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MP Concepts Rear Diffuser (15-17 Mustang GT Premium, EcoBoost Premium)

Item 406719
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      Video Review & Installation

      Justin: If you're looking to increase the rear-end appearance and aggressiveness in your 2015 through 2017 premium Mustang GT or EcoBoost, then you should definitely check out MP Concepts Rear Diffuser that we have here today. Now, this diffuser is built using OEM Ford CAD data with a durable injection-molded polypropylene and will be backup-sensor compatible all for right around the mid $100 price point. So this diffuser is a great way to, again, really increase the appearance of your rear-end by adding some of that race car-inspired styling that seems to look just right at home here on the modern Mustangs. In fact, Ford must have enjoyed the styling as well as they've included it on the stock 2018 and newer Mustangs along with that quad-tip exhaust. And I must say as a 2019 owner, it looks really sharp on the car.Now, this option, again, is for the Premium Package EcoBoost and GT that does have that two-piece rear bumper. Now, this diffuser will install in place of that lower color match piece that does need to be removed prior to the installation and we will show you more on that later in the video. Now, if you did stumble across this video and you have a bass Mustang with a one-piece bumper, well, don't get too disappointed because MMD does have an option that looks very similar to this back on the site that is designed for the one-piece bass bumper. And again, you can find that here at AM under item number 406761.But getting back to this piece and materials again are gonna be that injection-molded polypropylene, which is gonna deliver a look and feel similar to that of the exterior factory plastic found in your S550. It's even given a very similar stippled green texture, if you will. So, expect it to flow very well once installed. Now, as I mentioned earlier, guys, this part can be used either with or without the factory backup sensors and will accept your stock or aftermarket reverse light and rear reflectors. But now we wanna segue into the install and show you a little bit more on how the bumper will need to be modified in order to fit the MP concepts diffuser. So it is gonna go middle-of-the-road two out of three wrenches on the difficulty meter here and call it a couple of hours or so to complete from start to finish. But to give you a better idea of just how things will go down on your S550 at home, here's an AM customer to walk you through it now.Man: And these are gonna be the tools we're gonna be using today. We've got a drill here with a quarter-inch socket adapter. And we got a 10-millimeter and a 7-millimeter socket along with a quarter-inch ratchet Phillips, clip hoppers, and just extra tools just in case we're gonna need them. And our Dremel, the most important thing. We're gonna have one, two, three, 7 millimeters in the back and we're gonna have two of the plastic removal clips as far as this side. As we work away, we're gonna have another plastic removal, and then we're gonna have our two 7-millimeter screws, more plastic clips, and it's gonna be the same setup on that side. So we're gonna get started from the corner. So we're gonna start with the quarter-inch ratchet 7-millimeter. Just gonna take it off.Okay. This is your first one, it's gonna be your 7-millimeter. I'm gonna keep these separate from everything. We have another one. It'd be probably better to go over the exhaust pipe on this one. I already got all these loose. Number two. And then you got a third one back here. Same side. This one is loose. Okay. The third bolt. Now we got our two clips right here, one and two. Same thing with these. You're gonna pop the little circle part out first and then you can get the whole clip out. You're gonna take your time. They'll come out. Same thing. All right. Now, for these two screws, since I do have a drill at handy, I prefer using a drill whenever I can. It makes your job a little easier. So I'm gonna get my quarter-inch on my 7-millimeter. These come out fairly easy. And keep these separate as well, kind of, you know, keep stuff in the same way you're working. It's gonna come out. So, one hand over the exhaust with the socket. Get it loose and then get it off by hand. And we got another one in here. And between these two clips, you always remember these two clips right there. Same thing. That's open there. So get it loose. And we are good. Take it off by hand. All right. Here it is. Take it out by hand.All right. On your reverse lens, you do have four 7-millimeter screws, one right there, one right there, then you have two on the very top, but as you can see mine does not have them. You wanna keep these separate as well somewhere. All right. And we will be installing this on the new ballast. You can see the four bolts I was talking about. So, the best way to go about it is to kind of start from the left and make your way to the middle. The easiest way to do it is to just kind of firmly pull towards you. Keep a good little firm because it can get tricky. And it does get kind of hard but I have removed mine before, so it kind of comes off a little easier as you can see. But when I first took it off, yeah, it was really, really hard to pop it off. Okay. That's halfway done. So you'll see where it's loose already from removing bolts and it's kind of fine where it feels stiff and then just give it, like, a gentle pull.Yeah. It kind of looks like the whole bumper wants to come off, but, you know, don't be alarmed by that. It's just the [inaudible 00:08:33] Okay. So once you have all your clips out... oh, these kind of came out on their own, you have them that clip into the actual balance that's on the car. You see this? We have some more over here that are still hooked on onto the gray part. And we need to unhook this from this. So, we do that. And there right there if you wanna get up in here, you can see, yeah, it kind of came off on its own. But yeah, all in here. You have clips. There's one, two, three, four, five, six, seven, eight of them. And they all clip right here. That's how you get the factory one. And these can be a real bad pain. We're basically gonna just do a straight cut as straight as you can do it. You don't expect to I said, I'm not a professional, I'm not a mechanic or anything, but just as straight as you can get it.All right. Right here we're gonna be using a Dremel tool with a cutting wheel. You wanna be careful with these. These are really sharp and they spin really fast, the Dremel tools, and they can easily cut you. Like I said, it doesn't have to be perfect. I'm not a mechanic or anything or I might ever even used the Dremel more than a handful of times but, like I said, we could always go back and polish this out. These are gonna be your four 7-millimeter screws. And you wanna come get a close-up of here. On top of your reverse light, you see these little notches. You just wanna make sure those are right there where they belong. Sometimes they can slide under and, you know, you have a crooked light back here. Kind of get them a little hand tight and... And with plastic, you never wanna go too crazy with it. Just go enough to where it just stops moving. You don't wanna go too crazy with that plastic.As long as you know it's not gonna fly up when you're on the highway. That's pretty sturdy right there. Got our little locks in place. Okay. That's how we do that. Okay. Keep our little nut. The clip-lock in. And then we're gonna put our little 10-millimeter nut. These don't have to go crazy-tight either. This can just be as simple until it stops turning. All right. You wanna take a flathead screwdriver, get up in there. Try to get under it and just kind of wiggle it and at the same time with your other hand just pull it out and it'll pop out. And they do go like this on the oval. One, two, three. All right. And then that should be it for your old diffuser. This is just plastic now. We've got no metal on it, no reflectors. Nothing else you'll need. All right. So, now we're gonna go ahead and install our metal sleeves where they just snap right on. Keep in mind that the diffuser is new, so you might have a little trouble getting it on there the same way. Pretty easy. And this one is [inaudible 00:14:45.672] here, looks like it wants to break off. Yeah. Just be careful with some of these fins. Like I said, this one is a little flimsy. I don't know if it's just something from shipping or what, but, yeah, just be careful with those because you don't wanna lose one of those.For this, it does have a lot, you have a second hand with you because it is a big piece. It's not heavy but it is big. So just get everything where it needs to go. And all your clips are gonna line up. They should line up to where you need to go. Like I said, I like to start from one side to the other. So, just hop in on more or less, get it. Okay. So you have the clips all the way around. Careful with that. I'm gonna move around a little bit so it's lined up. Give it a good push. Yeah. And these will go on once we get under the car. But the main part right now is getting this all up in there. And the ones that go on this side are gonna be the ones with the washer. Just a heads up because most of them are seven millimeters, so you can get confused. Yeah. Just try to get it a hand-tight, once you see it's not going anywhere, take your other one. Go over the exhaust pipe. The same thing over here. Hand-tight. Third one here. Same three screws. Hand-tight. And we're going to be using our clip to put back our disk cover. And then these go... If you don't already know this, this part has to go in first. All right. And then you put the top on. Yeah. If you try to put them both in at the same time like the old school clips, they will not go in.All right. That's it. Same thing. Big slide goes in and the little slide. Okay. It's very easy to lose stuff there in the install. Okay. It's tight. Get everything hand-tight the best you can. With the exhaust. Okay. All right. Disk cover is on there. And then last but not least, I'm gonna put in our reverse lights. First light has three sides. Big side you can... If you look on there, you can see which way, and then you're gonna put it on there and you're gonna give it a slight turn to the right. All right. You see it said flash. Half a turn. That's it. And then pop in your clip. All right. And then you're done.Justin: Wrapping this one up, guys. The MP Concepts Rear Diffuser is an affordable way to really crank the rear-end aggressiveness on your S550. And you can grab yours right here at

