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    ACDelco Double Platinum Spark Plug

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    Warranty Information
    • Product Details

      Part No. 41-979

      Warranty Details (7 YR REPLACEMENT IF DEFECTIVE)

      ACDelco GM Original Equipment Double Platinum Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These Double Platinum Spark Plugs are the high quality replacements for many vehicles on the road today. With a copper core and double platinum pads on the center electrode, these plugs are designed to deliver long-lasting performance. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.

      Product Features:

      • One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal that helps reduce radio frequency and engine interference, regulate spark plug energy, and protect against compression pressures for long life
      • Double platinum point pad on center and ground electrode offer excellent durability and consistent voltage demands to help reduce wear on ignition system
      • Pure copper core results in cooler electrode temperature for maximized durability and fouling resistance
      • Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
      • ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
      • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
      • GM regularly updates production and service part designs to integrate new materials and technologies

    • Specifications
      • Center Electrode Core Material:Cu-core Ni
        Center Electrode Tip Material:Pt rivet
        Ground Configuration:Pt pad
        Ground Electrode Core Material:Nickel
        Ground Electrode Quantity:1
        Ground Electrode Tip Design:Pt pad
        Hex Size:16
        Insulator Height:2.087 in
        Manufacturer Heat Range:14
        Pre-Gap Size:0.063 in
        Programming Required:No
        Reach:0.689 in
        Resistor Type:Yes
        Seat Type:Conical
        Thread Diameter:0.551 in
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