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Ford Motorcraft OEM Spark Plugs (05-08 GT)

Item 52923
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      Review & Installation Video

      Product Information

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


      • Direct OEM Replacement
      • Copper Core with Platinum Tip
      • Motorcraft Part# SP-514
      • Fits 2005-2008 GT's w/ Black Coil Boots
      • 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.

      Application. This set of eight (8) Ford Motorcraft OEM Spark Plugs are specifically designed as a direct fit replacement for the 2005 to 2008 GT Mustangs equipped with

      Black coil boots only.

      Fitment: 2005 2006 2007 2008 Details

      MPN# SP-514

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (100+)

      Write a Review

      Ratings Summary

      4.8 out of 5 overall rating from 100+ customers

      Installation Time: Afternoon

      Installation Cost: $100-$250

      • March 09, 2020

        5 2006 GT - King30300 Installation Time: Afternoon

        Life saver

        These brought the power back out of my car they’re definitely worth it

        Helpful (0)
      • September 29, 2019

        5 2007 GT - EricDraven Installation Time: Afternoon

        Good quality

        It was relatively easy to install. Noticeable change in performance.

        Helpful (1)
      • July 31, 2019

        5 2008 GT - Michael Installation Time: Afternoon

        tune up

        Since I bought my GT used, I had no idea if or when the plugs were replaced or turned up, bought the OEM plugs and changed them out as the old did look quite worn and , easy replacement and now she's runs smoother and accelerates much better. It took a couple of hours only because I soaked the old ones for about an hour before pulling them out to ensure they didn't break in two.

        Helpful (0)
      • June 18, 2019

        5 2007 GT - JoeR007 Installation Time: Less than 1 Hour

        Got here pretty quick

        Work fine just need my new set of msd coils and should run better

        Helpful (0)
      • June 10, 2019

        4 2006 GT - Bubba12345 Installation Time: Afternoon

        Buy the extraction tool, old plugs will break!

        I followed the removal procedures according to the Ford TSB as well as watching YouTube videos. 2 out of the 8 plugs broke in the cylinder head! Have the extraction tool on hand... it’s worth it even if you don’t break any plugs. New plugs installed with ease! Car started right up. 2006 GT w/ 57,000 miles.

        Helpful (3)
      • May 27, 2019

        5 2006 GT - GregA

        Great spark plugs

        Great fit and easy install. Thanks for carrying the OEM parts at AM.

        Helpful (3)
      • May 25, 2019

        3 2006 GT - Geoff Installation Time: Less than 1 Hour

        Worked good

        Replaced plugs and ended up having to buy two that were bad out of the box

        Helpful (0)
      • April 28, 2019

        5 2006 GT - Jerone Installation Time: Afternoon

        Works great

        Had a misfire that was getting worst these plugs took care of that.

        Helpful (0)
      • April 23, 2019

        2 2007 GT - DominiqueT

        Spark plugs burnt out in a month

        Had these installed and they broke in a month well 3 of them , terrible product .

        Helpful (5)
      • April 18, 2019

        5 2006 GT - KurtS Installation Time: Afternoon

        plugs made a huge difference

        the car feels like a sports car should now. big improvement. well worth it. but get the tool , I broke four old ones taking them out, easy to get out if you have the proper tool.

        Helpful (3)

      Questions & Answers (17 answers)

      5 Top Rated Questions

      Are these spark plugs a one piece designed that will NOT break in two pieces when removing ?

      • These spark plugs are going to be the same as the OEM plugs, which are the two piece design.

      Helpful (7)

      Are these MOTORCRAFT spark plugs the SP514 updated design PZH1F? This new design from Ford is supposedly stronger with less chance of breakage.

      • The Ford Motorcraft OEM Spark Plugs are going to be the SP-514 model.

      Helpful (4)

      What do you gap these too?

      • They will be gapped as outlined in your owner's manual, please refer to that for specifics.

      Helpful (3)

      will these plugs work with msd coil on plug kit?

      • Hi, These plugs will work with any coil on plug set for the 05-09 Mustang.

      Helpful (3)

      What size socket do I need for Ford Motorcraft OEM Spark Plugs (05-08 GT)?

      • 9/16 deep well socket plug or regular deep well, but you will need a pair of long needle nose pliers to pull the plug out.

      Helpful (2) Show 2 more answers
      Post Your Question
      10 More Questions
      Do these plugs come pre gapped or do I need to gap them before install 1 answer
      Would these plugs work with ford performance hot rod cams or what plugs should I get? 0 answer
      If I have a 2011 supercharged gt which spark plugs will be the best option for me??? Thank you... 1 answer
      If I plan on adding nitrous to my 2006 Mustang GT soon, should I buy these or the Brisk Silver Racing spark plugs that are recommended for up to 450 flywheel hp? Thanks! 1 answer
      Every dealer I called said Ford SP 547 superceed the SP 514 and that it is the correct plug for my 2005. Why are these still available if the correct plug us the SP 547? 1 answer
      I purchased these plugs and now it’s time to replace them but I’ve tried everything to take these out and nothing bought the deep 9/16 socket from auto zone and when I attempt to turn the socket it doesn’t grip on there to turn and take off I’m having so much trouble taking these off my car any suggestions? 1 answer
      Would you say these are a hot or cold plug, on the standard 4.6 engine a hot plug would be used and on a twin turbo or supercharged engine I believe a colder plug would be used, is this correct? Or will this plug do both ranges? Regards Pete. 1 answer
      What is the torq lb on the spark plugs for a 2005 mustang gt 4.0L engine 1 answer
      How much the wieght for 8 spark with the box ? 1 answer
      Are the plugs pre-gapped? If so what is the gap? 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 - 08
      • GT - 05, 06, 07, 08

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