Genuine OEM Volkswagen Spark Plug, part number 05C905626. This vital engine component is responsible for igniting the compressed fuel-air mixture within the combustion chamber, which is essential for engine operation. It is installed in the cylinder head of the engine. Weighing approximately 0.059 kg, this spark plug is engineered to deliver a consistent and powerful spark. Using a genuine OEM spark plug ensures the correct heat range, electrode gap, and material composition, which are critical for maintaining engine efficiency, preventing misfires, and ensuring long-term engine health.