The Elring Engine Cosmetic Cover Grommet - 398400 is a small rubber grommet used to secure the engine cosmetic cover in place. It is designed to fit snugly into the cover and provide a secure hold, preventing the cover from slipping or becoming loose. This grommet is made by Elring, a trusted brand in the automotive industry known for their high-quality engine components. It is an essential part for keeping the engine bay looking clean and organized. This grommet is compatible with a variety of engine models and is easy to install.