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NGK Laser Iridium Performance Spark Plugs (11-14 GT, Boss)

10 Reviews
Our Price

$119.99

(set of 8)
  • Item #64062
  • MPN#3789

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  • Market Price $139.99
  • You Save 14% ($20.00)
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Features
  • High Performance replacement
  • Improves fuel economy and lower emissions
  • Heat Range: 6
  • NGK part# ILTR6A-13G; NGK stock# 3789
  • 14mm thread pattern
  • Fits 2011-2014 GT and BOSS Mustangs
  • Sold as a set of 8
Description
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 2014 GT and BOSS Mustangs equipped with the 4 valve 5.0L Coyote engine.

Fitment: 2011 2012 2013 2014 Details

Won't fit? Add an exception

What's in the Box
  • (8) Spark Plugs
    Hardware included:
  • None Required
Installation Info
Will it fit my Mustang?
  • Boss 302 - 12, 13
  • GT - 11, 12, 13, 14

Also fits 2012-2013 Boss 302 Mustangs

Most Helpful Reviews

5/5

Top 50 Contributor

2012 GT

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

Helpful (1)

5/5

Top 250 Contributor

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 ...

Read More
Helpful (1)

Read All 10 Reviews
Overall Rating 4.4 out of 5 stars

Customer Photos

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1 Questions / 3 Answers

Ask a Question

do these come pre-gapped? and what is the gap for a '11 5.0 stock

luzstang Year: 2011 Model: GT

  • These plug do come pre gapped, should be gapped for .054. I'd recommend checking the gap on all the plugs prior to install.

    Best Answer

    MachRMan Year: 2012 Model: GT Top 50 Contributor

    Good Answer (2)

Show 2 more answers Question Resolved

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Customer Reviews (10) Write a Review

Overall Rating 4.4

out of 5 stars

Installation Time:Afternoon

  • Performance Gain 3.333333 3.3
  • Fit 4.8 4.8
  • Bang For Your Buck 3.444444 3.4



  • 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 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 3 Phoenix, AZ, USA

    Helpful (1) (0)

  • 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 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Grand Prairie, TX, USA

    Helpful (1) (0)

  • 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.

    Top 500 Contributor

    Fredrick

    Year: 2014 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 California, USA

    Helpful (2) (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.

    Top 250 Contributor

    JDeso

    Year: 2013 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 1 Las Vegas, NV, USA

    Helpful (1) (0)

  • 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.

    Top 50 Contributor

    MachRMan

    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 4 Fort Lauderdale, FL, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    March 01, 2014

    Good Quality

    Didn't fix my problem but seems like a good product. No performance gain that I can tell.

    AWA96

    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Rock Hill, SC, USA

    Helpful (0) (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 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Fort Worth, TX, USA

    Helpful (0) (1)

  • 3/5

    Installation Time: Less than 1 Hour

    August 07, 2012

    as expected

    My factory plugs had become coated in a residue from using octane boost too frequently. Swapped them out for these and as expected it cleaned the feeling up. Plugs for these cars are not cheap, but like with everything else you get what you pay for.

    Top 50 Contributor

    drew302

    Year: 2012 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 10+ rancho cucamonga ca

    Helpful (0) (2)

  • 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 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Houston, TX

    Helpful (0) (0)

  • 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 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 1 Ottawa, ON, Canada

    Helpful (0) (0)

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