The NGK Ruthenium HX High Ignitability spark plug uses patented ruthenium tip technology and a Double Fine Electrode design to concentrate spark energy for more complete combustion. That results in quicker throttle response, smoother idle and improved cold starts for modern engines. Ruthenium and platinum fine-wire electrodes offer industry-leading durability, while alumina ceramic insulation and anti-corrosion plating support long service life.
NGK Ruthenium HX Spark Plug - Box of 4 (LFR6BHX)