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    ACDelco Iridium Spark Plug

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    Warranty Information
    • Product Details

      Part No. 41-993

      Warranty Details (7 YR REPLACEMENT IF DEFECTIVE)

      ACDelco Professional Iridium Spark Plugs are a high quality replacement for many vehicles on the road today. They are our latest in spark plug technology and an exact replacement for your vehicle's original components. Iridium composition provides a high melting point and great strength, and provides excellent wear resistance and durability. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function.

      Product Features:

      • Iridium offers excellent engine idle stability and smooth performance
      • Iridium allows for small, efficient electrode designs for reliable cold starting and quick acceleration
      • Iridium fine-wire electrode helps burn away carbon deposits on the tip of the plug as they form
      • One piece suppressor seal helps block radio frequencies that can affect vehicle electronics
      • Suppressor seal meters spark energy for long electrode life and helps prevent combustion leakage

    • Specifications
      • Center Electrode Core Material:Copper
        Center Electrode Tip Material:Iridium
        Ground Configuration:Single
        Ground Electrode Core Material:Nickel Alloy
        Ground Electrode Quantity:1
        Ground Electrode Tip Design:Single Prong Electrode
        Hex Size:5/8in
        Insulator Height:3.012 in
        Manufacturer Heat Range:4
        Pre-Gap Size:0.059 in
        Programming Required:No
        Reach:0.689 in
        Resistor Type:Yes
        Seat Type:Gasket
        Thread Diameter:0.551 in
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