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Ford Motorcraft OEM Spark Plugs (05-08 GT)

Market Price $99.99 You Save 15% ($15.00)

$84.99

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  • Item 52923
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Features & 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
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

What's in the Box
  • (8) Spark Plugs
Installation Info
Will it fit my Mustang?
  • GT - 05, 06, 07, 08

Most Helpful Reviews

5/5
A must buy...

My Mustang has over 50k on her and it was time to change the plugs. I searched several places for OEM plugs, but everyone wanted way too much. AM saved me over $30 for the set, a great bargain. I did run ...

Read More
Helpful (1)

5/5
Great plugs: Be sure to get some Permatex 77134 too!

Had some issues with shop installed plugs. I personally put these in with some nickel anti-seize (Permatex 77134) per the TSB 08-7-6. This resolved the problem. Not sure the issue with the plugs the ...

Read More
Helpful (1)

Overall Rating 4.9 out of 5 stars
Read All 86 Reviews

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5 Questions / 10 Answers

Ask a Question

how do you tell if your mustang 2008 has the brown or black coil boots?

al66

  • If your Mustang was built after November 30, 2007 Ford changed designs of the spark plug. They are a completely different thread than used from 2005 until the transition sometime in 2008. If your 2008 Mustang was built in 2008 you can identify which plugs you have by looking at the boot color of the coil pack. Black boots are used in 2005 to mid 2008. Brown boots are mid 2008 and newer. You need to remove one individual coil pack located along the intake manifold an head. There should be an electrical connection to pop off and one single 8 mm screw holding it in place. Be sure to blow and dirt off the area before removal.

    Mach01

    Good Answer (2) (0)

Show 2 more answers Question Resolved

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

mustangt08

  • 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.

    JoeStang06GT

    Good Answer (2) (0)

Show 2 more answers Question Resolved

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.

PatStang

  • I used a standard 9/16 deep well socket without any issues.

    slandis3

    Good Answer (0) (0)

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How much the wieght for 8 spark with the box ?

Hamad85

Answer This Question I need this answered (0) (0)

Are the plugs pre-gapped? If so what is the gap?

vistabluevert

  • Yes, they come already gapped from Ford. Ford has a note on the plug boxes stating not to adjust the gap.

    Redfire07GT

    Good Answer (3) (0)

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Customer Reviews (86) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Performance Gain 4.151515 4.2
  • Fit 4.878788 4.9



  • 5/5

    Installation Time: Less than 1 Hour

    June 03, 2016

    Great plugs: Be sure to get some Permatex 77134 too!

    Had some issues with shop installed plugs. I personally put these in with some nickel anti-seize (Permatex 77134) per the TSB 08-7-6. This resolved the problem. Not sure the issue with the plugs the shop used, but these plugs from AM were perfect. Be sure to use the nickel on the ground shield and a bit on the threads. If you are removing your original plugs, be advised that they often break off in the cylinder head. The shop doing my removal broke 4 of 8 and had to use the Lisle extractor. I recommend reading the TSB-08-7-6 or doing some research before you decide to start this project. These plugs resolved issues I was having with uneven response and running too rich. Now the car runs perfect. Hopefully they do not stick in the head like the originals.

    amp281

    Year: 2006 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Weekend

    December 08, 2013

    Good spark plugs

    This spark plugs are great for the price. I recommend these to any one .One piece of advice though never wait to change these out when u have over 100,000 miles, pain in the butt to take off..other than that great product great price thanks....

    James34

    Year: 2006 Submodel: GT Dallas, TX, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    May 24, 2013

    A must buy...

    My Mustang has over 50k on her and it was time to change the plugs. I searched several places for OEM plugs, but everyone wanted way too much. AM saved me over $30 for the set, a great bargain. I did run into one problem, relating to removal of the old plugs. Since I have over 50k on the car the plugs were less than easy to remove, I even had one break off in the head. Luckily this is a fairly common problem so I ordered the lisle plug removal tool and the plug came out just like all the videos and reviews of this tool said it would. The total time to remove and install the new plugs was over 2 hours, but the performance of the car is much improved. The car idles a ton smoother and is just nicer to drive. I'm very happy with spark plugs and AM for their awesome price.

    JoeStang06GT

    Year: 2006 Submodel: GT Red Hill, PA, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    August 01, 2012

    Doesn't get any better..

    I was quite puzzled about which plugs I wanted to have put in, but after looking around I decided to stick with the stockers. Very high quality plug. The dealer was able to get all 8 out without trouble to my surprise. Car had 55k on it and always ran high quality fuel. Tech said they were the cleanest ones he'd taken out yet.

