The Hengst Engine Air Filter Kit - 473331 is a comprehensive kit of products designed for use with a car's engine air filter. It includes various components that are essential for maintaining the cleanliness and efficiency of the engine air filter. The kit contains a high-quality air filter element, as well as a gasket or seal to ensure a tight fit. Additionally, the kit may also include other items such as screws, clips, or other hardware necessary for installation. This kit is designed to provide all the necessary components for replacing or servicing a car's engine air filter, ensuring optimal performance and protection for the engine.