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Ford Motorcraft OEM Spark Plugs (99-01 Cobra; 03-04 Mach 1)

Market Price $33.99 You Save 12% ($4.00)
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  • Item 52919

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Ship to: Ashburn - 20149
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    Features & Details

    • Direct OEM Replacement
    • Copper Core with Iridium Tip
    • Motorcraft Part# SP-433
    • Fits 99-01 Cobra and 03-04 Mach 1 Mustangs
    • Sold as a Set of 8
    Routine Maintenance. It is recommended to replace your old spark plugs every 30,000 to 45,000 miles as part of your Mustangs routine maintenance. Old, fouled, or damaged spark plugs can rob your Mustang of power and fuel efficiency, so replace them with a brand new set of genuine Ford Motorcraft OEM Spark Plugs to regain your pony's lost power.

    OEM Quality Materials. Ford Motorcraft Spark Plugs feature a copper core for its superior electricity conductivity and a durable iridium tip to assure a strong spark to keep your stang running at it's peak efficiency.

    Fitment. This set of eight (8) Ford Motorcraft OEM Spark Plugs are specifically designed as a direct fit replacement for the 1999 to 2001 SVT Cobra and 2003 to 2004 Mach 1 Mustangs equipped with a 4.6 DOHC V8.

    Fitment: Details



    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (8) Spark Plugs
    Installation Info
    Tech Specs

      Customer Photos (1) Submit Your Photo

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        Questions & Answers (3)

        3 Top Rated Questions

        What is the heat range for these? I'm looking at spraying my 4v and was told i needed a 1 step colder plug. Thx

        • The Ford Motorcraft OEM Spark Plugs are manufacturer heat range 3

        Helpful (1)

        accidentally ordered these for my 2000 gt v8 4.6 sohc will they still work for that rig?

        • Unfortunately, these will not work with a 2000 GT and are designed to work with only the 99-01 Cobra's and 03-04 Mach 1 models. Please reach out directly to our customer service department either by chatting in with our live support team or by giving us a call at 1-877-887-1105. We are open every day at 8:30AM EST until11:00PM EST.

        Helpful (0)

        Will the sp-433 ford motorcraft spark plugs work on my 2005 v6 ford mustang

        • These Ford Motorcraft OEM Spark Plugs would not work with your 2005 V6 Mustang. To stick with Ford Motorcraft spark plugs, you would want to look for the SP498 plugs, which we do not offer at this time

        Helpful (0)
        Post Your Question

          Customer Reviews (14) Write a Review

          Overall Rating 5

          out of 5 stars

          Installation Time:Less than 1 Hour

          • Performance Gain 4.272727 4.3
          • Fit 5 5

          • 5/5

            Installation Time: Less than 1 Hour

            July 27, 2019

            OEM plugs

            No real performance gain when you stick with OEM plugs other than gaining back what was lost over time. That being said I put these in with new Ford Performance coils and a new OEM fuel filter and the difference was night and day.


            Year: 2003 Submodel: Mach 1

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            April 19, 2018

            Work great

            These ford oem spark plugs work great in my 2004 Mach 1, perfect fit easy to install


            Year: 2004 Submodel: Mach 1

            Helpful (4)

          • 5/5

            Installation Time: Afternoon

            November 08, 2017

            Great Choice!

            As we all do - I fretted and debated the decision - which plug to use in my Mach 1. Aftermarket - or OEM? After much thought - went with the OEM. These are great plugs - and the car runs much smoother, has regained lost power and mileage. No regrets with these - and I'm set for many more miles!


            Year: 2003 Submodel: Mach 1

            Helpful (5)

          • 5/5

            Installation Time: Less than 1 Hour

            June 21, 2017

            Just what I wanted

            Was due for new plugs and Wanted to go with oem motorcraft plugs since my motor is stock with bolt ons. More then anything I wanted to do preventative maintenance. Make sure to gap your plugs to spec. Only thing I notice is my car idles a hair smoother. Old plugs where still in pretty good shape. American muscle makes getting my mustang parts convenient and easy as always, and these customer review's on the products gives you confidence on what to purchase for your set up, and know what to expect. I recommended going with oem plugs unless on the bottle or boost.


