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1987-1993 DCR Mustang Fox Body Coupe Quarter Window Replacements

Created by Jude Horstman / 10 min read
Date Created: 10/21/2022
Last Updated: 10/25/2022

Installing a set of new coupe quarter windows can be nerve-racking. But don't worry; we're here to walk you through our step-by-step guide to ensure you don't have any problems!

Viewing this install and using the information shared is subject to the terms set forth here - View the LMR Install Instructions Disclaimer.

FOLLOW: mustang , 79 93 mustang , fox body , window

1987-1993 Coupe Quarter Window Install

We will install a set of replacement DCR 1987 to 1993 Fox Mustang coupe quarter windows. Below, you'll follow the proper steps you need to take to install them into your car.

We've already removed the interior rear quarter panel trim and the factory quarter windows from the car. Be sure to check out the other removal articles if you haven't done so already.


Properly restore the exterior of your 1987-1993 Mustang coupe with a set of brand-new coupe quarter windows from Daniel Carpenter Reproductions! Deterioration due to UV exposure, harsh heat, wind, rain, and other elements may have caused pitting and fading on the edges of your quarter windows, which can quickly diminish the look of your Fox Body coupe. For years the easiest solution to this problem was to purchase a set of Carlite coupe quarter windows. Over time, Carlite stopped manufacturing these windows, which have since become tough to find, costing thousands of dollars for a NOS set. Another option has been to have your factory windows refinished, but this process can take months, and the results could be less than satisfactory. Daniel Carpenter Reproductions has set out to resolve this issue by engineering a factory-quality coupe quarter window set at an economical price! DCR redid the mounting style so that they are now attached using a standard window sealer using the studs merely hand tight to locate the window final torques specs are 2-3 inch-pounds. Thus getting a stronger bond to the chassis versus the older butyl rubber and risking the studs breaking from overtightening.


Required Tools

  • Phillips Head Screw Driver Set
  • Push Pin & Panel Removal Tools
  • Caulking Gun
  • 1/4" Socket Set
  • Clear Coat Safe Adhesive Remover
  • Microfiber Towels
  • Air Compressor w/ Blow Nozzle

Coupe Quarter Window Install Process


  1. So, depending on everyone's preference, you may take the opportunity to have the new quarter windows tinted before you install them. Use a clean microfiber towel and prep spray to remove any residues from the outside and inside of the car.

  2. Fox Body Quarter Window Install - Fox Body Quarter Window Install

  3. Place one of the quarter windows face down onto a microfiber towel on a workbench.

  4. Fox Body Quarter Window Install - Fox Body Quarter Window Install

  5. Use the provided sandpaper and scuff the back side of the quarter window where the silicone sealant will be applied.

  6. Fox Body Quarter Window Install - Fox Body Quarter Window Install

  7. Scuff the areas around each stud.

  8. Fox Body Quarter Window Install - Fox Body Quarter Window Install

  9. Blow away the debris with compressed air and wipe the scuffed areas with a microfiber towel and prep spray.

  10. Fox Body Quarter Window Install - Fox Body Quarter Window Install

  11. Install the tube of silicone into a caulking gun. Cut the tip to accommodate a 3/8-the bead of silicone.

  12. Fox Body Quarter Window Install - Fox Body Quarter Window Install

  13. Starting at the upper corner, begin applying a 3/8 bead of silicone. Work your way around the perimeter of the glass.

  14. Fox Body Quarter Window Install - Fox Body Quarter Window Install

  15. Now, you can apply silicone around each stud.

  16. Fox Body Quarter Window Install - Fox Body Quarter Window Install

  17. Position the quarter glass and ensure that the small tab is positioned underneath the roof rail molding and that the studs pass through their respective holes in the car's body.

  18. Fox Body Quarter Window Install - Fox Body Quarter Window Install

    Fox Body Quarter Window Install - Fox Body Quarter Window Install

  19. Lightly apply pressure to the glass and apply painter's tape across the glass and the car's body.

  20. Fox Body Quarter Window Install - Fox Body Quarter Window Install

  21. From the inside of the car, apply additional silicone to the inside perimeter of the window. It may help to smooth the area with your finger.

