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NGK Laser Iridium Performance Spark Plugs (11-17 GT; 12-13 Boss)

Market Price $139.99 You Save 14% ($20.00)
Our Price

$119.99 (set of 8)

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  • Item 64062
  • MPN#91725

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In Stock Ships same business day. Choose options to add to cart

Features, Video & Details

  • High Performance Replacement
  • Improves Fuel Economy and Lower Emissions
  • Heat Range: 6
  • NGK Part# ILTR6A-13G; NGK Stock# 3789
  • 14mm Thread Pattern
  • Fits 2011-2017 GT and 2012-2013 BOSS Mustangs
  • Sold as a Set of 8

Review & Installation Video

Review & Install Video

Regular Maintenance. Replacing your old weak spark plugs is paramount to keep your engine running smoothly and efficiently, so why replace them with the same old sub-par stock plugs when high performance plugs from NGK will improve fuel efficiency and lower your emissions.

Superior Construction. NGK Laser Iridium Performance Spark Plugs feature an iridium disk that is welded on the center electrode and a platinum disk that is welded on the ground electrode to reduce the wear rate of both surfaces ensuring greater durability and longer life. NGK uses pinpoint precision laser welds to reduce excess debris decreasing the required voltage to bridge the spark gap for a more efficient burn.

Application. This set of eight (8) NGK Laser Iridium Performance Spark Plugs are specifically designed as a direct fit replacement for the 2011 to 2017 GT and 2012-2013 BOSS Mustangs equipped with the 4 valve 5.0L coyote engine.

Fitment: 2011 2012 2013 2014 2015 2016 2017 Details

What's in the Box
  • (8) Spark Plugs
Installation Info
Tech Specs
Will it fit my Mustang?
  • Boss 302 - 12, 13
  • GT - 11, 12, 13, 14, 15, 16, 17

People Who Bought This Item Also Bought

Most Helpful Reviews

4/5
Motorcraft Iridium Spark Plugs as stock

NGK no doubt is more well known brand. But after I swap the stock plugs out then I found out those Motorcraft Plugs are iridium plugs as well. Also made in Japan. Overall I don't feel significant difference ...

Read More
Helpful (3)

5/5
Amazing spark plugs

These spark plugs is the best choise for your Ford Mustang(11-17 GT; 12-13 Boss)

Helpful (1)

Overall Rating 4.6 out of 5 stars
Read All 22 Reviews

Customer Photos

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13 Questions / 4 Answers

Ask a Question

do these need to be gapped?

kyleg

  • These spark plugs come pre-gapped, however, for any spark plug that is brand new it is always recommend to double check plug gap before installation.

    AMjordan

Helpful (0)

Would i have to gap these spark plugs?

DiegoB

  • The spark plugs do come pre-gapped but it is recommended to check plug gap before installation to ensure proper vehicle operation.

    AMjordan

Helpful (0)

These have a heat rating of 6. How does this compare to the heat rating of factory 5.0 coyote plugs?

THARUNUP

what is the Torque on these plugs?

JoeP

  • These spark plugs would be torqued to 133 lb.in (15 Nm). The spark plugs should be installed on an engine that is warm to the touch, but not hot or cold, to prevent damage ti the threads in the head.

    Rob D

Helpful (0)

Do they also fit my 2015 mustang V6? Or what is the best option for my vehicle?

Ricky

Are these a good replacement for the factory spark plugs (2015 GT)? The car is completely stock, they'll be replaced as part of the tune up.

ChrisS

  • The NGK Laser Iridium Performance Spark Plugs would be good replacement spark plugs for a mostly stock vehicle.

    pserafi

Helpful (0)

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Customer Reviews (22) Write a Review

Overall Rating 4.6

out of 5 stars

Installation Time:Afternoon

Installation Cost:0-$100

  • Performance Gain 3.619048 3.6
  • Fit 4.909091 4.9



  • 4/5

    Installation Time: Less than 1 Hour

    November 26, 2013

    Motorcraft Iridium Spark Plugs as stock

    NGK no doubt is more well known brand. But after I swap the stock plugs out then I found out those Motorcraft Plugs are iridium plugs as well. Also made in Japan. Overall I don't feel significant difference between NGK & stock plugs. I believe they are better than stock plugs but maybe not that much. If I know it before I might not change the plugs now and wait till later. Just my 2 cents.

    Fredrick

    Year: 2014 Submodel: GT California, USA

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    February 20, 2017

    Amazing spark plugs

    These spark plugs is the best choise for your Ford Mustang(11-17 GT; 12-13 Boss)

    MustangOwner

    Year: 2013 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    January 13, 2017

    Great product!

    Shipping was very fast, as usual. All plugs were gapped correctly. Install was very easy. Just make sure you have plenty of extensions to get down to the plug and remove the negative cable from your battery prior to swapping out the plugs, or you will have an issue when removing the plug closest to the battery. I notice a slightly better performance gain, and my car seems to start better and warm up a little quicker.

