Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
The NGK Ruthenium HX High Ignitability spark plug brings advanced tip technology for modern engines that require strong spark energy. Patented Ruthenium tip designs and a double fine electrode configuration encourage more complete combustion, improving throttle response, smoother idle and better cold starts. Ruthenium center electrodes offer industry‑leading durability, making these plugs appropriate for newer vehicles demanding higher ignitability and longevity.
NGK Ruthenium HX Spark Plug Box of 4 (LFR5AHX)
