The NGK Ruthenium HX High Ignitability spark plug employs patented ruthenium tip technology to meet the needs of modern engines that require high ignitability and extended life. It’s engineered to improve cold starts, throttle response and idle quality. Specialized DFE/PSPE tip designs concentrate spark energy for a more complete burn. With a 0.4mm ruthenium center and 0.8mm platinum ground electrode plus alumina ceramic insulation, corrugated ribs and trivalent plating, the plug resists flashover and controls heat.
NGK Ruthenium HX Spark Plug Box of 4 (TR5AHX)