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Roush Black Face 20 PSI Boost/Vac Gauge - Mechanical (79-19 All)

AmericanMuscle no longer carries the Roush Black Face 20 PSI Boost/Vac Gauge - Mechanical (79-19 All). Please check out Ford Mustang Gauges & Gauge Pods for an updated selection.
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Features & Details

  • "Roush" Logo on Black Face with White Markings
  • 2 1/16" (52.4mm)
  • Range 30 inHg to 20 PSI
  • Mechanical
  • Made in the U.S.A.
  • Fits All 1979-2019 Mustangs
Functional Style. The Black Face Roush Boost/Vac Gauge not only looks great in a force inducted Mustang, but is also a crucial part of monitoring critical engine systems.

Blue Or White Lighting. Roush designed this Boost Gauge so you can choose between white or blue lighting, or a combination of the two for day or night use.

Made in the U.S.A. This Roush Gauge is proudly made in the USA to the highest standards from the highest quality materials and components available to ensure a long, trouble free life.

Boost/Vac Pressure. This Roush Boost/Vac Pressure Gauge is the popular 2-1/16" full sweep style gauge that accurately measures your system from 30 In Hg (vacuum) to 20 PSI (boost).

Recommended Upgrade for 05-14 Mustangs. If you have a 2005-2014 Mustang, check out the ordering options above to add a high quality Roush Vent Gauge Pod. This pod will give you optimal viewing of your new gauge. Be sure to select the proper year range for your Mustang.

Application. This Black Face Roush Mechanical Boost/Vac Gauge is for use on any force inducted 1979 to 2019 Ford Mustang, including LX, V6, EcoBoost, GT, Bullitt, Mach 1, SVT Cobra, BOSS 302, Shelby GT350 and Shelby GT500 models.

Technical Notes. Includes 6 ft. tubing and 1/2" NPT adapter/fitting.

Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 Details

MPN# 421247

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (1) Gauge
  • (1) Vaccum line
  • (1) Light
  • Fittings
Installation Info
Tech Specs
Will it fit my Mustang?
  • Boss 302 - 12, 13
  • Bullitt - 01, 08, 09, 19
  • Cobra - 93, 94, 95, 96, 97, 98, 99, 01, 03, 04
  • Cobra R - 93, 95, 00
  • EcoBoost - 15, 16, 17, 18, 19
  • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19
  • GT350 - 15, 16, 17, 18, 19
  • GT350R - 15, 16, 17, 18, 19
  • GT500 - 07, 08, 09, 10, 11, 12, 13, 14
  • LX - 87, 88, 89, 90, 91, 92, 93
  • Mach 1 - 03, 04
  • Other - 79, 80, 81, 82, 83, 84, 85, 86
  • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17

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Customer Reviews (31) Write a Review

Overall Rating 4.6

out of 5 stars

Installation Time:Afternoon

Installation Cost:0-$100

  • Fit 4.766667 4.8
  • Appearance 4.935484 4.9
  • Bang For Your Buck 4.612903 4.6

  • 1/5

    Installation Time: Afternoon

    October 06, 2018

    Poor design - terrible instructions

    Terrible design for the line attachment to the gauge. There's no bite to it. Worked in my car for 3 years / 1,500 miles before it started leaking. I'm at the top end of the gauge (20 psi). Instructions are complete garbage. Longest part of the install is searching in the internet for which wires to splice into.


    Year: 2011 Submodel: GT500

    Helpful (4)

  • 5/5

    August 01, 2018

    Nice gauge

    Love the change in color from day to night. Bright led light but not distracting.


    Year: 2001 Submodel: GT

    Helpful (5)

  • 3/5

    April 09, 2018

    Alright but lacking in parts

    I purchased this to put on my 2013 Mustang with a Roush phase 3 supercharged on it. The guage is very high quality and looks great. But I haven't gotten to Installing it yet, because it comes with just a t fitting and very lacking instructions; but the Roush blower came with a different style of fitting that a boost gauge is supposed to fit on. I ended up having to go to an auto parts store and buy a 1/4 inch hose barb to install it. The hose is quite hard to fit over the hose barb but I did it with some needle nose pliers and boiling water.


    Year: 2013 Submodel: GT

    Helpful (5)

  • 1/5

    January 11, 2018

    Can't install.

    Nice gauge, but can't get the pod anymore to install. Wish I would of known before purchase.


    Year: 2014 Submodel: GT

    Helpful (8)

  • 5/5

    Installation Time: Afternoon

    November 23, 2017

    Ecoboost Mustang

    I used this on my 16 ecoboost premium, which didn't have the performance pack factory gauge. The blue matches the other instruments perfectly. I wish Roush made more gauges like this, also it only reads to 20 psi, and my car can exceed that on occasion but still a fantastic gauge, recommend this to anyone.


    Year: 2016 Submodel: EcoBoost

    Helpful (9)

  • 5/5

    Installation Time: Less than 1 Hour

    July 24, 2017


    This was such an easy install and looks/works FANTASTIC! I paired it up w/ the "VENT POD" kit for my Roush Mustang for an even EASIER INSTALLATION PROCESS!! Nice touch to MY BABY!!