  22. Fox Body Quarter Window Install - Fox Body Quarter Window Install

    Fox Body Quarter Window Install - Fox Body Quarter Window Install

  23. From inside the car, install (7) nuts with mastic sealer to each stud. Run each down in a circular pattern until they are finger-tight, approximately 2-3 in-lbs. It's important not to overtighten these nuts as they can pull out from the quarter window!! Once you feel the slightest bit of resistance, STOP turning!!

  24. Fox Body Quarter Window Install - Fox Body Quarter Window Install

  25. Once the glass is installed, repeat these same steps for the other side. Allow 24 hours or longer, depending on the ambient conditions, for the silicone to fully cure.

  26. Fox Body Quarter Window Install - Fox Body Quarter Window Install

  27. Once the silicone has cured, you can perform a leak test on both sides. We used a moderate water stream to simulate a hard rain storm or a light-duty pressure washer closely.

    Slowly move the stream of water around the glass for a minute or two. Poke your head inside the car and inspect for any water that may be present. If there is, dry the surrounding area, and apply additional silicone as needed.

  28. Fox Body Quarter Window Install - Fox Body Quarter Window Install

  29. Before reinstalling your interior rear quarter panel and other interior trim pieces, it would be a good time to clean them or prep and paint them thoroughly.

  30. Fox Body Quarter Window Install - Fox Body Quarter Window Install

  31. You'll now want to reinstall the interior trim pieces. After that, you're good to go!

  32. Fox Body Quarter Window Install - Fox Body Quarter Window Install


Wrapping things up here, these coupe quarter windows from DCR are an obvious must-have restoration part for the 1987-1993 Fox Body coupes. I've personally installed a few sets of these, and every single set has been right on the money. As always, we hope this article has given you the value you need. Until next time; y'all know what to do for all things Fox Mustang; keep it right here with the real enthusiasts, LMR.com!



About the Video

DCR Mustang Fox Body Coupe Quarter Window Replacements (87-93) - Install & Review

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

Published on 2022-10-13
Properly restore the exterior of your 1987-1993 Mustang coupe with a set of brand-new coupe quarter windows from Daniel Carpenter Reproductions! Deterioration due to UV exposure, harsh heat, wind, rain, and other elements may have caused pitting and fading on the edges of your quarter windows, which can quickly diminish the look of your Fox Body coupe. For years the easiest solution to this problem was to purchase a set of Carlite coupe quarter windows. Over time, Carlite stopped manufacturing these windows, and have since become extremely hard to find, costing thousands of dollars for a NOS set. Another option has been to have your factory windows refinished, but this process can take months, and the results could be less than satisfactory. Daniel Carpenter Reproductions has set out to resolve this issue by engineering a factory-quality coupe quarter window set at an economical price! DCR redid the mounting style so that they are now attached using a standard window sealer using the studs merely hand tight to locate the window final torques specs are 2-3 inch-pounds. Thus getting a stronger bond to the chassis versus the older butyl rubber and risking the studs breaking from overtightening.

Shop DCR 1987-1993 Mustang Fox Body Coupe Quater Window Replacements - https://www.lmr.com/item/DCR-29710C-K/mustang-coupe-quarter-windows-87-93

*Chapters*
Intro - 0:00
Backstory - 0:20
New DCR Coupe Quarter Windows - 0:45
Install - 2:36
Leak Test - 4:20
Outro - 4:50

#LMR #mustang #foxbody
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Use of this video is subject to the terms as set forth in our LMR Install Video Disclaimer | https://lmr.com/page/lmr-install-video-disclaimer
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About the Author

Jude is our Social Media Specialist and has written for Late Model Restoration for 4 years. Jude has a deep passion for automotive culture, including cars, trucks, and motorcycles. Read more...