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    Denso IK16 Iridium Power Spark Plug

    Part # 5303
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    Save $3 per Spark Plug by mail when you buy 4 or more ACDelco Professional Iridium Spark Plugs. See rebates page for details.
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    • Product Details

      Part No. 5303

      Warranty Details (1 YR REPLACEMENT IF DEFECTIVE)

      This spark plug features a small center electrode (0.4 diameter), a tapered tip, a U-groove design and a special iridium alloy (90% Ir) for powerful performance.

    • Specifications
      • Electrode Core Material:Copper
        Electrode Tip Material:0.4mm Iridium
        Ground Strap Quantity:1
        Insulator Type:Purified Alumina
        Manufacturer Heat Range:16
        Material:0.4mm Iridium
        Reach:3/4 in
        Resistor:Yes
        Seat Type:Gasket
        Thread Diameter:14 mm
        Tip Configuration:0.4mm Iridium
        Type:Iridium Power
        Wrench Diameter:5/8 in
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