Using this Grimmspeed alternator cover is a breeze. First, make sure your Subaru is turned off and cooled down. Then, simply attach the cover using the included hardware. It's a direct fit, so you won't need to modify anything. As for maintenance, you can clean it with a mild automotive cleaner and a soft cloth. Avoid using abrasive materials that could scratch the powdercoat finish. Also, keep an eye on the hardware to ensure it stays tight over time. If you're driving in harsh conditions, it might be a good idea to check the cover more frequently to make sure it's still securely in place.