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NGK Laser Iridium Performance Spark Plugs (03-04 Cobra; 07-14 GT500)

Item 64019
AmericanMuscle no longer carries the NGK Laser Iridium Performance Spark Plugs (03-04 Cobra; 07-14 GT500). Please check out 2015-2021 Mustang Spark Plugs & Spark Plug Wires for an updated selection.
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    Product Information

    Features, Description, Reviews, Q&A, Specs & Installation

    Features

    • High Performance Replacement
    • Improves Fuel Economy and Lower Emissions
    • Heat Range: 6
    • NGK Part# 4477
    • Fits 03-04 SVT Cobra and 07-14 Shelby GT500
    • Sold as a Set of 8

    Description

    Regular Maintenance. Replacing your old weak spark plugs is paramount to keep your engine running smoothly and efficiently, so why replace them with the same old sub-par stock plugs when high performance plugs from NGK will improve fuel efficiency and lower your emissions.

    Superior Construction. NGK Laser Iridium Performance Spark Plugs feature an iridium disk that is welded on the center electrode and a platinum disk that is welded on the ground electrode to reduce the wear rate of both surfaces ensuring greater durability and longer life. NGK uses pinpoint precision laser welds to reduce excess debris decreasing the required voltage to bridge the spark gap for a more efficient burn.

    Application. This set of eight (8) NGK Laser Iridium Performance Spark Plugs are specifically designed as a direct fit replacement for the 2003 to 2004 SVT Cobra and the 2007 to 2014 Shelby GT500 Mustang equipped with the supercharged 5.4 liter V8.

    Fitment:

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    Installation & What's in the Box

    Installation Info

    What's in the Box

    • (8) Spark Plugs

    Tech Specs

    4.8

    Customer Reviews (82)

      Questions & Answers

      10 More Questions

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