(approx) 3 Hours
Light to Moderate mechanical skill required.
- Customer Submitted:
- How to Install a GT500/CS/BOSS Rear Diffuser on your 2010-2012 Mustang
$269.33+ $49.00 Handling Fee with FREE Shipping
Open Box from $154.06
Hey, guys. Adam here with americanmuscle.com. Today, I'm bringing you a detailed overview and installation of the Ford GT500/CS/BOSS 302 Rear Diffuser, available for all 2010 to 2012 Mustangs. So in this video, I'll be going over the styling and appearance you can expect from this particular rear diffuser directly from Ford as well as the materials and construction. I'll top the video off with the installation, letting you know upfront it will get a one out of three wrenches on our difficulty meter, meaning it does not require any cutting, trimming, or drilling to get this installed.The Ford GT500/CS/BOSS Rear Diffuser you see here today will be for any '10 to '12 Mustang owner looking to switch up the rear end look of their own S197 to be similar to the styling of the Ford GT500, California Special, and Boss 302 models. Now, this is gonna be geared for the guys out there looking to switch up the design, but not really aiming for an aftermarket look, but wanna keep it in the Ford family with a true Ford OEM part directly from their own warehouse. Now, typically, with something like this from Ford, you'd expect a pretty high price tag, but actually, this one's gonna be more on the affordable, compared to some of the other aftermarket options, coming in right around the $160 mark. Now, if you are someone looking for a more race-inspired design, there are plenty of different options out there from very different manufacturers to give you that aftermarket look, but this one's gonna stay true to the Ford family.This is literally going to be a direct-fit replacement coming from the Ford warehouse, and it's something you would've seen on the '10 to '12 Shelbys, California Specials, or Boss 302s, which all share the exact same rear diffuser design, the one you see on the table today. Since it is a direct-fit replacement from Ford, it does not require any drilling, cutting, or permanent modification to get installed. It'll be a direct bolt-on install. Now, after all, this is something that is gonna be a perfect accident repair. If you need a rear diffuser and you're looking to pick up an upgraded styling, this is a great way to go, or for the guys out there looking to pick up a more aggressive design.So as you can see, this one is a little bit larger and wider than the factory option that came on your GT or V6, and it does come with a matte-black finish and a textured design here just to give it a little bit more detail and, of course, rock resistance and impact resistance. Underneath here, you get a fin styling right under the license plate, between the two tailpipes, which actually might appear to be a separate piece, but it is all one connected continuous piece that, in my opinion, really flows with the lines of the body style. And since it did come on those Shelby and other models I mentioned earlier, you would expect it to look like it came from the factory. Since it is coming directly from Ford, expect really high-quality, pressure-injected thermoplastic, which is impact-resistant and long-lasting, just everything you'd expect from the Ford warehouse. So you don't have to worry about sacrificing quality with this.Because it has such a high-quality material and because it's coming directly from Ford, I'd expect it to typically have a pretty high price tag. Fortunately, that's not the case with this option. It comes in right around the $160 mark, which is more affordable than a lot of the aftermarket options with lesser-quality materials. Now, because of that, I would typically recommend this one for anybody looking to pick up a new rear diffuser, because you've got an upgraded styling, which, in my opinion, is more aggressive, doesn't require any extra work as far as install is concerned. So if you're in need of one, in my opinion, this is a perfect fit.As far as that install is concerned, you wanna have simple hand tools on deck, like a ratchet, socket set, Phillips-head screwdriver, flat-head screwdriver, pliers, very simple hand tools such as those. And of course, two to three hours at the most on the install time, and it definitely gets a one out of three wrenches on our difficulty meter. To kick things off, you will have to remove parts of the rear bumper. Now, pop open the trunk. You'll have to push away some of that trunk liner to gain access to a couple of push pins as well as the trunk light harness, which you'll have to disconnect. You'll also have to disconnect your tail light harnesses and remove those as well to gain access to the some of the things you need. The whole bumper should come off with the removal of a couple of screws inside the wheel wells of the rear. In addition to that, there's a couple of clips inside as well that'll help things come off a lot easier. Once you have the bumper completely off, you'll have to remove a couple of the wiring harness from inside. Now, that step isn't exactly required, but it is recommended to make things easier on you in the long run. From here, installing the diffuser after removing the factory option is extremely simple. It's just a matter of push pins that go all the way around the edges of the diffuser from the Ford factory. From there, just put everything back together in the reverse order you took it off in, and then you're good to go.One thing I will mention here is your backup sensors. If your Mustang is equipped with those, you will have to drill holes to make those work if you do have them equipped. If you're okay losing those and you don't wanna make any drilling or modifications, then, of course, you can skip that step. But if you'd like to make those work, the drilling holes will be necessary, in which case the installation instructions, which will detail everything I just mentioned and help you along your way, will also help you with that step as well. Overall, everything should take about two to three hours at the absolute maximum, and, again, a one out of three wrenches on our difficulty meter.Just to wrap it up, if you're the owner of a '10 to '12 Mustang, you might be looking for a way to swap out your rear diffuser to get something a bit more aggressive, while sticking to the Ford family options without going to an aftermarket design. If that sounds like you, you might wanna check out the Ford GT500/California Special/Boss 302 Rear Diffuser, available right here at americanmuscle.com.
