The DENSO Iridium TT spark plug (IW16TT) represents a significant advancement in ignition technology. Featuring a unique twin-tip design with both iridium and platinum, these plugs ensure exceptional durability and consistent spark energy. This design minimizes electrode wear, leading to a longer service life compared to conventional spark plugs. The Iridium TT series is built to withstand the demanding conditions of modern engines, providing reliable performance across a wide range of applications. Experience improved throttle response, smoother idling, and enhanced fuel economy with the DENSO IW16TT. Its advanced construction promotes efficient combustion, reducing emissions and contributing to a cleaner-running vehicle. Trust DENSO for cutting-edge ignition solutions that deliver on performance and reliability.