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Reverse Glow Gauge Insert; White Face; 140 MPH (87-89 V8)

Item 100579
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      Product Information

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


      • SVT Cobra Inspired Styling
      • White Face with Blue Lettering by Day
      • Reverse Glow at Night
      • Installs Over Stock Factory Gauges
      • Includes Overlays and Inverter/Switch
      • Fits All 1987 to 1989 V8 Mustangs


      SVT Cobra Styling. Upgrade your Foxbody Pony's boring factory gauge cluster with a White Face Reverse Glow Gauge Insert Kit for SVT Cobra inspired styling. This white gauge cluster insert will update your speedometer from a top speed of 85mph to 140mph. Recalibration is necessary for correct readings.

      Reverse Glow. By day the gauge face is white with crisp clean dark blue markings, but by night the numbers glow bright blue against a black face making these gauges distinctive and easy to read.

      Installs Over Factory Gauges. This 140mph white gauge insert overlay was designed to install by slipping over the existing gauges and does not require removing the needles.

      Application. This 140mph White Face Reverse Glow Overlay is designed to fit all 1987 to 1989 V8 Mustangs with the factory gauge cluster.Please Note. Professional recalibration of your Mustangs speedometer will be required as this overlay insert reads 140mph verses the factory gauge reading 85mph.

      SR Performance

      Fitment: 1987 1988 1989 Details

      MPN# 100579

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (23)

      Write a Review

      Ratings Summary

      4.4 out of 5 overall rating from 23 customers

      Installation Time: Afternoon

      • March 13, 2020

        5 1989 GT - JoeG Installation Time: Afternoon

        Easy install

        Great product really looks good and bright made the dash look new

        Helpful (0)
      • October 01, 2019

        5 1988 GT - RM51 Installation Time: Less than 1 Hour

        Looks great, easy install!

        This was a straight forward installation. The wiring was a bit delicate, but if you take your time it will work out okay.

        Helpful (1)
      • August 24, 2019

        3 1989 LX - 89Stang Installation Time: Afternoon

        Better wires

        Once I finally got the gauges installed they looked good but, the wires that are in the kit are entirely too thin. When splicing the inverter into the headlight switch it would not get a good connection due to the wires being so thin. Also the center gauge piece is too small and does not line up correctly.

        Helpful (0)
      • August 21, 2019

        1 1994 GT - joe Installation Time: Afternoon

        did not work

        cheap garbage.... I couldnt get all the lights to work so I just ripped it out

        Helpful (0)
      • January 20, 2019

        5 1989 GT - Jodyo Installation Time: Less than 1 Hour

        Reverse glow gages

        I absolutely love them they look great and I was having a hard time finding them with 140 mph speedometer nice can't get over how great they look thanks a lot I would recommend this to everyone one

        Helpful (2)
      • July 20, 2018

        5 1988 GT - JasonG

        Looks great!

        Haven’t installed yet but look great. Will let you know when done

        Helpful (3)
      • June 10, 2018

        5 1989 GT - LawrenceM Installation Time: Afternoon


        Take your time and mark where your gauges are pointing. It requires the smallest amount of trimming where you can't see.

        Helpful (3)
      • September 06, 2017

        2 1989 LX - GlennT Installation Time: Afternoon

        Not that impressed

        Middle piece was wrong. Wires to switch where barely soldered. Pulled right off. Had to reconnect them.

        Helpful (5)
      • August 18, 2017

        4 1987 GT - kramerdad1 Installation Time: Afternoon

        Reverse Glow Gauge Overlays-Review

        The overlays look and work great, once you figured out how to install them over the OEM gauges, They do not install directly over the gauges , you have to maneuver them. . The problems I experienced were these, the overlays really should have a small square or dot or double sided tape to keep then in place and I unscrewed the screws holding the OEM face plates on ( you have to remove the left side to get at the nuts on the alternator gauge), I used the screws and scotch tape on the top and bottom edges to secure the overlays, the second problem was the instructions did not make it clear how to fit the left and right gauge overlays over the OEM gauges without taking the needles off first. I finally figured out that if you moved the overlay under the needle and pushed it as far towards the opposite edge you could get the overlay to clear the humpy part at the back of the needle . Otherwise it was worth the effort.

        Helpful (4)
      • April 24, 2017

        5 1988 GT - FaisalO

        Glow Gauge is fit in my car

        good AAA installed the Glow Gauge than we check the speed meter is not same number it's up number more than 10 km my old gauge oem , but the design is very good.

        Helpful (4)

      Questions & Answers (8 answers)

      5 Top Rated Questions

      Do these come with detailed instructions for installation? It doesn't look like much if any wiring is involved, just plug and play correct? Thank you!

      • Yes, an installation guide will be included upon the arrival of your package. As for the install, yes it is as straight forward as it seems, just unplug the old stuff and plug this right in. However professional recalibration of your Mustangs speedometer will be required as this overlay insert reads 140mph verses the factory gauge reading 85mph.

      Helpful (0)

      If you have a speedo only ranging to 85mph will these gauges work?

      • Hello! This White Face Reverse Glow Gauge Insert will work on 85mph speedometers looking to convert to 140mph as long as re-calibration of the speedometer is performed.

      Helpful (0)

      I have an 88 Mustang mclaren with the Speedo reading 85mph. Can the 140mph fit over the original one with no see through issues? I know I’ll recalibrate speedo but want to make sure it looks correct/right.

      • The White Face Reverse Glow Gauge Insert uses its own lighting for the reverse glow functionality, so no bleed through will be created. This will work flawlessly on 85mph speedometers looking to convert to 140mph, as long as re-calibration of the speedometer is performed.

      Helpful (0)

      do i need to change the colors of any of the bulbs for it to glow the right way?

      • You will not need to change any of the bulbs for the White Face Reverse Glow Gauge Insert to work properly.

      Helpful (0)

      I see the description said 87-89 mustang will this not fit a 90 mustang Gt

      • This particular version of the White Face Reverse Glow Gauge Insert will not fit a 90 GT. However, we do carry one that will here:

      Helpful (0)
      Post Your Question
      3 More Questions
      I have a 1989 Mustang LX 5.0 HO. It has a factory installed 140 mph speedometer with a black face. Will this gauge insert fit and the speedometer work without calibration? Thanks. 1 answer
      Who can perform the "professional recalibration"? I would like to replace the look of my gauge cluster with this kit, but who would I get to perform the required calibration? Is this something that can be performed by my local Ford dealership or would I have to track down some specialty shop? 3 answers
      How bright are these? I replaced my lights with another brand and i'm not happy with the brightness during dusk. can you see them in daylight? 3 answers

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Speedometer Overlay
      • (1) Tachometer Overlay
      • (1) Volt/Temp Overlay
      • (1) Oil Pressure/Fuel Level Overlay
      • (1) Center Warning Lights Overlay
      • (1) 12V power inverter/switch

      Tech Specs

      Will It Fit My Mustang

      • GT - 87, 88, 89
      • LX - 87, 88, 89

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