Subscribe to our YouTube Channel
Features, Description, Reviews, Q&A, Specs & Installation
Freight Notes. Freight items can only be shipped within the continental 48 states, no expedited methods. What is freight shipping? Your Answers are Right Here!.
Fitment: 2010 2011 2012 Details
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
January 24, 2020
Aggressive look. Way better look than the stock diffuser. Dual exhaustHelpful (0)
January 23, 2020
Ford GT500/CS/BOSS Rear Diffuser (10-12 All)
Excellent quality and shipped quickly. I would recommend this part to anyone.Helpful (0)
June 16, 2019
Took some time
Took a while have to kinda take the bumper off. But it looks niceHelpful (0)
April 11, 2019
Beautiful addition to my car fast shipping! Very great price.Helpful (0)
March 22, 2019
I just had to have this! Very easy install, a buddy and i did it in about 2 hours. An vast improvement over my stock v6 one!Helpful (0)
March 14, 2019
expect to spend about 2 hours for replacing but its worth it.Helpful (0)
January 25, 2019
Gives it an aggressive look compared to stock. Straight forward on to installling.Helpful (1)
January 13, 2019
V6 Single to Dual
The Bumper fit like a glove, did have to make a few stop to get some screws though.Helpful (2)
December 03, 2018
Harder than it looks
Looks great but the video doesn’t show you what you need to do.Helpful (1)
November 06, 2018
Worth the effort
Really adds a more aggressive look than stock one and is not difficult to instal. I definitely recommend that you watch a YouTube video called How to install rear diffuser 2005-2014 Mustang although video is a 2014 which is a little different than my 2012 but it will show you how to get your bumper off. After that its pretty much common sense. You should definitely purchase a pin pulling tool about 15 bucks at any auto parts store and 2-3/8x1 bolts with 4 washers, 2 lock washers and nuts all stainless for 2 straps on new diffuser that attach behind gas tank to body, holes are already there. All told 2 hours start to finish for install which I did alone with a 15 minute break.Helpful (3)
Does this fit on a 2013 GT? I want to add this to my new 2013 GT. WIll this fit, (does the 2013 have the same dims as the 2012 rear end) or am I going to have to wait for the Spring of 2013 to get a properly matched product?
You'll have to wait for the proper product unfortunately. There were many changes made between '12 and '13. The appropriate product for your car will be out soon enough, so I'd just wait it out.
Can this retain the factory rear backup sensors?
This does not have provisions to retain the backup sensors. Retaining the sensors will require fabrication.
Does this fit the Roush square tips?
Will quad tips fit or does it have to be cut wider?
Unfortunately quad tips exhausts will not work with this diffuser.
Can the diffuser be removed from the valance or is it all one piece?
This will be all one piece.
Unfortunately this product is not currently offered in a pre-painted application. It will have a matte black finish.
Unfortunately, the RTR three piece splitter is designed to be used on the 2013-2014 Mustangs and will not be compatible with the GT500/CS/Boss rear diffuser and will only work with the 2013-2014 stock rear fascia.
The Ford GT500/CS/BOSS Rear Diffuser can be easily installed without a lift.
The Ford GT500/CS/BOSS Rear Diffuser has tabs that simply need to be pushed in for a proper install. We recommend propping the Diffuser up so that it is not being installed on an angle.
The Ford GT500/CS/BOSS Rear Diffuser will fit a 2012 V6 Mustang with a dual exhaust system.
The Ford GT500/CS/BOSS Rear Diffuser will fit on a 2012 V6 Convertible.
Installing the Ford GT500/CS/BOSS Rear Diffuser on V6 Mustangs will require a dual catback exhaust system.
The Ford GT500/CS/BOSS Rear Diffuser is designed for a single exhaust tip set up.
The Ford GT500/CS/BOSS Rear Diffuser would require some drilling and modification of the rear valence for it to work correctly. We recommend speaking with your Ford dealer or a body shop to make sure everything is lined up even and correctly for proper fitment.
This will be able to fit a 2012 GT Convertible.
(approx) 3 Hours
Light to Moderate mechanical skill required.
What's in the Box
V6 Mustangs require a dual catback exhaust system