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Ford GT500/CS/BOSS Rear Diffuser (10-12 All)

Market Price $144.99 You Save 12% ($17.21)
Our Price

$127.78

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  • Item 53675
  • MPN# AR3Z-17F828-AA

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Features, Video & Details

  • Shelby GT500/Boss Styling
  • Genuine Ford Part
  • Features Grained Texture
  • OEM-Quality Plastic Material
  • OEM Fit and Finish
  • Fits 2010 to 2012 Mustangs

Review & Installation Video

Review & Install Video

Shelby GT500 Styling. This Lower Rear Valance (a.k.a. Diffuser) is the exact same one that is featured on the Shelby GT500, California Special and Boss Mustangs. Offering aggressive race inspired styling this rear diffuser makes the perfect replacement part or appearance upgrade for your Mustang.

Quality Construction. Made from OEM quality high pressure injection molded thermal plastic for it's long lasting durability, this rear diffuser features an OEM grained texture to increase longevity against rock impacts from daily driving.

Application. This Rear Diffuser is a direct fit replacement for the 2010 to 2012 Shelby GT500, California Special and Boss Mustangs, and can be installed to upgrade the appearance of the V6 and GT models.

Shipping Note: This product can not be shipped to an APO/FPO, Guam, Hawaii, Puerto Rico, Alaska, the US Virgin Islands or Canada addresses.

Fitment: 2010 2011 2012 Details

What's in the Box
  • (1) Rear Diffuser
Installation Info
Tech Specs
Will it fit my Mustang?
  • Boss 302 - 12
  • V6 - 10, 11, 12
  • GT - 10, 11, 12
  • GT500 - 10, 11, 12

V6 Mustangs require a dual catback exhaust system

People Who Bought This Item Also Bought

Most Helpful Reviews

5/5
Rear-ly Awesome...

The product itself is top notch but unfortunately there is no installation guide with this item. There is some guess work involved but the entire install is pretty easy but requires some specific tools ...

Read More
Helpful (7)

5/5
Great look and easy install!

This only took me 2 hours to install! It didn't come with instructions so I used the ones for the Roush part. Very similar. I had to get a buddy help detach and reattach the assy to the car. Other than ...

Read More
Helpful (4)

Overall Rating 4.9 out of 5 stars
Read All 94 Reviews

Customer Photos (87) Submit Your Photo

View All 87 Photos

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17 Questions / 10 Answers

Ask a Question

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?

dave72b

  • 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.

    Logan50

Show 4 more answers Helpful (3)

I did a quad pipe style on my 2010gt, will this fit since I have a quad tip?

MoisesD

  • The Ford GT500/CS/BOSS Rear Diffuser is designed for a single exhaust tip set up.

    JaHarrisAM

Helpful (0)

Is there anyway i can transfer my factory rear parking sensors over to this?

JoseG

  • 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.

    TerriB

Helpful (0)

will it fit a 2012 gt convertible

jdtogo

  • This will be able to fit a 2012 GT Convertible.

    KevinD92

Helpful (0)

will this fit a 2o11 v6 with Roush axel backs?

kingbayo

  • Hello! The Ford GT500/CS/BOSS Rear Diffuser will fit a 2011 V6 with Roush Axle backs

    VincentV

Helpful (0)

Can I put quad tips on this setup ?

JosephM

  • Unfortunately, quad tips will not fit with this diffuser.

    AshleyK

Helpful (0)

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Customer Reviews (94) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Afternoon

Installation Cost:0-$100

  • Fit 4.773809 4.8
  • Appearance 4.940476 4.9
  • Bang For Your Buck 4.738095 4.7



  • 5/5

    July 11, 2011

    Rear-ly Awesome...

    The product itself is top notch but unfortunately there is no installation guide with this item. There is some guess work involved but the entire install is pretty easy but requires some specific tools - mainly push pin pliers! The item comes with these two tabs - AND THEY LOOK BROKEN BUT THEY ARE NOT. I went through some pain trying to figure this out. Install takes about 2 hours - maybe more. But some has been able to do in 1 hour. Overall it gives the mustang a more aggressive look from the back. Good job AM!

