Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
The NGK Iridium IX spark plug is built for drivers seeking sharper throttle response and long-lasting spark durability. Its fine iridium center electrode and tapered-cut ground electrode offer extreme ignitability, improved starting and reduced fouling. The alloy’s high melting point supports high-temperature engines, while trivalent plating and robust insulator design aid corrosion resistance and consistent performance. Box of four.
NGK Iridium Stock Heat Spark Plug Box of 4 (LZTR5AIX-13)