    Year: 2007 Submodel: Other

    Helpful (7)

  • 5/5

    Installation Time: Less than 1 Hour

    July 11, 2017

    Boost guage

    Boost guage works perfectly with my procharger! Installed with roush air pod perfect fit!


    Year: 2012 Submodel: GT

    Helpful (6)

  • 5/5

    Installation Time: Afternoon

    April 16, 2017

    Must have for superchargers!

    Buy it, install it and keep grinning ear to ear as the boost sets you back in your seat!


    Year: 2017 Submodel: GT

    Helpful (8)

  • 5/5

    Installation Time: Less than 1 Hour

    February 20, 2017

    great gauge

    Works great on my paxton GT, no buzzing with included fittings Excellent lighting during the day, little bright at night however I did not hook it up to the dimmer switch. I did change the included clear vacuum tubing to normal black vacuum hose, the clear tubing can collapse with heat.


    Year: 2016 Submodel: GT

    Helpful (8)

  • 4/5

    Installation Time: Less than 1 Hour

    February 07, 2017

    Needs better directions

    The gauge needs better directions that let you know what line to splice into and where you need to put the boost line. It's not to complicated but you have to do unnecessary work. Also it's very bright even if you hook it into the dimmer line so you'll need to tint it to match the dash lights. I have it white for days and blue for night and it looks great in the Roush vent pod.


    Year: 2008 Submodel: GT

    Helpful (9)

  • 5/5

    Installation Time: Less than 1 Hour

    December 09, 2016

    Roush boost gauge

    Looks great and love that the face color is optional.


    Year: 2005 Submodel: GT

    Helpful (8)

  • 5/5

    Installation Time: Shop Install

    December 28, 2015

    Roush Boost Gauge

    After receiving my item and looking at the installation instructions, they were very vague. I contacted Roush and American Muscle to ask them how to install it, and they pretty much told me the same thing the paper showed. Long story short, I ended up taking it to Ford, and they installed it for me. It looks really good and clean; however, it is really bright at night. It reflects off of the driver side window (driver vent install with vent pod) and it's kind of bothersome. Maybe getting some tint to place over the gauge is a good idea. Overall, I definitely like the look of it, and plus, it's good to know how many pounds you're stomping out!


    Year: 2014 Submodel: Other Panama City Beach, FL

    Helpful (8)

  • 5/5

    Installation Time: Less than 1 Hour

    December 14, 2015

    The Perfect Touch

    I added this Roush boost gauge to my Paxton supercharged coyote. The install was about as simple as you can get for a 12v gauge; I chose to tie into the dimmer switch and at lower voltage I can get the gauge to turn red (looks great at night). I would definitely recommend this gauge to anyone looking to monitor vacuum/boost.


    Year: 2014 Submodel: GT New Jersey

    Helpful (8)

  • 5/5

    Installation Time: Less than 1 Hour

    September 18, 2015

    Love it!!

    super easy install, through firewall and tap into vacuum line. Coupled with roush vent pod is a must. Looks super clean and functions perfectly. It works flawlessly to provide accurate boost levels for vortech v3 supercharger.


    Year: 2012 Submodel: GT Kathleen, GA

    Helpful (8)

  • 5/5

    Installation Time: Afternoon

    August 27, 2015

    ROUSH boost gauge.

    This gauge looks great with my reverse glow dash lights. I would suggest using the instructions from AM rather than the ROUSH instructions that it comes with for installation.


    Year: 2004 Submodel: GT Mississippi

    Helpful (8)

  • 5/5

    Installation Time: Afternoon

    August 27, 2015

    Roush boost guage install

    I love the looks of the roush boost guage, the instructions were a bit confusing but I dont claim to be a wiring genius. The overall performancd and looks is very sharp and mounted into my vent looks stealthy when its off.


    Year: 2007 Submodel: GT Crestview, fl

    Helpful (8)

  • 5/5

    Installation Time: Afternoon

    August 14, 2015

    Excellent Boost Gauge

    I installed this gauge using the vent pod from Roush, along with installation of the Phase 1 Kit on my 2014 5.0 (you know, brand bandwagon). Installation was really easy: I highly recommend the use of an add-a-circuit to the passenger kick panel. You will want to run the red (needle power) to an ACC 12V, the blue or white (blue or white glow if your only using one color) with the red ACC 12V, and black (ground) to a bolt on the bottom of the steering-column. The gauge is quite bright; you could add some light tint, or pickup an LED dimmer adapter. Personally, the brightness doesn't bother me. Highly recommend the Roush gauge!


    Year: 2014 Submodel: GT North Cali

    Helpful (8)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    October 22, 2014

    roush boost gauge

    Great product and awesome look! Great price for what you get!


    Year: 2013 Submodel: Other

    Helpful (8)

  • 5/5

    Installation Time: Less than 1 Hour

    August 31, 2014

    boost/vac gauge

    Like the way u can make this this light ,red,blue, white Adds to the gauges in a gt 500..


    Year: 2007 Submodel: GT500 Decatur, IL,

    Helpful (8)

  • 5/5

    Installation Time: Less than 1 Hour

    July 26, 2014

    Great product

    Very nice, white in day, blue in night! Easy to installed


    Year: 2007 Submodel: Other Saint-Hubert, Longueuil, QC, Canada

    Helpful (7)

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