    Ponyjr

    Year: 2006 Submodel: GT Ohio

    Helpful (1) (0)

  • 4/5

    Installation Time: Afternoon

    August 07, 2012

    American Muscle's GREAT customer service comes through again!

    I drive an 06 GT as an every day driver, and it recently hit 70k miles. When I was on the highway for a road trip, I got a misfire code so I figured it was time for a tune up. I researched what everyone said about the OEM plugs breaking off and needless to say, after a 2 hour soak of PB Blaster I still only got 4 out of the 8 out cleanly. I ordered the removal tool online and it worked like a charm... But that's all besides the point! lol So I ordered these because of the amazing reviews and the price! WELL... we installed them, went to fire it up, and it ran horrible! At idle it sounded like I had a performance cam installed... I was getting misfire codes on 4 cylinders. I could not figure out the problem... Finally, after some guess and check, and putting the old plugs back in where there were misfires, it ran normal again. So I immediately called AM to see what they could do to help. They sent out a whole new set of 8 that same instant and they made it out to me in a day and a half! I sent back the old ones with no cost to me! So fingers crossed, we installed the new set of 8 and... WOW! She was purring like a kitten... The power I gained back just from the plugs is amazing. Had I known that's where a lot of my power drain had been, I would've done this 20k miles ago! Don't wait till the 100k miles like the manual suggests. You'll be in a world of carbon deposit hurt! Have to thank the staff again at AM... Hands down the best customer service I've EVER experienced!

    Rune81

    Year: 2006 Submodel: GT Romeoville, IL, USA

    Helpful (9) (0)

  • 5/5

    Installation Time: Afternoon

    August 27, 2011

    Best price around for stock replacement, but be prepared to spend some time!

    American Muscle by far had the best price and fast, free shipping for these plugs. That being said, I've been a mechanic for over 20 years and this spark plug change was the most difficult ever! Be sure to get a copy of Ford TSB 08-1-9 and purchase Lisle tool 65600 before you start. My 2007 Mustang GT had 110,000 miles and gas mileage hadn't been great lately. I removed the coils from the driver / passenger banks of the motor and blew out all debris with compressed air, then tried to remove the first plug, but it wouldn't move. I sprayed WD40 and managed to remove the hex and threaded portion of the spark plug. The remainder of the plug (ceramic portion) did not come out. What happens over time is the carbon between the cylinder and plug seize it in place, due to such a close fit on the 3V heads. The plug ends up breaking and you need the Lisle tool to get it out. The tool gets the broken plug out in about 5-10 minutes. The TSB recommends backing the spark plug out 1/4 turn then spraying carburator cleaner into the spark plug access hole, until it covers the hex and allow to sit for 20 minutes. The cleaner breaks down the carbon and allows removal of the plugs without them breaking in the head. The Lisle tool was abou $60, but I didn't have to remove the head. Plan on about 3 of the 8 plugs breaking in the head. Have fun!

    Mach01

    Year: 2007 Submodel: GT Milltown, NJ

    Helpful (13) (2)

  • 5/5

    Installation Time: Less than 1 Hour

    May 14, 2014

    Removed/Installed with no issues

    After learning that the local dealership wanted $650.00 to replace the plugs in my 'Stang, I decided to do the job myself and replaced mine at a little over 75k miles. On the advice of a Ford mechanic I ran 3 tanks of gas treated with Lucas gas treatment through the engine prior to removal. There were deposits on the metal shroud(the part prone to break), but the Lucas treatment did an excellent job and reduced the deposits to a powder soft coating that allowed the plugs to come out without issue. At 75k miles, I noticed the electrodes had worn down considerably, and I also installed the Accel coils during reinstallation. With the combined effect of the fresh gaps of the new plugs, and the addition of the Accel coils, I noticed a considerable power gain after the initial test drive with no error codes whatsoever. Between the great price of these plugs from AM, the Lucas gas treatment, a tube of anti-seize and dielectric grease for the new coil boots, my plug replacement cost me a grand total of a little over $100.00, a far cry from what the dealer wanted.

    SatinStanced

    Year: 2007 Submodel: GT Dalton, GA, USA

    Helpful (4) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    July 30, 2012

    Great Pricing

    Got my spark plugs installed by Ford Dealership. Ford was going to charge me $200.00 for the spark plugs I got them here for $69.99. I plan to come back here for all my parts. American Muscle...you are the best!

    plaidmouse

    Year: 2007 Submodel: GT Atlanta, GA

    Helpful (4) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    July 14, 2012

    OEM Plugs

    There OEM, dont expect any HP gain. However they are good quality and much cheaper than any auto retail store.

