The DENSO Iridium TT spark plug (part code XU22TT) is engineered for superior ignition and durability. Its advanced design features a 0.4mm iridium center electrode and a platinum-tipped ground electrode, ensuring a powerful spark and extended service life. This plug is designed to provide consistent performance across a wide range of operating conditions. The Iridium TT technology minimizes voltage requirements for ignition, leading to improved fuel economy and reduced emissions. It's a reliable choice for drivers seeking enhanced engine responsiveness and smooth operation. DENSO's commitment to quality is evident in the precision manufacturing of the XU22TT. It offers excellent resistance to fouling and wear, making it a dependable component for maintaining your vehicle's ignition system.