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Mishimoto Racing Thermostat (86-95 5.0L)

Item 80223
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Ship to: Ashburn - 20149
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      Product Information

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


      • Keeps Engine Running Cooler
      • Great for Modified Mustangs
      • Fits 1986 to 1995 5.0 V8 Mustangs


      Run Cooler. The Mishimoto Ford Mustang Racing thermostat promotes greater cooling efficiency throughout your Pony's engine and significantly lowers high engine temperatures produced by modified and forced induction applications.

      More Power. The Mishimoto racing thermostat opens up at a lower temperature (68°C, 154°F) than the standard OEM factory thermostat (88°C, 190°F), allowing the coolant to flow through the engine block sooner reducing and maintaining cooler engine temperatures helping to produce more power.

      Application. This Mishimoto Racing Thermostat is specifically designed for use on the 1986 to 1995 GT or Cobra Mustangs equipped with 5.0L V8 engine.

      Mishimoto's "No Questions Asked" Limited Lifetime Warranty

      Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 Details

      MPN# MMTS-MUS-86

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (25)

      Write a Review

      Ratings Summary

      4.9 out of 5 overall rating from 25 customers

      Installation Time: Afternoon

      Installation Cost: 0-$100

      • March 25, 2020

        4 1995 GT - Rulis Installation Time: Less than 1 Hour


        Stang runs a lot cooler. Especially while running on the freeway, temp really goes down.

        Helpful (0)
      • February 15, 2020

        5 1994 GT - LaneR

        Performance thermostat

        Huge difference from stock keeps it in the middle at all times sometimes even below works great if you are having heating issues

        Helpful (0)
      • May 29, 2019

        5 1990 LX - BrianD Installation Time: Afternoon


        Car runs great now. Teml doesn’t go above 150 degrees. Just note that you might have to take off the rubber o-ring on the outside

        Helpful (0)
      • May 01, 2019

        5 1994 GT - Mike Installation Time: Less than 1 Hour

        Mishimoto racing thermostat

        Works like it should once installed. i would recommend buying this thermostat. It came packaged well and shipping was fast.

        Helpful (2)
      • September 18, 2018

        5 1992 GT - ChrisL Installation Time: Less than 1 Hour

        Keep it running cool

        Lets just say rock cold. Don't mess around with those bottles that say it will lower the temps. Just buy the thermostat. My temps are rock cold dead on 160.

        Helpful (0)
      • July 17, 2018

        5 1987 LX - Saleen87 Installation Time: Shop Install Installation Cost: 0-$100

        Major temp change

        Installed new Mishimoto radiator, Liquid Chill coolant and the racing thermostat. These items in combination made a major change in operating temp of my 87 supercharged Saleen on hot summer days and in heavy traffic, never gets even close to overheating.

        Helpful (3)
      • May 01, 2018

        5 1995 GT - AndrewB Installation Time: Less than 1 Hour

        Well worth it!

        Everything to be expected from a low temp thermostat!

        Helpful (1)
      • February 27, 2018

        5 1995 GT - CharlesC Installation Time: Less than 1 Hour


        My 95 GT was over heating. After I did a full flush of the engine and radiator along with installing this thermostat it runs great.

        Helpful (3)
      • August 24, 2017

        5 1992 LX - Mystang Installation Time: Less than 1 Hour

        Fancy thermostat

        I don't drive the car that often to really notice a difference, however, I am glad I replaced it.

        Helpful (2)
      • August 17, 2017

        5 1993 GT - ThomasB Installation Time: Less than 1 Hour

        Racing Themostat

        I just replaced my stock radiator with an SR Performance Aluminum Radiator and replaced the thermostat with this Mishimoto Racing Thermostat and installed a new water pump in my 93 all stock GT with 100K miles on it. It runs much cooler now. I plan on adding some mild upgrades that should add another 40 to 50 horse power to the car this new coolant system I chose should be good enough to keep me cool enough

        Helpful (3)

      Questions & Answers (3 answers)

      3 Top Rated Questions

      Is there a difference with what plug and wire setup you should use with this?

      • This thermostat is a replacement. You will not need to change the connections to install this part.

      Helpful (0)

      Is this thermostat only for a GT or for a LX too?

      • Hi,This Mishimoto Racing Thermostat will fit all 86-95 Mustangs equipped with the 5.0L motor including the GT,LX and Cobra

      Helpful (0)

      does this thermostat make the car to heat up faster on a cold around 25 to 30 degree

      • The Mishimoto Racing Thermostat (86-95 5.0L) provides greater cooling efficiency which will significantly lower high engine temperatures. It is going to keep the engine cooler. It will not cause the engine to heat up faster.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Thermostat

      Tech Specs

      Will It Fit My Mustang

      • Cobra - 93, 94, 95
      • Cobra R - 93, 95
      • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95
      • LX - 87, 88, 89, 90, 91, 92, 93
      • Other - 86

      Fits 5.0L V8's Only

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