The DENSO Iridium TT spark plug (SKJ20DR-M13) represents a significant advancement in ignition technology. Featuring a unique twin-tip design with iridium and platinum, it ensures superior ignitability and a longer service life compared to conventional spark plugs. This plug is designed to provide a hotter spark, leading to more complete combustion. This translates to improved fuel economy, reduced emissions, and enhanced engine performance across a wide range of driving conditions. The advanced materials used in its construction offer exceptional resistance to wear and corrosion, guaranteeing reliable operation. DENSO's commitment to quality is evident in the meticulous engineering of the Iridium TT series. Each spark plug undergoes rigorous testing to meet stringent performance standards, making it a dependable choice for maintaining your vehicle's engine health and responsiveness. Installation is straightforward, offering a direct fit for compatible applications.