Genuine OEM Volkswagen Spark Plug, part number 101905617C. This vital component is responsible for igniting the air-fuel mixture within the engine's combustion chambers, initiating the power stroke. It is installed in the cylinder head of the engine. Weighing 0.049 kg with dimensions of 0.08m x 0.02m x 0.02m, this spark plug is engineered for precise heat range and electrode gap. Using a genuine OEM spark plug ensures optimal combustion efficiency, consistent engine performance, and proper emissions control, which is crucial for engine longevity and fuel economy.