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Ford Motorcraft OEM Spark Plugs (99-04 GT)

Item 52917
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    Features & Details

    • Direct OEM Replacement
    • Copper Core with Platinum Tip
    • Motorcraft Part# SP-493
    • Fits 1999-2004 4.6L SOHC GT 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 platinum 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 2004 GT Mustang equipped with a 4.6 SOHC V8.

    Fitment: Details

    MPN# SP-493

    CA Residents: WARNING: Cancer and Reproductive Harm -

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

      Customer Photos (3) Submit Your Photo

      View All 3 Photos

        Questions & Answers (9)

        5 Top Rated Questions

        What is the difference between these and the Ford SP-505 spark plugs? Are SP-493s or SP-505s recommended for GTs and which has a lesser probability of being shot out by the engine and causing heads to need replaced?

        • For the Ford Motorcraft OEM Spark Plugs, the SP-493 is an OEM plug from the 99-04 GT. the SP-505 is of the same design, but is 1 heat range lower. Neither would have any reduction in the spark plugs being shot from their hole, as this is caused by a failure in the head's soft aluminum threads, which are not as strong as the steel threads on the spark plugs. On many performance applications, steel inserts are installed in the head to replace the aluminum threads to prevent this, though this requires significant modifications to the heads.

        Helpful (1)

        should I get these ford motorcraft oem plugs or NGK G-Power Platinum Performance spark plugs

        • I would absolutely recommend Motorcraft and be sure to install them properly. Blowing out spark plugs due to improper installation or some aftermarket plugs is very common in these engines.

        Helpful (1)

        Hello, it's me, AL. My question is Will these plugs fit a 2001 mustang gt 4.6 DOHC ?

        • These will not fit DOHC vehicles.

        Helpful (0)

        What gap should my 2003 ford mustang gt have in these spark plugs

        • These spark plugs should be gapped at 0.052-0.055 for your application.

        Helpful (0)

        Will this fit a 2002 Ford Mustang 3.8L?

        • Unfortunately these spark plugs will not work with the 3.8L V6. Only the 4.6L V8 models.

        Helpful (0)
        Post Your Question
        4 More Questions
        Will a Motorcraft SP479 plug be ok on a 2003 Ford mustang GT? 1 answer
        What is the heat range when using the motorcraft spark plug 1 answer
        What heat range are these spark plugs 1 answer
        Do i have to gap these plugs i bought from u Ford Motorcraft OEM Spark Plugs (99-04 GT) 2 answers

          Customer Reviews (57) Write a Review

          Ratings Summary

          4.9 out of 5 overall rating from 57 customers

          Installation Time: Afternoon

          Installation Cost: 0-$100

          • August 29, 2019

            5 2002 GT - Yankee Installation Time: Less than 1 Hour

            Great products

            Good customer service the product was the exact part I needed and good prices thank you American Muscle

            Helpful (0)
          • May 17, 2019

            5 2004 GT - Joseph Installation Time: Afternoon

            04 mustang gt

            Always go with oem Motorcraft if your not boosted. They work the best and along with msd blaster coil on ignition packs I fixed the misfire and really awoken the beast!

            Helpful (0)
          • February 21, 2019

            5 2002 GT - vasmar Installation Time: Less than 1 Hour

            Great Plugs

            Took awhile for them to get to my house because they were in back order however, fit perfectly and really woke my pony up.

            Helpful (1)
          • January 07, 2019

            5 2004 GT - TGoodnow Installation Time: Afternoon

            Works Great

            Really satisfied with the purchase. Installed myself in a couple hours with basic hand tools. Spark plugs work great and as expected.

            Helpful (2)
          • November 04, 2018

            3 2000 GT - CarterMade Installation Time: Less than 1 Hour


            They worked fine.........................................

            Helpful (2)
          • October 23, 2018

            5 2003 GT - NicW Installation Time: Less than 1 Hour

            Nicholas Walter

            Worked well,easy install well made spark plugs, would recomend

            Helpful (2)
          • September 18, 2018

            5 2002 GT - outsidecloud Installation Time: Less than 1 Hour

            Idle problems/misfire ? Here's your email answer

            Easy install ! No issue what so ever , a great replacement to your stock spark plugs

            Helpful (3)
          • August 11, 2018

            5 2003 GT - ChuckieT Installation Time: Less than 1 Hour

            Ford OEM.

