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Ruthenium HX™ brings the most advanced spark plug technology to the automotive aftermarket, delivering better efficiency and power for the Mazdaspeed Platform


You'll get almost twice the amount of spark compared to iridium and increased durability thanks to the new Ruthenium Design!



  • PSPE® tip designs
  • Superior oxidation resistance
  • Advanced high-ignitability technology
  • Enhanced blistering/anti-peeling


Irridiums will get you roughly 5000-8000kms out of a good set, due to the increased durability of the Ruthenium Plugs you'll get 8000-12,000kms!


Price is for a set of 4



NGK Ruthenium Spark Plugs x 4

PriceFrom $165.00
Sales Tax Included
Out of Stock
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