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Ford Performance Spark Plugs (11-17 GT)

Market Price $69.59 You Save 14% ($9.60)
Our Price

$59.99 (set of 8)

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  • Item 399277

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    Features & Details

    • Perfect for Aftermarket Superchargers
    • 0.035 Spark Plug Gap is Recommended
    • Comes With An Iridium Tip For Stable Constant Spark
    • Reduces Emissions And Improves Fuel Economy
    • Comes With A Heat Range 7
    • 14mm Threaded Pattern Construction
    • Available As A Set Of 8
    • Easy And Direct Installation
    • Limited 2 Year Warranty
    • Fits All 2011 To 2017 GT Mustangs
    Improved Performance. Replacing the old weak stock plugs with the superior Ford Performance NGK Iridium IX Spark Plugs is an easy and effective means of ensuring that your supercharged Mustang engine continues to deliver high performance, runs smoothly as well as efficiently. By offering a reliable constant spark, the plugs are proven to provide improved fuel efficiency, throttle response, lower emissions as well as reducing fouling.

    High-Quality Construction. The Ford Performance NGK Iridium IX Spark Plugs come with a copper core electrode which offers superior conductivity with an iridium tip which is 6 times harder than platinum. This tip is perfect for delivering a constant peak engine performance as it has an extremely high melting point. Additionally, the tip comes with trivalent metal plating that offers superior corrosion resistance as well as anti-seizing properties.

    Installation. The Ford Performance NGK Iridium IX Spark Plugs allows for an easy direct fit replacement that does not call for modifications. With the use of simple hand tools and light mechanical skills, anyone can complete the installation in about 2 hours.

    Warranty. Ford Performance gives a guarantee that the Ford Performance NGK Iridium IX Spark Plugs are free from material and workmanship flaws and also offers a 2-year limited warranty on the same.

    Application. The Ford Performance NGK Iridium IX Spark Plugs are designed and engineered to be compatible with all 2011 To 2017 GT Mustangs that is equipped with an aftermarket supercharger.

    Fitment: 2011 2012 2013 2014 2015 2016 2017 Details

    MPN# M-12405-M50A

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (8) Spark Plugs
    • Installation Hardware
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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        Questions & Answers (7)

        5 Top Rated Questions

        What plugs are good for NA direct replacements?

        • You can use the following plugs for an NA set up -

        Helpful (6)

        what spark plugs would be for good with dish pistons N/A right now during break in time.. then supercharged later.

        • Please reach out directly to our customer service department via our live chat feature, email at, or by calling 1-855-209-8876 we need to find some additional information about your vehicle before making a recommendation and would be glad to help assist you with this build!

        Helpful (0)

        What’s the difference between this ford performance sparks plugs and the NGK iridium performance spark plugs?

        • They are merely two different brands but both meant to work with an 11-17 Mustang GT with force and nitrous inducted engines. The item I compared with can be found here: (

        Helpful (0)

        Do these spark plugs come pre gapped? I’d really like to know

        • TheFord Performance Spark Plugs (11-17 GT) do come pre gapped but it is still recommended to gap them to your vehicle's specifications before installation. It is recommended that you utilize a 0.035" plug gap for supercharged applications.

        Helpful (0)

        Can you use these on a mild Bolton 5.0?

        • These can be used but are not ideal. These are designed to work best with nitrous or boosted applications.

        Helpful (0)
        Post Your Question
        2 More Questions
        Can these be used on an N/A set up? How far should one gap them if they are N/A 1 answer
        Are these 1 step colder than stock? Can they be used with 100-150 shot nitrous? 1 answer

          Customer Reviews (6) Write a Review

          Overall Rating 4.3

          out of 5 stars

          • 5/5

            July 25, 2019

            Great plugs

            Was worried because I ordered plugs ment for boosted vehicles being it's a slightly colder plug , I gapped them accordingly and paired them with the msd street fire coil packs and man huge difference must have


            Year: 2016 Submodel: GT

            Helpful (0)

          • 5/5

            January 15, 2019

            Ford performance spark plugs

            Works great,Like Night and day , instant power . Easy installation


            Year: 2011 Submodel: GT

            Helpful (4)

          • 5/5

            September 30, 2018


            These spark plugs are NGK Iridium plugs with a Ford Performance logo on them.


            Year: 2015 Submodel: GT

            Helpful (13)

          • 5/5

            May 02, 2018

            Love it night day difference

            Recently changed my factory with 98,000 miles the car feels way more aggressive..just be careful when gapping the spark plugs


            Year: 2012 Submodel: GT

            Helpful (16)

          • 1/5

            December 28, 2017

            Save your money

            Install on took 40 mins. But my stock ones with 55,xxx miles out performed these, save your money and buy the ngk set. After install, car lags and just doesn't seem right, ordering the ngk this week.


            Year: 2011 Submodel: GT

            Helpful (21)

          • 5/5

            December 12, 2017

            Spark plug change

            Great set of plugs for a good price, with quick delivery


            Year: 2013 Submodel: GT

            Helpful (13)

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