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The NGK Ruthenium HX High Ignitability spark plug uses patented Ruthenium tip technology to deliver enhanced ignitability and long service life for modern engines. Double fine electrode geometry concentrates spark energy for improved combustion across a wider range of air‑fuel ratios, yielding better throttle response and cold starts. Recommended where OE DFE/PSPE style plugs are used or where advanced ignitability is desired.
NGK Ruthenium HX Spark Plug Box of 4 (FR5BHX)
