenance, you can clean it with a mild car cleaner regularly. Avoid using abrasive materials as they might scratch the powder - coated surface. Also, check the hardware periodically to make sure it's still tight. If you notice any loose parts, tighten them up right away. This way, your pulley cover will keep looking great and functioning well for a long time.