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MMD by FOOSE GT350 Style Rear Diffuser (15-17 GT Premium, EcoBoost Premium)

Item 401441
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      Product Information

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


      • MMD by Foose GT350 Style Rear Diffuser
      • Designed by Chip Foose
      • Injection Molded TPO Material
      • OEM Fit and Finish
      • Straight Forward Installation
      • Backup Sensor Compatible
      • Designed for Premium Chassis Packages Only (Trim Levels: 200A/201A/400A/401A)
      • Fits 2015-2017 GT Premium and EcoBoost Premium Mustang Models


      Custom FOOSE Styling. Add a custom show car appearance to your 2015-2017 Premium Package Mustang by installing a MMD by Foose GT350 Style Rear Diffuser. Designed by the talented and world renowned custom car builder Chip Foose, this Diffuser flows nicely with the lines of your Premium Package equipped Mustangs rear bumper cover.

      Quality Construction. MMD manufactures their Foose Rear Diffuser from high pressure injection molded, high-strength thermal plastic olefin (TPO) using the original OEM CAD data from Ford to ensure a perfect fit. TPO 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.

      Straight Forward Installation. Installation of the MMD by Foose Rear Diffuser is simple and straight forward. However, it will require permanent modification to the stock rear bumper cover to remove the factory diffuser. Installation can be completed in about two hours.

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

      Application. This MMD by Foose GT350 Style 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).

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

      MMD by FOOSE

      Fitment: 2015 2016 2017 Details

      MPN# 401441

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (2)

      Write a Review

      Ratings Summary

      5 out of 5 overall rating from 2 customers

      Installation Time: Afternoon

      • December 28, 2018

        5 2015 GT - pga4trp Installation Time: Afternoon

        Easiest upgrade yet

        Fit is perfect, color (Silver) is perfect. Just a little nervous putting holes in the trunk but if I can do it anyone can. Just go slow, use the little strips they supply as a template and use one drill bit size bigger than the instructions say. Piece of cake.

        Helpful (3)
      • April 14, 2018

        5 2017 GT - MichalM Installation Time: Afternoon

        Solid product

        Great solid product it’s not flimsy like most brands that cost double

        Helpful (8)

      Questions & Answers (4 answers)

      4 Top Rated Questions

      Can you put quad tips on this ?

      • This diffuser is not compatible with quad-tip rear valances.

      Helpful (0)

      Why can’t I install this on my GT Base? Mine doesn’t have one so I’d like to add it.

      • lt cannot be installed on base models due to differences in the rear bumper/diffuser setup.

      Helpful (0)

      Does this cover the center light under the bumper? Can't tell in the pictures.

      • This will not cover the light in the center under the bumper, that will remain as it comes from factory.

      Helpful (0)

      Is there a see-through mesh/vent at the end of the "domes" on either side of the reverse light, or is it just a flat plastic with a mesh pattern? Can't tell for sure from the pics. Got a better close up pic?

      • The MMD by FOOSE GT350 Style Rear Diffuser will have a mesh pattern, but will not be mesh all the way through.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Rear Diffuser

      Will It Fit My Mustang

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

      Fits Premium Chassis Packages only (Trim Levels: 200A/201A/400A/401A)