This DENSO Iridium Spark Plug, part code IW27, is engineered for superior performance and durability. Its advanced iridium alloy construction ensures a hot, stable spark, leading to improved fuel efficiency and smoother engine operation. The IW27 is designed to meet the demanding requirements of modern engines, providing consistent ignition even under harsh conditions. Trust DENSO for high-quality ignition components that deliver lasting reliability and performance. Key features include a fine-wire iridium center electrode for reduced voltage requirement and increased ignitability, along with a platinum ground electrode for enhanced durability. This combination ensures a long service life and optimal combustion.