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    Autolite Iridium Ultra Finewire Spark Plug

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    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. AI3923

      Warranty Details (LIMITED LIFETIME REPLACEMENT)

      Autolite® Iridium Ultra Laser Finewire Spark Plugs are one of our brand's most technologically advanced products. These spark plugs provide superior durability, more focused ignition with better overall ignitability for optimum performance. Autolite® Spark Plugs are the best alternative to OE spark plugs, offering OE fit form and function supporting all foreign and domestic makes and models at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs in the world.

      Product Features:

      • Autolite Iridium Ultra® is an engineered OE replacement iridium spark plug.
      • A laser-welded 0.5mm pure iridium finewire center electrode provides optimal fuel efficiency, acceleration and focused ignitability.
      • Nickel-plated shell to resist corrosion.
      • High-alumina ceramic insulator for increased strength.
      • Laser welded 0.5mm Iridium finewire center electrode.
      • Proprietary platinum sidewire technology.

    • Specifications
      • Center Electrode Core Material:Iridium
        Electrical Terminal Type:Stud
        Center Electrode Tip Material:Iridium
        Ground Electrode Core Material:Nickel
        Ground Electrode Quantity:1
        Ground Electrode Tip Design:Tapered
        Ground Electrode Tip Material:Platinum
        Reach:0.75 in
        Reach:19.5 mm
        Resistance:4000
        Pre-Gap Size:0.044 in
        Pre-Gap Size:1.1 mm
        Thread Diameter:14 mm
        Hex Size:5/8" in
        Hex Size:16 mm
        Seat Type:Flat
        Resistor Type:Yes
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