The Elring Spark Plug Recess Insert Gasket - 503791 is a high-quality gasket designed to fit into the spark plug recess of an engine. It is made by Elring, a trusted brand in the automotive industry. The gasket helps to seal the spark plug and prevent any leaks or damage to the engine. It is specifically designed for use with spark plugs and is made from durable materials to ensure long-lasting performance. This gasket is an essential component for maintaining the proper functioning of an engine and is compatible with a wide range of vehicles.