This DENSO K16HR-U11 spark plug is engineered for extended service life and consistent performance. Utilizing advanced iridium technology, it ensures a strong spark for efficient combustion, contributing to better fuel economy and reduced emissions. The Iridium Long Life series is designed to meet the demanding requirements of modern engines. Its superior durability and resistance to wear mean fewer replacements over the lifespan of your vehicle, offering a cost-effective solution for ignition system maintenance. Trust DENSO's commitment to quality and innovation for your vehicle's ignition needs. This spark plug provides the reliability and performance you expect from a leading automotive parts manufacturer.