The Denso Spark Plug (Iridium TT) 4717 ITL16TT is a brand new, high-quality spark plug designed as a vintage part for gasoline engines. Made with nickel material and manufactured in Japan by Denso, this spark plug offers superior performance and is a genuine OE/OEM part number 4717 Itl16tt. With a 1-year manufacturer warranty, this spark plug is a reliable choice for ignition systems in cars and trucks, providing improved combustion for better engine performance.