Genuine OEM Volkswagen Spark Plug, part number 04C905606A. This vital component is threaded into the cylinder head, where it generates the electrical spark necessary to ignite the air-fuel mixture within the engine's combustion chambers. Consistent and precise ignition is fundamental for engine performance, fuel efficiency, and emissions control. Weighing approximately 0.038 kg, this spark plug is engineered to exact specifications. Choosing genuine OEM spark plugs ensures optimal performance, correct heat range, and long-lasting reliability, maintaining peak engine efficiency.