    HSVGT

    Year: 2013 Submodel: GT

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    December 18, 2014

    NGK Sparkplugs

    You always get what you paid for and these spark plugs are no exception. Car warms up a little bit faster but did not really feel any performance gain. They were a fairly easy product to install. Gas mileage did not increase nor decrease. I got lucky that I did not break any of my old ones. I would definitely recommend these spark plugs for anyone that wants to do better than OEM.

    xsteadyx

    Year: 2012 Submodel: GT Houston, TX

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    August 30, 2014

    Quality Product

    This is my first time ever installing my own spark plugs, so installation took a couple hours. Could probably get it done in about little over an hour if experienced. Can't really compare to others, or make any note on the performance gain since I don't have a dyno. I can say though that as a driver I noticed the car ran a lot smoother. Overall, I'm very happy with this product.

    ElectroTurk

    Year: 2011 Submodel: GT Ottawa, ON, Canada

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    January 24, 2014

    Great Replacement

    Took just about 3 hrs to install these. Smoother idle and perfect fit.

    Carolina

    Year: 2012 Submodel: GT Phoenix, AZ, USA

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    January 24, 2014

    NKG Plugs

    They are OK, did not see alot of difference. For the money, Ford plugs are just as good.

    ham711

    Year: 2014 Submodel: GT Grand Prairie, TX, USA

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    November 14, 2013

    Good Plugs

    Overall im very happy with these plugs, I like the fact that my cars warms up faster at cold start up.

    2014CS

    Year: 2014 Submodel: GT Fort Worth, TX, USA

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    August 21, 2013

    Plug install

    Overall the install was seamless. Out with the old and in with the new. I have had the car for a year and it is always my routine to change plugs every year regardless if they need it or not. These plugs were on sale so I bought them. Good quality construct with good fit. I would recommend them for all.

    JDeso

    Year: 2013 Submodel: GT Las Vegas, NV, USA

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    August 21, 2013

    2012 GT

    Easy install. Less than an hour. NGK always makes a great product! Smoother idle.

    MachRMan

    Year: 2012 Submodel: GT Fort Lauderdale, FL, USA

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    September 15, 2017

    No more misfires

    The plugs are great! Car runs beautifully. No more codes

    MCC

    Year: 2013 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Less than 1 Hour

    August 23, 2017

    power

    these plugs are power in a box way better than stock plugs more tourque. great product customer service is as always great

    KevinH

    Year: 2011 Submodel: GT

    Helpful (0)

  • 4/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    August 04, 2017

    Noticeable difference

    I bought these for my 2012 GT, mainly because of a slight rough idle. These have really solved that issue, as well as generating a smoother acceleration. I'm very happy with my purchase.

    DiegoE

    Year: 2012 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Less than 1 Hour

    July 26, 2017

    NGK Laser Iridiums Performance Spark Plugs

    I installed these before a business trip from San Francisco CA to Scottsdale AZ. I saw an immediate change in my throttle response and gas mileage. Definitely worth it.

    AlbertoJ

    Year: 2014 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Afternoon

    June 18, 2017

    tune up for dyno day

    Plugs were perfectly gapped and added smooth power!

    Michael

    Year: 2012 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Afternoon

    June 16, 2017

    Spark

    These plugs seem to perform a little better than the stock plug.

    KeithR

    Year: 2015 Submodel: GT

    Helpful (0)

  • 5/5

    June 09, 2017

    Good

    Spark plugs haven't been changed for 60k miles and car was struggling when going up hills and when hard accelerating. These plugs calmed the engine down and she runs as smooth as she did new. Do recommend if your car is idling rough or struggling.

    Colby

    Year: 2014 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Less than 1 Hour

    March 22, 2017

    Easy but careful

    VERY IMPORTANT WHEN INSTALLING REMOVE THE BATTERY FIRST!!! Almost killed my self installing the passenger side last spark plug. Yes I know a very noobie mistake. And other than that very very easy to install and smoother idle than stock by far

    comptonguy

    Year: 2011 Submodel: GT

    Helpful (0)

  • 4/5

    Installation Time: Less than 1 Hour

    March 20, 2017

    good value for the money

    replaced my factory plugs with these at 90K miles. idling improved some. I also replaced the coil packs with high end after market ones. these two in combination gave better and more consistent acceleration. don't forget to check the gap prior to installing. I also recommend to put anti seize lubricant on the threads as well.

    tgallops

    Year: 2011 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Less than 1 Hour

    January 01, 2016

    A nice buy

    I bought these plugs and just like some other reviews said I got a smoother idle. That was the most notable difference. I also noticed better response. My car need plugs and I went we these and picked up a little something too. Remember they are just plugs.

    Marcos1961

    Year: 2011 Submodel: GT Gilroy, Ca.

    Helpful (0)

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