The Genuine Porsche Spark Plug - 99917018390 is a high-quality, OEM replacement spark plug designed specifically for Porsche vehicles. It is made with premium materials and engineered to meet the exact specifications of Porsche's performance standards. This spark plug ensures efficient combustion and reliable ignition, resulting in improved engine performance and fuel efficiency. It is compatible with a wide range of Porsche models and is a crucial component for maintaining the optimal functioning of the engine.