Genuine OEM Volkswagen Spark Plug, part number 06K905601L. This essential component is responsible for igniting the compressed air-fuel mixture within the engine's combustion chambers, initiating the power stroke. It is installed directly into the engine cylinders. Featuring a robust design with a ceramic insulator and precise electrode gap, it ensures consistent and powerful sparks. Genuine OEM spark plugs are engineered for optimal heat range, electrode material, and gap specifications, which are crucial for engine performance, fuel economy, and emissions compliance.