This DENSO Iridium Spark Plug (part code SK20HR-A11) is designed to deliver superior ignition performance. Its advanced iridium construction ensures a hotter, more powerful spark, leading to improved combustion efficiency and fuel economy. The SK20HR-A11 is built for longevity, offering extended service life compared to conventional spark plugs. This means fewer replacements and reliable performance over time, reducing maintenance hassles. Experience smoother engine operation and enhanced throttle response with this high-quality spark plug. It is engineered to meet the demanding requirements of modern engines, providing a dependable connection for optimal power delivery.