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Spark Plugs and Glow Plugs - NGK Ruthenium HX Spark Plugs
High-Ignitability Spark Plugs. NGK Ruthenium HX™ brings the most advanced spark plug technology to the automotive aftermarket, delivering better efficiency and power for today’s engines.

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Items 1-25 of 25
Description: Spark Plug, Ruthenium HX, 14 mm Thread, 25 mm Reach, Tapered Seat, Stock Number 90220, Resistor, Each
Item #: NGKLTR5AHX
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Description: Spark Plug, Ruthenium HX, 12 mm Thread, 26.5 mm Reach, Gasket Seat, Stock Number 90465, Resistor, Each
Item #: NGKLKR8BHX-S
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 25 mm Reach, Tapered Seat, Stock Number 90495, Resistor, Each
Item #: NGKLTR6BHX
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 25 mm Reach, Tapered Seat, Stock Number 91276, Resistor, Each
Item #: NGKLTR6AHX
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Description: Spark Plug, Ruthenium HX, 12 mm Thread, 26.5 mm Reach, Gasket Seat, Stock Number 91356, Resistor, Each
Item #: NGKLKR6AHX
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Description: Spark Plug, Ruthenium HX, 12 mm Thread, 26.5 mm Reach, Gasket Seat, Stock Number 91784, Resistor, Each
Item #: NGKLKAR8BHX
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Description: Spark Plug, Ruthenium HX, 12 mm Thread, 26.5 mm Reach, Gasket Seat, Stock Number 92274, Resistor, Each
Item #: NGKLKAR7AHX-S
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 0.750 in Reach, Gasket Seat, Stock Number 92375, Resistor, Each
Item #: NGKFR5AHX-E
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 0.750 in Reach, Gasket Seat, Stock Number 92400, Resistor, Each
Item #: NGKFR7BHX-S
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 0.708 in Reach, Tapered Seat, Stock Number 92714, Resistor, Each
Item #: NGKTR6AHX
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 26.5 mm Reach, Gasket Seat, Stock Number 93420, Resistor, Each
Item #: NGKLFR6BHX
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Description: Spark Plug, Ruthenium HX, 12 mm Thread, 26.5 mm Reach, Gasket Seat, Stock Number 93763, Resistor, Each
Item #: NGKLKR6BHX-E
Condition: New
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 26.5 mm Reach, Gasket Seat, Stock Number 94122, Resistor, Each
Item #: NGKLFR6AHX-S
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Price: $16.99
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 0.750 in Reach, Gasket Seat, Stock Number 94279, Resistor, Each
Item #: NGKFR6AHX-S
Condition: New
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 0.708 in Reach, Tapered Seat, Stock Number 94567, Resistor, Each
Item #: NGKTR5AHX
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Description: Spark Plug, Ruthenium HX, 12 mm Thread, 26.5 mm Reach, Gasket Seat, Stock Number 94705, Resistor, Each
Item #: NGKLKR7BHX
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 26.5 mm Reach, Gasket Seat, Stock Number 95125, Resistor, Each
Item #: NGKLFER7BHX
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 0.750 in Reach, Gasket Seat, Stock Number 95159, Resistor, Each
Item #: NGKFR6BHX-S
Condition: New
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 25 mm Reach, Tapered Seat, Stock Number 95605, Resistor, Each
Item #: NGKLTR7BHX
Condition: New
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 0.750 in Reach, Gasket Seat, Stock Number 95839, Resistor, Each
Item #: NGKFR5AHX
Condition: New
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 26.5 mm Reach, Gasket Seat, Stock Number 96355, Resistor, Each
Item #: NGKLFR5AHX
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Description: Spark Plug, Ruthenium HX, 12 mm Thread, 26.5 mm Reach, Gasket Seat, Stock Number 96358, Resistor, Each
Item #: NGKLKR7AHX-S
Condition: New
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 0.750 in Reach, Gasket Seat, Stock Number 96457, Resistor, Each
Item #: NGKFR5BHX
Condition: New
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Description: Spark Plug, Ruthenium HX, 14 mm Thread, 0.708 in Reach, Tapered Seat, Stock Number 97100, Resistor, Each
Item #: NGKTR4BHX
Condition: New
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Description: Spark Plug, Ruthenium HX, 12 mm Thread, 26.5 mm Reach, Gasket Seat, Stock Number 97292, Resistor, Each
Item #: NGKLKAR6AHX
Condition: New
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Items 1-25 of 25

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More About NGK Ruthenium HX Spark Plugs

High-Ignitability Spark Plugs. NGK Ruthenium HX™ brings the most advanced spark plug technology to the automotive aftermarket, delivering better efficiency and power for today’s engines.

THE NGK DIFFERENCE

  • DFE & PSPE® tip designs
  • Superior oxidation resistance
  • Advanced high-ignitability technology
  • Enhanced blistering/anti-peeling
  • THE LATEST INNOVATION IN PRECIOUS METAL SPARK PLUGS.

    Modern engines demand more power while using less fuel, shortening the life of traditional iridium and platinum spark plugs. NGK’s patented ruthenium technology stands up better to wear to bring maximum durability and performance to your engine.

    DESIGNED FOR EVERY ENGINE.

    Ruthenium HX is available in two designs to best maximize the performance of your engine.

    DFE (double fine electrode) maximizes ignitability, while reducing emissions for low-heat engines. This NGK-patented design is recommended for non-turbo applications.

    PSPE® (projected square platinum electrode) provides the best ignitability and service life for high-heat engines. This NGK-patented design is recommended for turbo and supercharged engines.

    HIGH IGNITABILITY FOR BETTER COLD STARTS.

    Ruthenium HX provides more complete fuel burn than other precious metal spark plugs, resulting in quicker throttle response, smoother idle and better cold starts.

    BETTER DURABILITY AT HIGH TEMPERATURES.

    Ruthenium performs better at high temperatures in various driving conditions compared to the leading precious metal spark plugs.

    PROVEN TO PERFORM.

    Ruthenium HX spark plugs are manufactured in an ISO 11565-certified facility following the latest manufacturing processes and regulations. Before coming to market, all NGK spark plugs must pass extensive testing and quality checks, including acceleration, combustions, mechanical vibration and thermal shock tests.

    MORE STABLE UNDER PRESSURE.

    Standard combustion tests look for a spark plug’s ability to maintain stable performance during combustion and engine operation. When compared to conventional spark plugs, Ruthenium HX remains more stable with less dispersion.