      Product Information

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


      • Track Inspired Styling
      • Durable Injection Molded Polypropylene
      • Features a Stippled Grained Texture
      • Straight Forward Installation - Cutting Required
      • Backup Sensor Compatible
      • Intended for use with Single Outlet Exhaust Systems
      • Designed for Premium Chassis Packages Only (Trim Levels: 200A/201A/400A/401A)
      • Fits 2015-2017 GT Premium and EcoBoost Premium Mustang Models


      Track Car Styling. Add intimidating track car styling to your 2015-2017 Premium Package Mustang by installing a MP Concepts Single Outlet Rear Diffuser. Designed to fit on Premium Package Mustangs with single exhaust tips only, this Diffuser flows nicely with the lines of your Mustangs rear bumper cover.

      Quality Construction. MP Concepts manufactures their Single Outlet Rear Diffuser from injection molded polypropylene (PP) plastic using the original OEM CAD data from Ford to ensure a perfect fit. Polypropylene is an extremely strong material known for its light-weight, superior durability and impact resistance - making it perfect to withstand the hazards of daily driven vehicles. This Rear Diffuser is completed in a fine grained stippled texture for a factory look that helps to hide the appearance of rock and stone impacts.

      Straight Forward Installation. Installation of the MP Concepts Rear Diffuser is simple and straight forward. However, it will require permanent modification to the stock rear bumper cover to remove a section of the factory diffuser. Installation can be completed in about two hours. Reuses factory reflectors.

      Backup Sensor Compatible. This MP Concepts Rear Diffuser can be installed on Mustangs equipped with or without factory installed back-up sensors and will not affect sensor operation.

      Application. This MP Concepts Single Outlet Rear Diffuser is specifically designed to fit 2015-2017 GT and EcoBoost Mustangs equipped with the factory Premium Chassis Packages only (Trim Levels: 200A/201A/400A/401A). Intended for use with single exit (single tips) exhaust systems.

      Please Read. Premium Bumpers feature textured black trim with a body colored diffuser. Non-Premium Bumpers are all body color. If you are having trouble determining what style bumper your Mustang is equipped with please refer to the comparison image above or feel free to give us a call.

      MP Concepts



      MP Concepts 406719

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • Driver/Left Side Rear Diffuser
      • Passenger/Right Side Rear Diffuser
      • Center Section Diffuser
      • (4) Spacers

      Customer Reviews (70)

        Questions & Answers

        10 More Questions

        Will It Fit My Mustang

        • EcoBoost - 15, 16, 17
        • GT - 15, 16, 17