DENSO's Iridium TT spark plugs are engineered for exceptional durability and ignitability. Featuring a unique twin-tip design with an iridium center electrode and platinum-tipped ground electrode, these plugs ensure a powerful spark and consistent combustion. This advanced construction minimizes wear and tear, providing a longer service life compared to conventional spark plugs. The Iridium TT series is designed to meet the demanding requirements of modern engines, delivering optimal fuel efficiency and smooth engine operation. Experience enhanced throttle response and reliable starting, even in challenging conditions. DENSO's commitment to quality manufacturing guarantees a high-performance component that you can depend on for your vehicle's ignition system.