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    SAVE $15 AFTER MAIL-IN REBATE*

    When you buy 4 or more Denso® Iridium Power OR TT® Spark Plugs with Permatex® Dielectric Tune-Up Grease

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    Iridium Spark Plugs

    • Iridium tip is the hardest spark plug metal type & most resistant to erosion
    • Maintains the correct gap longer than any other metal type
    • Lower voltage requirement for spark to jump gap, improving efficiency
    • Fine tip design helps prevent fouling and improve performance
     

    DOUBLE PLATINUM SPARK PLUGS

    • Platinum on both the center and ground electrodes
    • Double Platinum recommended for waste spark ignition systems
    • Fine wire design helps prevent fouling and improves performance
     

    Platinum Spark Plugs

    • Platinum on center electrode only
    • Platinum is a harder metal that resists oxidation, arc erosion, and maintains gap longer than copper
     

    Copper Spark Plugs

    • Copper plugs have a copper core and nickel alloy electrode tip
    • Nickel is the softest spark plug metal type, which is why it wears out quicker
    • Requires more voltage to fire than a precious metal plug because the electrode tips cannot be made as fine as Platinum or Iridium

    SHOP SPARK PLUGS

     

    How-To Videos

     

    Chris Fix — Ultimate Guide to Spark Plugs

    Popular DIYer Chris Fix shows you which spark plugs are the best choice for your vehicle and how to easily install them.

    What’s the Difference Between Spark Plug Types?

    Learn more about the different types of spark plugs, the pros and cons of each, and why you may need one over the other.

     

     

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    What You Need to Know About Engine Misfires

    An engine misfire can be a temporary or continuous problem that seems like a mystery. Learn about the different components of misfires and possible solutions.

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    Understanding Different Spark Plugs

    With multiple options, it’s difficult to know which spark plug is right for your vehicle. Learn about your options and an easy way to pick the right one.

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    Step By Step – How to Change Your Spark Plugs

    Spark plugs are one of the easiest parts to replace in most vehicles, making it a job you can still do on modern high-tech vehicles and older cars alike.

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