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NGK
NGK Iridium Spark Plug - IRITOP9

NGK Iridium Spark Plug - IRITOP9

Best price now

$22.00at Spark Plugs DirectChecked Nov 9

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Price facts

  • Last seen at $22.00 at Spark Plugs Direct on Nov 9.

    • Our take on the NGK Iridium Spark Plug - IRITOP9

    The NGK IRITOP9 is an iridium spark plug from NGK, a Japanese maker that supplies plugs to most major automakers as original equipment. The iridium center electrode is much harder than nickel, so the gap holds its shape far longer and the plug typically lasts several times the service interval of a standard copper-core plug. It suits drivers replacing plugs on a car that calls for this part number, and it competes with iridium plugs from Denso, Bosch and Champion on durability rather than on any tuning gain.

    Best forDirect replacement for vehicles specifying the IRITOP9 part numberDrivers who want a long service interval between plug changesMaintenance on a car with iridium plugs fitted from the factory
    Pros
    • Iridium center electrode resists gap erosion far better than nickel
    • Long service life compared with standard copper-core plugs
    • NGK is original equipment on many engines, so the part matches factory spec
    • Stable spark over the life of the plug
    Cons
    • Must match the exact part number; iridium plugs are not interchangeable across engines
    • Costs more than a standard nickel plug
    • Gapping or dropping an iridium plug can damage the fine electrode
    • No performance gain if the engine was not designed for it

    NGK Iridium Spark Plug - IRITOP9 prices at every store

    • Spark Plugs DirectNew

      In stockShips from Australia · duties may applyReturn policy

      $22.00Checked Nov 9
      Visit Spark Plugs Direct

    About the NGK Iridium Spark Plug - IRITOP9

    NGK Iridium Spark Plug - IRITOP9

    Questions and answers

    Is the IRITOP9 a direct replacement for my car?
    Only if your owner's manual or the old plug lists IRITOP9 or the matching NGK stock number. Iridium plugs are engine-specific, so check the part number before buying.
    How long does an iridium plug last?
    NGK rates iridium plugs for a much longer interval than standard nickel plugs, often around 60,000 to 100,000 miles depending on the engine. Follow the interval in your owner's manual.
    Should I replace all plugs at once?
    Yes. Plugs in one engine wear together, and mixing old and new plugs can cause uneven running. Replace the full set.
    Do I need to gap it before fitting?
    NGK sets the gap at the factory for the specified engine. Check it rather than bending the fine iridium electrode, which is easy to damage.
    Will it add power?
    No. It restores the spark your engine was designed for. Any gain comes from replacing worn plugs, not from the iridium itself.
    Where is the NGK Iridium Spark Plug - IRITOP9 cheapest?
    At Spark Plugs Direct, for $22.00, as of our latest check.

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