Genuine OEM Audi Spark Plug, part number 101000063AA. This vital component is responsible for igniting the compressed air-fuel mixture within the engine's combustion chambers, initiating the power stroke. Proper ignition is essential for efficient engine operation, fuel economy, and reduced emissions. Installed in the cylinder head, it features a precise electrode gap and heat range. Weighing 0.046 kg, using genuine OEM spark plugs ensures optimal performance, correct thermal characteristics, and reliable starting, maintaining engine health and efficiency.