Toyota Supra, Yaris GR, Tuning & Performance
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NGK Iridium Spark Plug Set

NGK Iridium Spark Plug Set


NGK Iridium IX spark plug set, available in heat range 6,7,8 and 9. We use these on all our cars from standard to highly modified, these are the plugs to use.

Set of 6 Included

Heat range 6 0.7 – 0.9 bar boost or 600HP

Heat range 7 1 – 1.3 bar boost or 700HP

Heat range 8 1.3 – 1.6 bar boost or 800HP

Heat range 9 1.6 bar boost + or 900HP+



  • Designed specifically for the performance enthusiast. Iridium IX© offers extreme ignitability, improved throttle response and superior anti fouling

    • Fine Iridium tip ensures high durability and a consistently stable spark
    • Iridium alloy has extremely high melting point, perfect for today?s high-tech, high-performance engines
    • Trivalent Metal Plating – superior anti-corrosion and anti-seizing properties
    • Outstanding acceleration, high fuel efficiency and durability
    • Ultimate design, technology and performance.
IX Tip Horizontal

Additional information

Heat Range

6, 7, 8, 9


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