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

Item 392971
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      Video Review & Installation

      Hey, guys. Today, we're gonna be taking a look at and installing the GMS 4-Valve Street Fighter Coil Packs for 2011 to 2014 GTs and 2012 to 2013 Boss 302 Mustangs. These are a direct-replacement, high-performance upgraded coil pack option for the 4-valve Coyote. These outperform the stock coil packs. They deliver a stronger, hotter spark. They'll cost about $330 for a full set of eight, and they're very easy to install. I'll call it a one out of three wrenches on the difficulty meter, and I'll show you how to get these on the car now.For this install, we used a 3/8 drive impact gun, an extension, and an 8-millimeter socket. Okay, guys. So your coil packs are located right here, actually under this cover. In order to get this cover off, we do need to remove this little PCV line right here. It is connected to your intake. There are a couple different ways you can do it. Basically, what I'm gonna do is I'm gonna disconnect it from the intake, then I'm gonna rotate around so we can actually get to the tab here on the valve cover.So there is going to be a gray tab. I feel for the gray tab. I'll push down on the gray tab, then it'll release. Now, I'm going to rotate this so I can actually have access to the tab on this side right here. I'll press the tab, and then this will release. All right. With that out of the way, we can pull our cover off. So this cover just pulls off, so we'll go ahead and grab it, wiggle it out of place.And these right here are your coil packs. They're held in by an 8-millimeter bolt. All right. So we'll pull up on the red tab, then there's a little black bar here. You'll push the black bar in, and then this will release. So we can actually go ahead and disconnect all of these now. So we'll pull up on the red tab, push down on the black bar, pull up, and it'll release. All right. From here, we'll grab an 8-millimeter socket and then remove all of the bolts. All right. So we'll back out the bolts. And with the bolts removed, the coil packs will pull right out of place.So here are the GMS coil packs compared to your factory coil packs. Obviously, I only have one side out on the table here. You guys will be getting a full set of eight in your pack. They actually look pretty identical other than the color. You guys can see the GMS coil pack versus your factory coil pack.So these are gonna be ideal for stock or slightly modified Coyotes. They are made of silicone wrapped around a magnetic core and they have zero ohms of resistance. They're stronger than your factory coil packs are. They can produce 42,000 volts while your factory coil packs can only produce 20,000. With these installed, most people notice a smoother idle right away. Sometimes, you get an improvement in miles per gallon or even throttle response.With all that being said, let's go ahead and get these installed in the car. All right. So the coil packs are not cylinder-specific, so we can just go ahead and slide a coil pack into any cylinder. What we're looking for here is to hear it click into place over the spark plug though, so we'll go ahead and push it down into place, and I can feel it seat into place. So we're just gonna go ahead and do that for all four of our cylinders on this side.All right. Then we'll grab our factory hardware and get these bolted back down. All right. Now, I'll go ahead and get these tightened down. Then we'll reconnect our electrical connections here, so we'll slide the plug in place. You guys heard it click. Then we'll make sure the red tab is pushed down too. Once again, we'll slide it into place, wait for it to click, push the red tab down. And then we can grab our cover, slip the cover back into place, and then grab our breather hose. And we'll connect it on the valve cover first and then on the intake. The install is gonna be exactly the same on the other side.All right, guys. That's gonna wrap up this review and install. Keep in mind that you can always check these out more online. I'm Stephanie, and for all things Mustang, keep it right here at

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • 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

      Granatelli Motor Sports 28-1815SF

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (8) Eight Coil Packs (Coil, Connector, Boot, and Spacer Plate)

      Tech Specs


      Customer Reviews (38)

        Questions & Answers

        10 More Questions

        Will It Fit My Mustang

        • Boss 302 - 12, 13
        • GT - 11, 12, 13, 14

        Intended for 5.0L Motors Built Before 2/23/16.

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