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SpeedForm Vintage Quarter Window Louver; Gloss Black (15-20 Fastback)

Item 403361
Market Price $59.99 You Save 17% ($10.00)
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$49.99 (pair)

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      Review & Installation Video

      Product Information

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


      • Five Slot Open Louvered Design
      • Gloss Black Finish
      • Vacuum Form ABS Construction
      • Simple Peel and Stick Installation
      • Driver and Passenger Side Louvers Included
      • Fits all 2015-2020 Fastback Mustang Models


      Vintage Styling. A set of SpeedForm Vintage Quarter Window Louvers are a great way to add the vintage styling of the muscle car era to your 2015-2020 Fastback Mustang. With a five-slot open louver design, these SpeedForm Louvers will give your S550 Mustang bold, muscular styling while still allowing you to see clearly out of your c-pillar windows.

      Quality Construction and Materials. SpeedForm's Vintage Quarter Window Louvers are manufactured from vacuum-formed acrylonitrile butadiene styrene (ABS) plastic for its light weight and long lasting durability. These Quarter Window Louvers are then completed in a smooth gloss black finish for classic good looks.

      Peel and Stick Installation. No messy glue or drilling is required for installation. These SpeedForm Vintage Quarter Window Louvers are designed to attach to the factory C-Pillar glass with the supplied 3M doubled sided automotive bonding tape for a quick and easy installation. Just clean the surface, peel the backing and stick in place - it's that easy.

      Recommended Styling Upgrade. When installing exterior quarter window louvers or scoops on your Mustang, it is recommended to add a set of quarter window blackout decals to hide the ugly back side that wasn't meant to be seen by human eyes. See part number 386505.

      Application. These gloss black SpeedForm Vintage Quarter Window Louvers are designed to fit all 2015-2020 Fastback Mustangs, including the V6, EcoBoost, GT, GT350 and GT500 models. Sold as a set of two, one driver side and one passenger side.


      Fitment: 2015 2016 2017 2018 2019 2020 Details

      MPN# 403361

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (83)

      Write a Review

      Ratings Summary

      4.3 out of 5 overall rating from 83 customers

      Installation Time: Less than 1 Hour

      • February 22, 2020

        5 2019 GT - 1fststang Installation Time: Less than 1 Hour

        Great louvers

        Love the style and the fit. Would recommend to anyone

        Helpful (0)
      • February 19, 2020

        4 2019 Bullitt - BBBullit Installation Time: Less than 1 Hour

        Not bad for the price

        The fit is a liitle off on the lower corners. Had to build up with extra double sided tape to prevent a gap. Needed to use 3m adhesive promoter tape alone would not hold louvre to the window. Sill on after 1 month. Not sure about long term. Do like the look.

        Helpful (0)
      • February 19, 2020

        5 2019 EcoBoost - LaserDawg1981

        Quarter window louver

        Love the look of them. Haven't installed yet, haven't had time. I will soon

        Helpful (0)
      • February 14, 2020

        1 2016 GT - Jaeger50 Installation Time: Less than 1 Hour

        Get what you pay for

        Only had them for a month and it’s already cracking and chipping. Heard good things about this place not so sure now.

        Helpful (0)
      • January 20, 2020

        5 2018 GT - Matadortito Installation Time: Less than 1 Hour

        Sharp and great looking

        Exactly what you expect. Great quality and the gloss black just looks sharp. With the 2018 gloss black accents it's a perfect match. There was a slight overlap on the edges but a little push here and there and I managed to get it just right.

        Helpful (1)
      • January 18, 2020

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


        Super easy to install. Im 17 and I've never came across a mod like these louvers. Super easy application and fits great.

        Helpful (0)
      • January 01, 2020

        4 2017 GT - Mike Installation Time: Less than 1 Hour

        Good Value for Cost

        They fit great and were easy to install. Make sure to apply pressure so that the edges don't leave a gap.

        Helpful (0)
      • October 26, 2019

        5 2019 GT - hafgod Installation Time: Less than 1 Hour


        Really good fit, looks great with gloss black paint

        Helpful (1)
      • October 24, 2019

        1 2019 EcoBoost - Kthomas

        Paint Peeling

        I’ve had these on my car about 4-5 months and already the paint is peeling off them. So disappointed!! Love the look, but nothing I have bought from AM for my 2019 Mustang has held up. I’m done.

        Helpful (1)
      • October 09, 2019

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

        Fit perfect , meaner look!

        Got here quick , took me about 15min to install both Definitely made the car look a lot better. .

        Helpful (0)

      Questions & Answers (8 answers)

      5 Top Rated Questions

      Does this come with 1 or 2 louvers? So what i'm asking is it $50 for 1 Louver?

      • The SpeedForm Vintage Quarter Window Louver is sold in a set of two so you will have one for the driver side and one for the passenger side.

      Helpful (4)

      So I guess once installed, you won't be able to clean the window (glass) underneath louver right?

      • Once they are installed it will be very difficult to clean the window yes.

      Helpful (1)

      Are these available prepainted

      • Unfortunately they are only offered in an unpainted application at this time.

      Helpful (1)

      Will this fit on my 2019 mustang ecoboost, and will this permanently damage my rear windows

      It comes with two already? Or do I need to buy two of them ?

      • These are sold in pairs.

      Helpful (0)
      Post Your Question
      3 More Questions
      Any suggestions on getting these to stick better? I purchased these last month and LOVE the look of them, but am having a hard time getting the bottom front corner to stay stuck. It is due to the louvers are pretty flat so trying to get them to stick down along the contour of the car (from top to bottom) is difficult. I even bought some stronger 3M double sided tape made for auto items like this and that bottom corner keeps popping up. We did clean with alcohol first as recommended.. I really want to make them work because the gloss black and style is exactly what I am looking for. Help! 1 answer
      Once installed what’s the best way to clean your louvered window? 1 answer
      Do these install on the glass itself? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Passenger Side - Quarter Window Louver
      • (1) Driver Side - Quarter Window Louver
      • (1) Roll of Automotive Bonding Tape

      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

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