This DENSO Iridium Spark Plug, part code X22ESR-U, is engineered for superior durability and consistent performance. Its advanced iridium construction ensures a hotter spark and improved fuel efficiency, contributing to a smoother running engine. Designed to meet the demanding requirements of modern engines, this spark plug offers excellent resistance to fouling and wear. It provides reliable ignition across a wide range of operating conditions, ensuring your vehicle starts easily and performs optimally. Choosing DENSO means opting for quality and precision. This spark plug is a direct fit for compatible vehicles, making installation straightforward and ensuring proper function. Experience the difference that high-quality ignition components can make in your vehicle's overall health and performance.