            The factory parts are so much better than the aftermarket parts because they fit flush and work so good.

            Helpful (4)
          • August 09, 2018

            5 2002 GT - 02stang Installation Time: Afternoon

            Just what the stang needed!

            Brings back the peppyness to your stang. You can feel how smooth your engine starts after the change.

            Helpful (4)
          • July 28, 2018

            5 2002 GT - Rob Installation Time: Shop Install Installation Cost: 0-$100

            Motorcraft plugs


            Helpful (3)
          • May 07, 2018

            5 2003 GT - Pollock Installation Time: Less than 1 Hour

            2003 Saleen S281 Mustang

            Can't ever go wrong with OEM sparkplugs. Perfectly gapped, fit and finish is beautiful, and made my Stang idle smoother for sure. Power feels great up to redline. Will only use these plugs for the rest of the cars life.

            Helpful (7)
          • May 02, 2018

            5 2003 GT - JardoO Installation Time: Full Day

            plugs and coils

            Ah!! What can you say about plugs. They work or they don't work. These work great and the engine starts much faster. Install is another story. Not the plugs falt

            Helpful (5)
          • February 16, 2018

            5 2002 GT - DaltonJ Installation Time: Less than 1 Hour

            2002 Ford Mustang GT

            Installed these plugs with Accel Coil Packs and it fixed my horrible misfire. They come pre-gapped but check the gap on them anyways to make sure. Thanks American Muscle!

            Helpful (6)
          • January 22, 2018

            5 2000 GT - SeanC Installation Time: Less than 1 Hour

            Nothing beats oem.

            These plugs are perfect for anyone who drives their mustang daily and has no reason to use aftermarket plugs. My car is only mildly modified and has 183k on the clock. This thing has never idled so smooth on an initial start up in years. Way better than the autolite plugs that the previous owner had in there.

            Helpful (5)
          • November 30, 2017

            5 2001 GT - BlackMamba

            Factory Perfection

            Very reliable and long lasting plugs. Factory perfect and gaps we're right on.

            Helpful (5)
          • September 13, 2017

            5 2000 GT - BreG Installation Time: Less than 1 Hour

            Great price

            Sorry I have no picture to provide. My car has been hesitating when pushing the gas peddle so I changed the spark plugs along with purchasing new coils as well. After installation my car is no longer hesitating. I wasn't trying to brake the bank so I purchased these bad boys.

            Helpful (7)
          • August 30, 2017

            5 2002 GT - StevenM Installation Time: Less than 1 Hour


            You can never go wrong with these spark plugs. Fast shipping and great customer service. Thanks AM

            Helpful (4)
          • July 29, 2017

            5 2001 GT - RichM Installation Time: Less than 1 Hour

            Can go wrong with Motorcraft!

            Had a misfire at low rpm under load in overdrive on my 01 Gt. Put a new set of S R coils on and still had the misfire put the new plugs in and misfire went away! Car only has 78,000 miles in it and previous owner said the plugs were changed which probably wasn't true. Old plugs looked good to the eye but obviously we're weak. The car completely woke up and runs smooth as silk! If there's any question grab these they are cheap insurance and easy to change.

            Helpful (5)
          • July 23, 2017

            5 2003 GT - Justin Installation Time: Afternoon

            Motorcraft OEM spark

            Had a misfire cylinder 1 and then another in cylinder 2. Grabbed theses plugs as apart of a 160k mile tune up (coils, alternator, battery) and havent had any issue since. Not a difficult task to install and with the right garage/tools/support likely a hout or less to complete but it was worth taking the time for me to not make any errors with removing the plugs... And the coils have to come out so why not do new there too. (About 2 hours for a casual approach.)

            Helpful (5)
          • July 09, 2017

            5 2003 GT - STEELERStang Installation Time: Less than 1 Hour


            As expected Motorcraft is a good product and the install went as expected.

            Helpful (4)

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