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NGK Iridium IX Performance Spark Plugs - Heat Range 7 (11-14 GT, Boss)

10 Reviews
Our Price

$89.99

  • Item #64064
  • MPN #6510
    LTR7IX-11
  • Market Price $99.99
  • You Save 10% ($10.00)
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Features
  • Perfect for nitrous and force inducted engines
  • Iridium tip for a constant stable spark
  • Improves fuel economy and lower emissions
  • Heat Range: 7
  • NGK part# LTR7IX-11; NGK stock# 6510
  • 14mm thread pattern
  • Fits 2011-2014 GT and BOSS Mustangs
  • Sold as a set of 8
Description
High Performance. Keeping your Mustangs high performance engine running smoothly and efficiently is important, so routinely replace your old weak plugs with a new set of NGK Iridium IX Performance Spark Plugs for constant reliable spark power. The Iridium IX plugs from NGK will provide improved throttle response, fuel efficiency, lower emissions, and will reduce fouling. Superior Materials. NGK Iridium IX Performance Spark Plugs feature a copper core electrode for its superior conductivity and an iridium tip (which is 6X harder than platinum) for it's extremely high melting point, perfect for keeping your Mustangs high-performance engine running at it's peak. And as an added bonus the Iridium IX plug features Trivalent Metal Plating for it's superior anti-corrosion and anti-seizing properties.

Application. This set of eight (8) One Heat Range Cooler NGK Iridium IX Performance Spark Plugs are specifically designed as an upgrade for nitrous or force inducted 2011-2014 GT and BOSS Mustangs equipped with the 4 valve 5.0L Coyote engine.

Mustang Fitment: 2011 2012 2013 2014 Details

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

Most Helpful Reviews View All

Overall Rating 5/5 Write a Review
5/5

Top 50 Contributor

Forced Induction NGK plugs

I was running Ford's-Motorcraft one heat range colder on my VMP-TVS blower installation when I developed a small idle hesitation, so Justin recommended going for the NGK's... perfect, the idling issue

Read More
Helpful (1) (0)

5/5
Great torque gain !

I installed these NGK spark plugs on my 2012 mustang gt at 50,000 miles replaced the stock motorcraft spark plugs after installing them I got in the car and took the car for a test drive after driving

Read More
Helpful (1) (0)

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Reviews (10) Write a Review

  • 5 Stars 1.0 100%
  • 4 Stars 0 0%
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5.0

out of 5 stars

10 Customers Recommend this Product

Installation Time:Less than 1 Hour

  • Performance Gain: 4.6 4.6/5
  • Fit: 4.9 4.9/5
  • Bang For Your Buck: 4.9 4.9/5
Filter By Sort By
  • 5/5

    Great torque gain !

    June 20, 2014

    I installed these NGK spark plugs on my 2012 mustang gt at 50,000 miles replaced the stock motorcraft spark plugs after installing them I got in the car and took the car for a test drive after driving for a couple miles I could feel how I had instant torque when I wanted I could really feel the difference in power which is what I wanted to feel after installing them. The installation was fast and easy !

    Rickydog13

    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Los Angeles, CA, USA

    Helpful (1) (0)

  • 5/5

    Forced Induction NGK plugs

    October 23, 2013

    I was running Ford's-Motorcraft one heat range colder on my VMP-TVS blower installation when I developed a small idle hesitation, so Justin recommended going for the NGK's... perfect, the idling issue went away, no problems pushing 10 lbs. of boost at 7k rpms plus with these plugs! Thanks AM!!!

    Sportys

    Year: 2012 Model: GT Driving Style: Race 'Stangs I have owned: 5+ Puerto Rico

    Helpful (1) (0)

  • 5/5

    NGK Iridium IX Performance Spark Plugs

    July 04, 2014

    Install was easy - Felt a better response than the OEM plugs. Trottle response was also better. Engine ran smoother. No gain in mileage that I can see, but to be fair - I haven't driven the car long distance to really notice. Overall - I would say these plugs are worth the purchase and install. My mustang is running better!

    STANGBOSS

    Year: 2012 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 1 Fleming Island, Florida

    Helpful (0) (1)

  • 5/5

    Essential for boost

    December 23, 2014

    If you plan on supercharging or going forced induction the colder range plugs is a must and ngk is the way to go was recommended by my tuner (jpc).I highly suggest talking to your tuner for gap size but I've always set them at .030 - .033 , these plugs eliminate spark blow out with the proper gap size under boost

    Anonymous

    Year: 2012 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 1 Fort Meade, MD, USA

    Helpful (0) (0)

  • 5/5

    Street and Strip

    August 22, 2014

    I am running a 75 shot of nitrous with these plugs. My car runs smooth while running nitrous and without it! I highly recommend these plugs!

    Jameson100

    Year: 2012 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2 Roosevelt, UT 84066, USA

    Helpful (0) (0)

  • 5/5

    Best Plugs

    August 12, 2014

    Best spark plug set up for Supercharged applications!

    Dan19

    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 5 Springfield , pA

    Helpful (0) (0)

  • 5/5

    Great Plugs for the price

    July 22, 2014

    I have a 2012 RS3 so the gap was incorrect, but once I adjusted the gap to .032" the install took less than an hour. The 5.0 is easy to replace plugs. Roush runs strong and hoping to get better gas mileage. These are great plugs for the price. AM is the cheapest I found.

    wrhecksher3

    Year: 2012 Model: Other Driving Style: Daily Driver 'Stangs I have owned: 2 Tampa, FL, USA

    Helpful (0) (0)

  • 5/5

    great for forced induction

    June 04, 2014

    weather you are running a Turbo,supercharger, nitrous or some kind of crazy combination of either, these are a great plug to keep things safe.

    Louis

    Year: 2011 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 3 pa

    Helpful (0) (0)

  • 5/5

    great features, smooth ride and saves on gas

    April 22, 2014

    really pleased with the spark plugs, a buddy put some on his 2012 Shelby and i ordered some the next day

    Adam36

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

    Helpful (0) (0)

  • 5/5

    Easy as Changing a Spark Plug

    May 22, 2013

    Not sure what if any HP gain you get, but it definitely responds better than the stock plugs. I recently installed these when I installed the Accel Coil On Plug Kit and you can certainly tell a difference in the response. I have no complaints.

    WolfstangKahlan5Oh

    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Warrensburg, MO

    Helpful (0) (0)

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