Genuine OEM Volkswagen Spark Plug, part number 06H905621A. This essential component is responsible for generating the spark that ignites the air-fuel mixture within the engine's combustion chambers. It is installed directly into the cylinder head. Weighing 0.057 kg, this spark plug is engineered for optimal performance and durability. Using a genuine OEM spark plug ensures the correct heat range, electrode gap, and material composition for reliable ignition, consistent engine performance, and proper emissions control.