    Elm Valle

    Year: 2011 Submodel: V6

    Helpful (7)

  • 5/5

    Installation Time: Afternoon

    August 24, 2011

    Great look and easy install!

    This only took me 2 hours to install! It didn't come with instructions so I used the ones for the Roush part. Very similar. I had to get a buddy help detach and reattach the assy to the car. Other than that, It's pretty easy. Truly worth the money!

    areedaf

    Year: 2010 Submodel: GT Brescia, Italia

    Helpful (4)

  • 5/5

    Installation Time: Afternoon

    March 01, 2012

    nice part for the money highly recomended

    Everything arrived in perfect condition and realy fast I loved so You earned my bussines from now on planning on buying more stuff from you Thanks Jose

    Dontole56

    Year: 2012 Submodel: V6 Orlando FL.

    Helpful (3)

  • 5/5

    August 22, 2011

    Much meaner looking

    Part arrived well packed from AM. Install took a little longer for me because my 2012 V6 MCA has the reverse sensors in the diffuser, so I needed to drill holes for the sensors in the GT500 diffuser (measured 10 times, cut once!). Fitment is perfect, looks like it came from the factory with this diffuser on it.

    Pete

    Year: 2012 Submodel: V6

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    November 26, 2012

    GT500/CS/BOSS Rear Diffuser

    Most of the instillation process was deciding whether or not to cut holes for back up sensors. Hesitantly, I went ahead and cut them myself. I would of liked to have an option for the back up sensor holes to be pre-cut. Also I had to do some dremal trimming to make the sides line up with the bumper. Overall it turned out just the way I wanted it.

    SausageGumbo

    Year: 2012 Submodel: GT Shreveport, LA, USA

    Helpful (2)

  • 5/5

    Installation Time: Afternoon

    March 01, 2012

    Nice looking rear

    It took me about 1 1/2 hours to install. Much more aggressive look than the factory rear diffuser on the V6. Great bang for the buck. Very satisfied with my new rearend.

    Unclenard

    Year: 2012 Submodel: V6 FL

    Helpful (2)

  • 5/5

    Installation Time: Less than 1 Hour

    February 11, 2017

    Rear diffuser

    Perfect fit for 2010 V6 and my mustang is more aggressive looking!!! Thanks AM

    Iskitoy

    Year: 2010 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    February 06, 2017

    Looks great!

    Great product with a great look. Install time was about 1 1/2 hours not to difficult. Gave my V6 the aggressive look of a V8 a must for anyone looking to add style.

    Barricade

    Year: 2012 Submodel: V6

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    January 10, 2017

    Looks good!!

    Install went well.. Valance was a lil warped but got it put in in no time

    Hulsey602

    Year: 2012 Submodel: GT

    Helpful (1)

  • 5/5

    September 04, 2016

    Boss 302 rear diffuser backup sensors.

    It was real hard to make the decision to drill holes in the Boss 302 rear diffuser for the backup sensors. After very carefully cutting the holes for the sensors, the finish product was well worth the time.

    RedRocket

    Year: 2012 Submodel: GT

    Helpful (1)

  • 4/5

    August 29, 2016

    Great product!!!

    Easy install took around 1 1/2. Shipping was also fast. Only thing I disappointed about was American muscle spelled my address wrong so the ups driver had to call me acouple times to figure out where I lived. Box was also in horrible shape barley closed. But thank god nothing was damaged. Other Than that instal was easy, part looks great and for the money it's worth it.

    Ricky

    Year: 2012 Submodel: V6

    Helpful (1)

  • 5/5

    August 23, 2016

    Yay

    Looks great. I wanted exactly what I got makes the back look tons better

    Jaw

    Year: 2011 Submodel: GT

    Helpful (1)

  • 5/5

    August 10, 2016

    Looks awesome, easy install

    This diffuser looks great and only took me about 2 hours by myself. That's with an added step also, since I had to remove my rear wheels (screwdrivers too long). I did it myself, didn't need a helper. Lining everything up was easy.