            Year: 2001 Submodel: Cobra

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            October 25, 2016

            Runs like a charm

            Had a slight misfire but once these got put in my mach 1 runs great again


            Year: 2003 Submodel: Mach 1

            Helpful (6)

          • 5/5

            Installation Time: Afternoon

            July 18, 2014

            OEM Spark Plugs

            Decided to stick with the OEM Ford Motorcraft spark plugs due to never having an issue and you can go wrong with OEM parts. Install was a breeze and no to difficult to install. Just take your time and you will encounter no issues like i did. Definitely recommend for you stock stang.


            Year: 2004 Submodel: Mach 1 IL

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            January 18, 2013

            Great product!

            I was very satisfied with this product. OEM motorcraft is the best way to go. Great price, way cheaper than the dealer.


            Year: 2003 Submodel: Mach 1

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            July 02, 2012

            Stock plugs

            These stock plugs worked great on my car..idles smooth and keeps my Mach 1 running at full force..highly recommend others to buy this product..


            Year: 2004 Submodel: Mach 1 Las Vegas Nevada

            Helpful (6)

          • 5/5

            Installation Time: Afternoon

            March 24, 2012

            Spark plugs DOHC installation tips

            My vehicle is a 2003 Mach 1 with 30,000km. I have the basic bolt ons for max performance. JLT Ram air, twin 65mm BBK throttle body, Magna flo exhaust with -X pipe, SCT programmer from Bama,I also have the 80,000v coils from Weapon X, and I had purchased their plugs too. All this basically happened to the car around 25,000kms. Those plugs or any plugs just do not last with those coils, the coils do make a difference but at the price of plugs, so with that said you may as well burn up the stock plugs at $3 a plug as opposed to $10 plugs they last as long. Also before removing the plug have your engine cold (alluminum heads) and use your compressor and blow out the hole little rocks and sand can and do get trapped in there. When installing the new plug put some nickle anti seize on the threads and do not over tighten snug them up and 1/8 turn to tighten no more.


            Year: 2003 Submodel: Mach 1 Edmonton, Alberta

            Helpful (9)

          • 5/5

            Installation Time: Less than 1 Hour

            January 27, 2012

            Great replacement plugs

            Bought these plugs to replace the nkg that were in my car hoping to fix a slight miss problem. Plugs solved the problem, fit great, helped the miss, and improved my gas milage


            Year: 2003 Submodel: Mach 1 Mississippi

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            September 01, 2011

            Maintanance is Key!

            Proper preparation prevents poor performance, this is what basic maintenance tune up items are for. Replacing your spark plugs will prevent power loss as will regular oil and filter changes. No real performance gains that I could notice but didn't loose performance.


            Year: 2001 Submodel: Cobra Malven, PA

            Helpful (5)

          • 5/5

            July 22, 2011

            Motorcraft spark plugs

            I had put in Autolite plugs at 60K, started having miss firing problems. Just installed a set of Motorcraft plugs and it is running so much better.

            wayne Klaick

            Year: 2001 Submodel: Cobra

            Helpful (5)

          • 5/5

            April 09, 2011

            Better Than NGK

            When Replacing things like coil paks, fuel injectors, maf, and other such items; fords products are superior to everything else. The Same thing with these spark plugs, you want something thats going to burn fuel cleanly and last 50k miles, then buy motorcraft, best of the best and you're not wasting an extra


            Year: 1999 Submodel: Cobra

            Helpful (11)

          • 5/5

            April 07, 2010

            Just doin a 50k mile tun-up

            Plugs work great!


            Helpful (5)

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