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American Muscle Graphics Matte Black Quarter Window Accent (15-20 All)

Item 390409
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      Product Information

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


      • Matte Black Appearance
      • 4 Mil Wrapping Cast PVC Vinyl Material
      • Built-In Protective Clear Coat Layer
      • Up to 8 Years Outdoor Durability
      • Air Release Technology for a Smooth, Wrinkle-Free Surface
      • Rear Window Louver Look
      • Fits All 2015 to 2020 Mustangs


      Subtle, Retro Styling. If you want to keep your new, modern Mustang looking the part with a hint of retro styling, look no further than AmericanMuscle's Matte Black Quarter Window Accent. Styled to have the look of a quarter window louver, these window accents can give you the same effect without the installation hassle. Keeping the sleek look of the newer gens, these window accents allow you to pay homage to the 60's and 70's style Stangs, while also giving your ride a bit of an aggressive boost. This accent piece is also great for creating a blacked out look on darker rides.

      Highest Quality Vinyl. Upgrading your ride with AM's Matte Black Quarter Window Accents means getting the highest quality out there. AM Graphics uses high quality 4 mil wrapping cast vinyl with a built in protective clear coat. This vinyl is designed to last the wear and tear of outdoor weather for at least 8 years. This makes our vinyl extremely durable and superior to that of our competitors' calendared vinyl which can begin to degrade in a few years.

      Air Release Technology. Our Matte Black Quarter Window Accents feature air release technology. This technology features mini air channels that allow trapped air to be eliminated from underneath the vinyl. The air channels prevent the vinyl from bubbling and wrinkling for a smooth installation.

      Perfect Fit Guaranteed. All of the AmericanMuscle Graphics vinyl designs have been test fit, refined and then tested again on our very own fleet of vehicles, ensuring a perfect fit every time.

      Application. AM Graphics' Matte Black Window Accents will fit any 2015 to 2020 Ford Mustang Fastback/Coupe including the V6, EcoBoost, GT and Shelby models.

      Fitment: 2015 2016 2017 2018 2019 2020 Details

      MPN# 390409

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (26)

      Write a Review

      Ratings Summary

      4.8 out of 5 overall rating from 26 customers

      Installation Time: Less than 1 Hour

      • January 02, 2020

        5 2016 GT - Mikeymike949 Installation Time: Less than 1 Hour

        I love them!

        Gives the car a great look!. Goes perfect with window louvers.

        Helpful (0)
      • October 17, 2019

        5 2015 GT - LouisH Installation Time: Less than 1 Hour

        Awesome decal!

        Very easy to install and complete s my whole matte black look!! Wheels, stripes and this last little touch. I recommend these.

        Helpful (0)
      • September 09, 2019

        4 2019 EcoBoost - TMcKinley Installation Time: Less than 1 Hour

        Helps complete the look

        Installed with my HURST louvres and I think it finishes off the look. Take your time lining it up and don’t skip any steps. The ends may taper a bit, just trim them a little and you’re gonna get much better seal on the ends.

        Helpful (0)
      • August 27, 2019

        5 2017 V6 - Veronica Installation Time: Less than 1 Hour


        I liked these and they were easy to install. 10 mins installation. I used a spray to help move the pieces.

        Helpful (0)
      • July 19, 2019

        5 2017 GT - JVicierra Installation Time: Less than 1 Hour


        It's super easy to install no problems at all, and looks way cool!

        Helpful (0)
      • June 28, 2019

        4 2019 GT - DP Installation Time: Less than 1 Hour

        Quarter window accent

        Adds a ggreat look to the quarter window. Even more so if you have louvers. Easy install watch your spacing and alignment. Warning: these come with very pointed ends which means very little adhesive on the points. This will be a problem later with getting a wash rag caught on the ends. Also with age the sharp points will start to lift off. Easy fix is to take a new single edge razor blade and simply cut, ( don't cut back too far) the very sharp tips off. This did not affect the look at all. See my finished photo in the customer photos. Look foot the need for green color photo. A gloss black option would be nice as well.

        Helpful (0)
      • March 21, 2019

        5 2017 GT - RobertL Installation Time: Less than 1 Hour

        Looks great

        Bit fiddly to fit accurately but looks great on lightning blue GT

        Helpful (0)
      • February 15, 2019

        5 2018 EcoBoost - JasonP Installation Time: Less than 1 Hour

        Follow Instructions and Be Patient

        These will look their best if you're patient during the installation process. Use an X-Acto knife to cut the driver and passenger side apart - they come together on one sheet. Also, it's definitely worth the money to get the installation kit, which includes the liquid, knife, squeegee, and microfiber towel. Follow the instructions closely and be patient. Let the liquid soak into the transfer tape on top for at least 10 minutes and use the squeegee to hold down the decal when you're pulling off the transfer tape.

        Helpful (2)
      • February 14, 2019

        3 2018 EcoBoost - EugeneG Installation Time: Less than 1 Hour

        The ends do not adhere well

        I was careful with my prep. Smoothed it down properly.. waited and did everything by the directions on a 65 degree day. The narrow ends would not adhere. It looked tacky because of the narrow ends lifting so I removed and tossed in the trash.

        Helpful (2)
      • January 06, 2019

        5 2018 EcoBoost - Luke Installation Time: Less than 1 Hour

        Looks great

        Looks great when done. You'll want to take your time and cut around the vinyl as much as possible so you can see where it's being applied before you squeegee it out.

        Helpful (1)

      Questions & Answers (2 answers)

      2 Top Rated Questions

      I noticed it said (1) driver and passenger decal? So is it just one of the three stickers shown on the picture or is the three concidered as the (1) per side?

      • Purchase of this kit will include the decals for both driver and passenger side, which consist of eight (8) hash mark decals that go behind each quarter window, along with a squeegee and installation instructions.

      Helpful (1)

      Can you see through the graphic, when it is installed?

      • The American Muscle Graphics Matte Black Quarter Window Accent (15-18 All) vinyl will allow for viability out of the window when installed but will be lesser than without it installed.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Driver Side Quarter Window Accent
      • (1) Passenger Side Quarter Window Accent
      • (1) AmericanMuscle Instructions
      • (1) Squeegee

      Tech Specs

      • Fits: all 2015 to 2018 Mustangs except convertible styles
      • Material: Vinyl
      • Color: matte black

      Will It Fit My Mustang

      • Bullitt - 19, 20
      • EcoBoost - 15, 16, 17, 18, 19, 20
      • GT - 15, 16, 17, 18, 19, 20
      • GT350 - 15, 16, 17, 18, 19, 20
      • GT350R - 15, 16, 17, 18, 19, 20
      • GT500 - 20
      • V6 - 15, 16, 17

      AM Graphics Matte Black Quarter Window Accent will not fit convertible style Mustangs.