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    Denso Spark Plug Iridium Long-Life

    Part # 3439
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    • Product Details

      Part No. 3439

      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:20
        Material:0.5mm Iridium
        Reach:1.04 in
        Resistor:Yes
        Seat Type:Gasket
        Thread Diameter:12 mm
        Tip Configuration:0.5mm Iridium
        Type:Iridium Long Life
        Wrench Diameter:9/16 in
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