DENSO's Iridium Spark Plug, part code K20PSR-B8, is engineered for superior ignition and durability. Its advanced iridium alloy tip ensures a hotter spark and longer lifespan compared to conventional plugs. This spark plug is designed to provide consistent performance, improved fuel economy, and reduced emissions. The U-groove ground electrode design further enhances ignitability and prevents fouling, ensuring reliable operation under various driving conditions. Trust DENSO's commitment to quality and innovation for your vehicle's ignition system. This spark plug is a direct fit for many applications, offering a hassle-free replacement and peace of mind.