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    Denso Spark Plug Iridium Long-Life (FK16HR-11)

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    Exact Fit May Not Fit Doesn't Fit for your

    Warranty Information
    Save 25% on 4 or more Autolite Iridium Spark Plugs with the purchase of any advertised FRAM Full Synthetic or Full Synthetic High Mileage Oil Change Bundle. See savings in your cart after adding Oil Change Bundle and Autolite Iridium spark plugs to cart.
    • Product Details

      Part No. 3450

      Warranty Details (1 YR REPLACEMENT IF DEFECTIVE)

      Manufactured to the strictest OE performance, durability and emissions standards.

      Product Features:

      • No-compromise, top of the line race spark plug for the most serious enthusiast.
      • Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
      • Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
      • Wide range of part numbers for thousands of applications, including classic and collector cars
      • Lasts twice as long as most conventional plugs
      • Withstands temperatures greater than 4000° Fahrenheit

    • Specifications
      • Electrode Core Material:Copper
        Electrode Tip Material:0.5mm Iridium
        Ground Strap Quantity:1
        Insulator Type:Purified Alumina
        Manufacturer Heat Range:16
        Material:0.5mm Iridium
        Resistor:Yes
        Seat Type:Gasket
        Type:Iridium Long Life
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