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Ford Motorcraft OEM Spark Plugs (05-08 GT)

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  • Item 52923
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    Features, Video & Details

    • 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

    Review & Installation Video

    Review & Install Video

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

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    Questions & Answers (10)

    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 (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)

    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.

    • The Ford Motorcraft OEM Spark Plugs are the same heat range as the stock spark plugs that came in your vehicle. A plug one or more heat ranges colder would be required for most supercharged,turbocharged or nitrous applications, as well as highly modified naturally aspirated setups.

    Helpful (0)

    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 (0)

    What is the torq lb on the spark plugs for a 2005 mustang gt 4.0L engine

    • You will want to torque these Ford Motorcraft OEM Spark Plugs and other plugs to 33ft-lbs on 4.6L GT's. These plugs will not work with a 4.0L V6, however the torque specs or 4.0L's are 25ft-lbs.

    Helpful (0)
    Post Your Question
    5 More Questions
    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
    I have a couple questions regarding these plugs 1) Are these 1 piece? I don't want to put the 2 piece back in and run the risk of have the carbon snap off issue. 2) Do you really need a special 9/16 plug socket or will a regular deep socket work? Thanks in advance. 2 answers
    What size socket do I need for Ford Motorcraft OEM Spark Plugs (05-08 GT)? 3 answers
    how do you tell if your mustang 2008 has the brown or black coil boots? 3 answers

    People Who Bought This Item Also Bought

    Customer Reviews (100+) Write a Review

    Overall Rating 4.9

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:$100-$250

    • Performance Gain 4.225225 4.2
    • Fit 4.927928 4.9



    • 5/5

      Installation Time: Afternoon

      July 05, 2018

      Updated OEM plugs

      Motorcraft SP-547 is the updated plug that superseded SP-514. Please note that because that's what you will receive when you order this set, and it's correct. If you haven't done plugs on your Mustang before or it's been a while, start by reading the Ford Technical Bulletin 08-7-6. Have an extraction kit on hand in case any break. Also, per the TSB, get some Nickel Anti-Seize and coat the body section only when installing the new plugs. I do mine every 30k miles now and haven't had any break since following the TSB. Good luck!

      Roush07VT

      Year: 2007 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      June 29, 2018

      Back to new

      These plugs always run nice in my car with MSD coil paks, Car was running rough and i install new plugs,(Here 2 plugs were loose. after install ran like i put a new engine in it.

      robert

      Year: 2008 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      June 07, 2018

      Spark plugs

      Great product, motorcraft is the way to go, these plugs are non adjustable so you do not have to worry about gapping them. Car was misfiring and now it runs a lot smoother and noticed better gas mileage. Paired with the msd coils definitely feel better throttle response. Thanks again AM.

      SarahB

      Year: 2006 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      May 14, 2018

      works great

      tried other plugs, but nothing beats the Ford plugs in a Ford motor.

      CharlesH

      Year: 2006 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      May 14, 2018

      Works good

      Works good............. needed a tune up these work just fine

      AlexM

      Year: 2006 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      April 22, 2018

      A Lot More Pep

      Even though car only has 25K, I thought that after thirteen years I should change out the plugs, since I was also installing ACCEL Super Coil On Plug Kit. I took advice of reviewers and went with the Ford OEM plugs. Seems to have been a good choice. So far, no issues and the car runs great! Certainly a lot more "pep" than before. I was also elated to find that the original plugs had virtually no carbon build-up. All the mods to my engine are the "bolt-ons" (CAI, 62mm throttle body, headers and exhaust, under-pulley kit, 'Bama 93 tunes) plus lotsa suspension work. Car is running better now than it ever has!

      GFSNTS

      Year: 2005 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      April 21, 2018

      Best purchase so far

      I had some power surging for some time and couldn’t pin point it but this cleared it up (also their is a tool to remove spark plugs that break off in the engine fyi)

      NicolasL

      Year: 2006 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      April 17, 2018

      They do the job

      After 117,000 miles I replaced factory spark plugs with these. They work as they should, we’ll packaged and quick delivery

      SkylarF

      Year: 2007 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      April 13, 2018

      Perfect

      My pony is running Soooooo much better now. I had put another brand of spark plugs in just last year and one of them had already cracked, never again.

      TinaL

      Year: 2005 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      April 04, 2018

      Fixed My Hesitation

      Prior to having these plugs installed my mustang would hesitate/surge from 4.5-5.5k rpm under heavy acceleration. I did an oil and filter change and put these spark plugs in and my mustang now runs perfectly, No more hesitation just a whole lot of smiles.

      Jesse06GT

      Year: 2006 Submodel: GT

      Helpful (3)

    • 1/5

      March 27, 2018

      bad gap

      didnt have any luck with them they made my05 gt mustang ran worst ,had to go to a set of e3 plugs

      EddieN

      Year: 2005 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      March 16, 2018

      Great price

      Its a good product easy to install. A its for a good price.

      RobertoH

      Year: 2008 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      February 20, 2018

      engine bay upgrade

      great price for these plugs but removing the original plugs is difficult and time consuming

      SteveM

      Year: 2008 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      February 20, 2018

      CHANGE YOUR PLUGS

      Ford says at 100,000....I changed mine at 90k and it really woke u the car....much smoother from low rpm, and more fun to drive.

      Duckman

      Year: 2005 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      February 19, 2018

      Spark plugs oem

      Spark plugs work great! Changed my old ones out and put these and runs way better!

      RaulS

      Year: 2006 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      January 30, 2018

      Great replacement

      Great price compared to local autopart stores in my opinion

      Jony

      Year: 2007 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Less than 1 Hour

      January 07, 2018

      Spark plugs

      Replaced these and the coils to stop rough idle and hesitation from the engine. Car now runs perfect.

      TramaineW

      Year: 2006 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      December 22, 2017

      Perfect

      Matched these with some MSD blaster coil packs , soaked the plug in PB blaster for about an hour an a half and kept reapplying it. All 8 plugs came out jus fine no breaks new plugs and packs went in smooth. This fixed my rough idle and I think it helped with RPM hang as well. Doesn’t happen half as much as it used to

      DylanR

      Year: 2007 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      November 01, 2017

      Good factory plugs

      These are the stock plugs that came with the car. Cheaper at American Muscle

      joe

      Year: 2005 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Weekend

      October 22, 2017

      Mustang GT OEM Spark Plugs

      I decided to replace the plugs in my 2006 Mustang GT. This was first replacement. The car has 82,000 miles. Getting the old plugs out is tricky and takes a lot of patience to avoid breaking off the tip in the engine. I decided to go with OEM plugs after reading up on the subject. American Muscle parts provided good value. Definitely noticed increased performance with the new plugs and coils.

      RobertW

      Year: 2006 Submodel: GT

      Helpful (3)

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