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Ford Motorcraft OEM Spark Plugs (99-04 GT)

Item 52917
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      Product Information

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


      • 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: 1999 2000 2001 2002 2003 2004 Details

      MPN# SP-493

      CA Residents: WARNING: Cancer and Reproductive Harm -


      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)

      Questions & Answers (9 answers)

      5 Top Rated Questions

      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 (3)

      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)

      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

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (8) Spark Plugs

      Tech Specs

      Will It Fit My Mustang

      • Bullitt - 01
      • GT - 99, 00, 01, 02, 03, 04

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