Free Shipping On Orders Over $49. Details

Talk to a Mustang Expert
Mon - Sun, 8:30 AM EST - 11:00 PM EST
Win 1 of 2 $15,000 Mustang Builds! Enter To Win!

MP Concepts GT350 Style Rear Diffuser (15-17 GT Premium, EcoBoost Premium)

Market Price $400.00 You Save 25% ($100.01)
Starting At

$299.99 (each)

+ $49.00 Handling Fee with FREE Shipping

  • Item 397418
  • MPN# 397418

Local Install Shops

Quoted installation from $125

View 3 Shops

near 19355 (change)

Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.

Will this fit your Vehicle?

In Stock Ships same business day.
Ship to: ASHBURN - 20146
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features, Video & Details

    • Aggressive GT350 Style Rear Diffuser
    • OEM Textured Black Finish
    • Made from Polypropylene
    • Minimal Cutting Required
    • Fits 2015-2017 GT and EcoBoost Mustangs
    • Designed for Premium Chassis Packages Only (Trim Levels: 200A/201A/400A/401A)

    Review & Installation Video

    Review & Install Video

    Race Inspired Appearance. Add a serious race look to your 2015-2017 Mustang with the MP Concepts GT350 Style Rear Diffuser. This is designed to fit only premium bumpers, but it will enhance the whole look of your Pony thanks to durable construction and personal touches.

    Quality Construction. Made from polypropylene, the MP Concepts GT350 Style Rear Diffuser is light weight, but durable. It will be able to handle whatever the road throws at it.

    Ready to Go. The MP Concepts GT350 Style Rear Diffuser comes with an OEM textured black finish, so it's ready to install without any painting needed.

    Installation. There is cutting required, so some tools and mechanical skill are needed.

    Application. The MP Concepts GT350 Style Rear Diffuser fits 2015 to 2017 GT and EcoBoost Mustangs equipped with the factory Premium Chassis Packages only (Trim Levels: 200A/201A/400A/401A).

    Please Read. If you are having trouble determining what style bumper your Mustang is equipped with please refer to the comparison image above.

    Fitment: 2015 2016 2017 Details

    What's in the Box
    • (1) Diffuser Panel
    • (2) Reverse Light Brackets
    • (2) Tail Pipe Inserts
    Installation Info
    Tech Specs
    Will it fit my Mustang?

    You Might Also Like

    Customer Photos (4) Submit Your Photo

    View All 4 Photos

    More Products You Might Like

    16 Questions / 14 Answers

    Ask a Question

    Will this fit/connect right up to the roush valence?


    • The MP Concepts GT350 Style Rear Diffuser will be compatible with the Roush models, as these will have the same bumper as the premium trim levels.

      Rob D

    Helpful (1)

    Why does this product only fit the premium models and is there any solution to getting a GT350 diffuser on a base model GT?


    • The MP Concepts GT350 Style Rear Diffuser will only fit premium models as they have a different rear end and different mounting spots. We do have the GT350 rear diffuser and bumper that will work for the base models.


    Helpful (1)

    What is the min and max quad tip inch to fit in those holes ? I do have roush axle backs bought from AM but need to buy quad tips to fit into that.


    Please clarify whether this will work with the standard corsa sport or extreme catback system. In one posted question your staff says "Yes" and in other they say "No"


    will this exhaust be compatible with the magnaflow competition catback quad tips


    • Unfortunately, this rear diffuser will only work with exhaust tips that are around 3.5" and will not work with the Magnaflow exhaust that has 4" exhaust tips. The exhaust tips wouldn'tfit properly with this diffuser. 


    Helpful (0)

    Will this fit a 2018 model mustang?


    • This rear diffuser is designed for 15-17 GT/EcoBoost premium models only and has not been confirmed to fit a 2018 Mustang.


    Helpful (0)

    People Who Bought This Item Also Bought

    Customer Reviews (6) Write a Review

    Overall Rating 4.3

    out of 5 stars

    Installation Time:Less than 1 Hour

    • Protection 4.333333 4.3
    • Fit 4.666667 4.7
    • Appearance 4.833333 4.8
    • Bang For Your Buck 4.666667 4.7

    • 4/5

      July 12, 2018

      Easier way to switch to quad tip.

      Installation wasn't too difficult and fit pretty well. By far the cheapest and easiest way to switch to a quad tip exhaust. Worked decently well with my roush axleback when i installed with flowmaster FLO-15307 exhaust tips.


      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      January 30, 2018

      Gt350 style Diffuser

      The item Fitment was perfect the only thing is when you take it to get it installed make sure they put some type of Special glue to make it stick to the bumber your body shop or whoever puts it on will know..not everything that gets installed fits perfect in makes your mustang look a lot Cool


      Year: 2016 Submodel: EcoBoost

      Helpful (4)

    • 2/5

      December 04, 2017


      I just got my diffuser after extra delivery time don’t why it took two weeks also when I opened the box and inspected the pieces I noticed about 5 plastic tabs where bend and broken off the tabs that connect the exhaust pipe panel .. and on top of that I got no install guide and no light panel inserts so I talked to them and told them I already hadn’t to postpone install and that I don’t have much off time . And to my luck I have to wait another week and a half to install my set up what a buzz kill .. completely don’t understand


      Year: 2017 Submodel: GT

      Helpful (3)

    • 5/5

      November 07, 2017

      Same lower piece for MPConcepts GT350 Bumper

      I bought the GT350 MP Concepts bumper and the lower valence was damaged. After obtaining a spare valence for the premium bumper “only” it does also work as a replacement if you originally bought the MP Concepts rear bumper.


      Year: 2017 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      July 20, 2017

      Rear vallance

      Got the new mod in and it was just the look my pony needed.. I was worried that the texture of it would be heavy and not match the rest, but it was even more smother that the factory's which is a good look!! Very nice !!!! U don't need to pull the bumper to replace it as well ..


      Year: 2016 Submodel: GT

      Helpful (6)

    • 5/5

      Installation Time: Afternoon

      June 29, 2017

      Looks beautiful and aggressive!

      Really brings out the aggressive look of the mustang! Beautiful!


      Year: 2017 Submodel: EcoBoost

      Helpful (3)

    Related Mustang Categories