    JimmyJonJunior

    Year: 2006 Submodel: GT

    Helpful (4) (0)

  • 5/5

    Installation Time: Shop Install

    March 15, 2012

    OEM or Bust

    I purchased these plugs along with a fuel filter to tune up my GT. After reading a ton of forum posts on how difficult it was to remove the original plugs, I'm glad I let my dealer do the job right! After getting her back today, I can honestly say it was money well spent. $69/set on AM versus $25/plug @ the dealership! No brainer! If you are on the fence about aftermarket plugs vs. OEM, Go OEM. These are THE only choice when it comes to spark plugs. This is what the doctor ordered!

    JonnyO

    Year: 2005 Submodel: GT Chicago, IL

    Helpful (4) (0)

  • 5/5

    June 20, 2011

    spark plugs

    The plugs for this car are expensive from Ford$25 each,got them from you on closeout for $69for all 8,great deal thanks.

    randy heidt

    Year: 2007 Submodel: GT

    Helpful (4) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    June 21, 2012

    oem quality

    I bought these to replace my original oem plugs at 45000 miles. The old plugs looked great when i removed them, showing that the oem quality is great. Also, I did not have any issues removing the old plugs. One of the few times when I'd say oem is better than aftermarket.

    Simon0791

    Year: 2007 Submodel: GT

    Helpful (2) (0)

  • 5/5

    October 15, 2010

    oe spk plg replacement

    Just as described--direct replacement.I had never changed plugs on a 3V before. Plug gap was within spec on all of them and it no diff from what I,ve been changing for the last 40 years.

    Mark Haywood

    Helpful (2) (0)

  • 5/5

    April 04, 2010

    mustang

    just what needed!

    MARCO

    Helpful (3) (1)

  • 5/5

    Installation Time: Less than 1 Hour

    April 24, 2012

    Best price for OEM Spark Plugs

    After finding prices for plugs ranging from $17.99 at the dealer to $12.99 at Autozone I decided to check AM, and I'm very happy i did. I'm not a mechanic but always worked on my cars since i was 15. I was scared when i read the plugs breaking so i added a little lubricant before taking each plug out and none broke, all came out easy. My car has 61k for miles and they were original plugs desperately needed to be changed. Only suggestion; customer service reps need to understand basic replacement items. I asked if they came with a pre-gap, he said yes but check anyway? These plugs are already set and you can't gap and on the box it explains this. Overall, I am very happy with the product and AM.

    krazylabrat

    Year: 2007 Submodel: GT CT

    Helpful (1) (0)

    • Response from AmericanMuscle

      Just wanted to note that even pre-gapped spark plugs need to be checked to ensure they are all done properly. It's a precautionary measure before installing them into your Mustang to prevent any possible issues. If by chance one wasn't gapped correctly, you would have wanted to give us a call for replacements. I'm glad you're happy with the plugs overall!

      Lisa , Customer Care

  • 5/5

    Installation Time: Less than 1 Hour

    January 27, 2012

    Great Regular Maintenance

    I replaced my factory plugs that had 65,000 miles on them with these new plugs and definitely saw a slight improvement in performance as well as gas mileage. I definitely recommend changing plugs sooner rather than later and be very careful when removing the old plugs as to not break them off. There is a TSB for spark plug removal on the 4.6L and when followed word for word I managed to remove all 8 plugs without one issue. Good Luck!

    Lee06

    Year: 2006 Submodel: GT

    Helpful (1) (0)

  • 4/5

    October 14, 2010

    Spark Plugs

    my org OEM spark plugs last it me to 70k+ miles, which is a little under the 100k mark there suppose to last but being my car has over 200 passes, I guess 70k not that bad.

    John

    Helpful (2) (1)

  • 5/5

    July 30, 2010

    spark plugs

    great

    everett

    Helpful (1) (2)

  • 5/5

    April 29, 2010

    Spark plugs

    Worked great-no mods needed to install

    L. Adams

    Helpful (1) (4)

  • 5/5

    Installation Time: Less than 1 Hour

    December 02, 2016

    Great job!

    Thought my mustang was really messing up bad but I started with the basics and these spark plugs got the job done and my mustang runs great again.

    Snowflake

    Year: 2006 Submodel: GT

    Helpful (0) (0)

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