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GMS 4V Street Fighter Coil Packs (11-14 GT; 12-13 BOSS 302)

Market Price $370.99 You Save 12% ($43.24)
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  • Item 392971
  • MPN# 28-1815SF

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    Features & Details

    • Perfect Upgrade for 4-Valve 5.0L coyote's
    • Increases of 10+ Horsepower and 10+ ft/lbs of Torque
    • Up to a 10% Increase in Gas Mileage
    • Improved Throttle Response
    • Smoother Idle
    • 0 ohm Technology
    • EMI and RFI Suppression
    • Coil Voltage: 42,000 Volts
    • Made in the USA
    • Fits 2011-2014 GT & Boss 302 Mustangs
    More Horsepower and Torque. When it comes time to replace your Mustang GT's old coil packs don't settle for OE replacements, upgrade for more power. By installing a set of Granatelli Motor Sports Street Fighter Coil Packs you will see an increase of 10+ Horsepower and 10+ ft/lbs of Torque at the rear wheels. These GMS Coils produce an amazing 42,000 volts, that's 22,000 more volts than the factory coils, which results in more power, better throttle response and a noticeably smoother idle. Street Fighter Series Coils are an ideal replacement upgrade for stock or lightly modded Coyote Mustangs searching for an additional boost in power.

    Better Fuel Economy. GMS Street Fighter Coils not only improve the rear wheel power of your GT, but they also improve its fuel economy as well. After installation Coyote owners have reported up to a 10% increase in gas mileage. Because of the higher voltage of these Street Fighter Coils your spark plugs will produce a hotter spark. This hotter spark will burn the air/fuel mixture more completely releasing all of its potential energy which translates into better fuel economy and more power.

    0 ohm Technology. Granatelli Motor Sports proudly manufactures their Street Fighter Coil Packs right here in the USA. Featuring patented “0” ohm technology GMS Coils use a silicone magnetic steel core that not only improves spark power, but has 0 ohms of resistance so all the spark energy of the coil transfers to the spark plug. This patented design also suppresses Radio Frequency Interference (RFI) and Electro Magnetic Interference (EMI) to effectively shield your Mustangs sensitive electronic components from interference.

    Application. This set of eight Granatelli Motor Sports 4-Valve Street Fighter Coil Packs are designed as a direct fit performance upgrade for the 2011 to 2014 GT and Boss 302 Mustangs equipped with the Coyote 5.0L 4 valve V8 engine.

    Fitment: 2011 2012 2013 2014 Details

    What's in the Box
    • (8) Eight Coil Packs (Coil, Connector, Boot, and Spacer Plate)
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    7 Questions / 7 Answers

    Ask a Question

    When it says a “smoother idle”, i may sound dumb but what exactly does that sound like? To me with my set up my idle sounds smooth, i just want it to be louder, kind of confused me when it said smotther idle.

    MatthewS

    • The GMS 4V Street Fighter Coil Packs will not change the sound of your Mustang, it will change the way it runs. Sometimes with other Coil Packs idle will jump around, these will be more consistent and fluctuate less.

      Rob S

    Helpful (0)

    Will the stock plugs work with these gms coils or do you recommend something else my car has 37000 miles

    mase

    • Stock plugs will have no issue working with the GMS 4V Street Fighter Coil Pack. At 37,000 Miles, your stock plugs have plenty of life left in them.

      Rob D

    Helpful (0)

    Do these work on the s550 5.0s because I see others in the reviews with submodels that are 2016 so do they work or don't?

    BillySAW951

    • We can not guarantee fitment on the S550 Mustangs. We recommend the GMS 4V Street Fighter Coil Pack only be used with 11-14 S197s.

      AM MikeW

    Helpful (0)

    Does GMS recommend a specific spark plug gap for these coils?

    Charles

    • There is not a specific plug gap recommended to be used in conjunction with this GMS coil on plug kit, we would recommend the use of the factory plug gap specifications.

      AMjordan

    Helpful (0)

    I have a 2016 mustang performance package Will it work on a stock mustang The coils. Also I'm going to need the spark plugs which one would you recommend me for use on those coils

    JoelC

    • These GMS 4V Street Fighter Coil Pack are designed for 2011-2014 Mustang GT's and will not work with 2015-2017 models. In regards to spark plugs, we would recommend the NGK Laser Iridium Performance Spark Plugs, Item 64062 which are an ideal upgraded replacement. http://www.americanmuscle.com/ngk-iridium-3789.html

      AMJEFF

    Helpful (0)

    I have a 2017 mustang gt the built date was June of 2016 will this product still work on mine

    MichaelP

    • The GMS 4V Street Fighter Coil Pack fits 2011-2014 GT & Boss 302 Mustangs, it will not fit a 2017 GT.

      AMJackson

    Helpful (0)

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    Customer Reviews (22) Write a Review

    Overall Rating 4.5

    out of 5 stars

    Installation Time:Less than 1 Hour

    • Performance Gain 4.105263 4.1
    • Fit 4.947369 4.9



    • 4/5

      July 07, 2018

      tune up time

      coil pack fit very well and look nice. Only concern is plugs dont lock on like they did on the stock coil packs. I havent noticed any performance gains yet, but maybe will see a increase in mpg in time, being to soon to tell.

      LarryB

      Year: 2011 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      May 11, 2018

      Stocks are good but GMS are better

      People are skeptical about this swap but the performance gains are noticeable. Im not sure if the extra park just cleans out the chamber from build up but the engine feels great. I would say you gain some power and lose a little mpg. The throttle response is much better and the exhaust is a little louder. My GT is at 33K miles so I installed these with stock spark plugs. Get these for a happy engine.