    D

    Year: 2012 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    November 09, 2015

    Rear Diffuser

    Part arrived as freight on an 18 wheeler. Must be because of the size dimensions, certainly not the weight. The driver finally made it out of the cul-de-sac...in reverse. The install took about 2.5 hours for me (interruptions from the wife). I would recommend you get a "Trim removal Kit" from your local auto store. It will save the clips and make the install much faster. This item should be standard on all dual exhaust Mustangs. It gives the car a more aggressive look from the back and completes that modern/retro combination for the S197 rear end. Thanks AM! Saving for the next item!!

    Jeb

    Year: 2010 Submodel: GT Brunswick, GA

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    November 22, 2013

    A Good Looking Diffuser

    I bought this diffuser to compliment a dual exhaust conversion on my v6. Something about cutting a hole into my old diffuser just didn't sit well with me. I installed this with my dad in the course of about 2 1/2 hours. The hard part was removing the existing diffuser. The entire process involves removing (essentially all of) the rear end. I STRONGLY suggest using push pin pliers. There is a bit of a gap between the diffuser and the valance. The gap got larger in the corners (about 1/16" - 2/16") and then pretty much disappeared by the license plate area. The gap was enough to thoroughly get on my nerves. We proceeded to pick at the gap until it was almost gone and just decided to deal with it. There really wasn't much we could do at all about it. Aside from taking some automotive adhesive and squeezing it in there, clamping it shut. This we did not do. The price is reasonable I suppose for a genuine ford part. I find it amusing the amount of money companies charge us for $25 worth of plastic. Note: The instructions provided suggest using a forked push pin plier to remove the two white push pins located underneath the car. This is not necessary. You can just break them off as the new diffuser already has them ready to go. We certainly didn't have any luck removing them in a more... Civil manner. Long story short? It looks good, installation is a pain, but you can always take it to a body shop and have them do it.

    ChefJim

    Year: 2010 Submodel: V6 Utah

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    August 14, 2012

    Fast and easy install

    The fitment was a tad off here and there but only a perfectionist would notice it. The install instructions are very acurate except it didnt take me 3 hours. it took me exactly 1 hour to do from start to finish and i by no means rushed or had anything ready. I planned on it being 3 hours so i didnt care how quickly i worked at it. I do recommend to have needle nose pliers, says optional but its a must if you want to get some of the push plugs out.

    GrabberBlueDrifter

    Year: 2012 Submodel: GT Netzaberg, Germany

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    January 31, 2012

    looks awesome

    The rear diffuser took me about an hour and 45 mins to install and it looks great! it popped right into place after removing the stock part. Its a great look for any mustang and would suggest it if you want your mustang to look better then it already does.

    Jackattck777

    Year: 2011 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    January 28, 2012

    gt500 look!!!

    a much better look than stock. it the same piece that is on the gt/cs edition and gt500 rear. Awesome oem product for a great AM price!!!

    stangto50

    Year: 2011 Submodel: GT Danville, VA

    Helpful (1)

  • 5/5

    August 14, 2011

    Awsome part and customer service

    First part had a little scratch on the visible area but AM was happy to send me a replacement for free of charge which was in perfect condition. Thanks for the great customer service and email conversation from Karen at customer support. This diffuser gives aggressive look and it is made with high quality material. Installation was easy as well. Very straight forward. This is must have item for all the GTs V6s.

    Dan

    Year: 2010 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    November 15, 2017

    Best diffuser for a budget

    This is the best diffuser anyone can get for a v6. Of course without getting a $1000 TruFiber diffuser... but I wanted the most depth I could get and this CS one is the best looking. And with the extremely limited options for a v6, this is the way to go.

    Jacob

    Year: 2012 Submodel: V6

    Helpful (0)

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