Genuine OEM Porsche Spark Plug, part number 99917023390. This spark plug ignites the air-fuel mixture in the engine. It is a critical component for combustion. The part weighs 0.05 kg and has dimensions of 0.09263m x 0.04325m x 0.02438m. Genuine OEM spark plugs are manufactured to exact specifications, ensuring precise gap and material composition for reliable ignition and optimal engine performance.