      RaymundoM

      Year: 2014 Submodel: GT

      Helpful (1)

    • 1/5

      Installation Time: Less than 1 Hour

      April 27, 2018

      Terrible

      Terrible don't buy went out in less than a week deeply disappointed

      TravisR

      Year: 2011 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      March 08, 2018

      Cleaner power

      This seems like a solid set of coils. I have had no issue with them in the last 2 months and the install was a breeze. Overall the performance gain is minimal, the idle is smoother. Its just a peace of mind install after a stock coil died. If you are looking for price to performance, don't get these. You will not feel any gains from these other than a smoother idle.

      SCVDriver

      Year: 2014 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      January 14, 2018

      GMS 4V Street Fighter Coil Pack

      I installed these GMS 4V Street Fighter Coil Packs with new spark plugs. The Mustang idles nice and smooth and packs a punch on the acceleration. I noticed a big difference in performance.

      dbradlow

      Year: 2012 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      December 30, 2017

      Hotter is Better

      I bought these street fighter coils because I'm always looking for more HP and my car has started lagging on start up, and it fixed that ! My car use to spend when I slammed the pedal at a 25 mph roll on a 275/40/19 tires but that stopped once I went to 305/35's I shouldn't complain because I'm putting the power down, but I missed it ! will it's back with these coils ! I did acouple of pulls and red-lined it twice so watch your rpms cuz it revs up fast and I'm running tall gears 331s, I love these coils.

      mase

      Year: 2014 Submodel: GT

      Helpful (1)

    • 5/5

      December 04, 2017

      Coil packs

      They worked very works better at higher rpm betterspark for my nitrous

      Lamarrana

      Year: 2013 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      October 20, 2017

      GMS Coil Pack

      So far so good. Be sure to check the heat range of you spark plugs and use anti seize. As you add power to your 5.0 build it will require a colder plug. The car seems to Idle better and has a quicker response. I have not had a chance to test drive it due to other work that I'm doing.

      JohnR

      Year: 2011 Submodel: GT500

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      September 11, 2017

      easy install

      easy to install and I think the petal feels a little quicker, but it could also just be in my head. Gas mileage... We drive our 5.0 fast so gas doesn't really matter lol

      Willis

      Year: 2015 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      September 01, 2017

      Amazing

      I bought these to help with a steady ideal. Which they did my my car ride smooth when sitting at stop lights

      TylerH

      Year: 2012 Submodel: GT

      Helpful (1)

    • 1/5

      Installation Time: Afternoon

      August 29, 2017

      Failed after 3 weeks

      Not happy at all, worked OK for the first three weeks, then this morning failed on the way to work

      Roushian

      Year: 2012 Submodel: Other

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      August 12, 2017

      great way to tune up your stang.

      My mustang had a slight misfire so i bought a set of GMS 4V street fighter coil packs and a set of factory plugs and i will say the car runs great. The misfire is gone and i noticed better throttle response a little more power and better milage. im very happy with the way the car runs now . note let your stang idle for a few mins and get some drive time after. by the next day you will see a difference. NOTE,DOUBLE CHECK THE SPARK PLUG GAP. i have a 2013 gt 5.0

      brianf

      Year: 2013 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      June 29, 2017

      Cool pack

      These coils are great!! Pair these with some new spark plugs and you'll notice a difference instantly!!

      WalterJ

      Year: 2013 Submodel: GT500

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      June 01, 2017

      Quick and easy install

      Good up grade without spending a bunch of money !! Install very easy if you were wondering !!!

      MaryP

      Year: 2014 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      May 05, 2017

      Gms street fighter coil pack

      Real easy to install, but be careful taking the clips off, i broke one and had to get the Motorcraft kit to replace it, the 2011 Mustang Gt idles better but i see no increase HP.

      chuck2011

      Year: 2011 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      April 18, 2017

      Smoother idle, louder backfires after tune

      Idles better and fit perfectly Slightly better response

      RandyC

      Year: 2011 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      January 22, 2017

      GMS Street Fight Coil Packs 11-16 GT-Boss

      Installed JLT CAI, BBK 85mm throttle body, Boss 302 intake on 2013 GT. Upgraded to better spark plugs and installed new coil packs. Installation was simple. Noticeable difference at high revs. Increased response, better acceleration. Less throttle when cruising. A noticeable difference and overall improvement when compared factory plugs and coils.

      Flint

      Year: 2013 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Less than 1 Hour

      December 10, 2016

      Excellent!

      A good compliment to your Mustang as these will burn off a little more previously wasted fuel and free up a few more ponies. Plus they are blue and who doesn't like blue?

      SteveK

      Year: 2016 Submodel: GT

      Helpful (1)

    • 4/5

      October 12, 2016

      Good Value for your dollar.

      Coils came individually packed in bubble wrap and were a snap to install. I spent approximately 35 to 40 minutes on this install with little to no issues at all. After installation on my 2014 GT it appeared to have a smoother idle and quicker response time. The quality of the product was top notch and would recommend anyone wanting to achieve this type of performance from their Mustang at a reasonable cost compared to other name brands. Good bang for your dollar.

      Nemesis

      Year: 2014 Submodel: GT

      Helpful (2)

    • 5/5

      October 10, 2016

      good product

      After instalingl these coils I experienced better idle, a slight increase in throttle response and increased my gas mileage by almost 3.5 miles per gallon. However, with increase in throttle response it makes me drive it up to its potential. Increased gas mileage goes back down but it sure is fun to drive. Seems to be best coils out there for this application.

      GT6711

      Year: 2011 Submodel: GT

      Helpful (2)

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