The DENSO Iridium TT spark plug (SKJ16CR-A8) is engineered for superior ignition and durability. Featuring a unique Iridium TT design, this spark plug offers enhanced combustion efficiency, leading to improved engine performance and better fuel economy. Its advanced construction ensures reliable spark generation across a wide range of operating conditions. Designed for longevity, the Iridium TT spark plug provides consistent performance over its service life, reducing the need for frequent replacements. Trust DENSO for high-quality ignition components that deliver on performance and reliability.