Using this GrimmSpeed alternator cover is easy. First, remove the plastic factory cover from your vehicle. Then, place the new cover in its position. The slotted mounting features make it flexible to fit and easy to install. When installing, use the drive - by - cable dimples as a guide if you need to drill cable mounts. For vehicles like the Forester, Legacy, and Outback, remember to buy the additional OEM Subaru bracket (23791AA002) to ensure a proper fit. Maintenance is simple. The durable DuPont powder coating and anodized black machined aluminum mounts are resistant to corrosion. Just clean it regularly with a mild cleaner to keep it looking great. If you notice any damage, check the mounts and the cover itself, and contact customer service if needed.