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Mishimoto Racing Thermostat (96-04 GT, Mach 1, Cobra)

Market Price $55.20 You Save 13% ($7.20)

$48.00

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  • Item 80224
  • MPN# MMTS-MUS-96

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Features & Details

  • Keeps Engine Running Cooler
  • Great for Modified Mustangs
  • Fits 1996 to 2004 4.6 GT, Bullitt, Mach 1 and Cobra
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 154° fahrenheit (68 C) than the standard OEM factory thermostat 190° fahrenheit (88 C) 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 1996 to 2004 Mustangs equipped with 4.6L V8 engine, including the GT, Bullitt, Mach 1, and SVT Cobra.

Mishimoto's "No Questions Asked" Limited Lifetime Warranty

Fitment: 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

What's in the Box
  • (1) Thermostat
Installation Info
Will it fit my Mustang?
  • Bullitt - 01
  • Mach 1 - 03, 04
  • Cobra - 96, 97, 98, 99, 01, 03, 04
  • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04

Most Helpful Reviews

5/5

Runs so much cooler!

With my 97 Cobra no matter what I do I was overheating. With this new Thermostat no more overheating! It's absolutely great!

Helpful (1)

5/5
Awesome

It did more than expected and reduced temps by more than 30%. Thanks American Muscle!!!!

Helpful (1)

Overall Rating 4.5 out of 5 stars
Read All 32 Reviews

Customer Photos (3) Submit Your Photo

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3 Questions / 3 Answers

Ask a Question

will this thermostat cause issues during cold weather operation?

pelt199

Answer This Question I need this answered (0) (0)

How does this thermostat effect the heating system in the winter time, will the interior still get as hot?

HeadlessHorseman

  • The car will still heat up to the full operating temperature, however, if the thermostat is open, and a high volume of air is passing through the radiator, the coolant flowing through the heater core will be at a lower temperature. If a lesser amount of air is passing the radiator, the heat in the coolant will not dissipate as easy, and the coolant will be a higher temperature.

    AMJEFF

    Good Answer (0) (0)

Question Resolved

Is this a fail-safe thermostat? If the thermostat fails it does it in the open position rather then closed.

Gilly

  • Mishimoto thermostats are designed to fail open.

    AMSam

    Good Answer (0) (0)

Answer This Question I need this answered (0) (0)

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Customer Reviews (32) Write a Review

Overall Rating 4.5

out of 5 stars

Installation Time:Afternoon

Installation Cost:0-$100

  • Performance Gain 4.44 4.4
  • Fit 4.12 4.1



  • 5/5

    October 13, 2016

    The Coolest Stang Around

    I have to say that I am very pleased with the Mishimoto thermostat. It works just like they said that it would. My 1998 mustang gt idle at normal temperature range but when I begin driving it drops my temperature down in a very safe zone. I needed a thermostat that would allow my stang to run cooler since my spark and timing is advanced. And it doesn't interfere with my heat at all. Once again a great product and brand from American Muscle. Highly recommended..

    Roni

    Year: 1998 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    May 22, 2015

    Runs so much cooler!

    With my 97 Cobra no matter what I do I was overheating. With this new Thermostat no more overheating! It's absolutely great!

    AMCoalK

    Year: 1997 Submodel: Cobra

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    October 08, 2012

    Awesome

    It did more than expected and reduced temps by more than 30%. Thanks American Muscle!!!!

    Eleanor97

    Year: 1997 Submodel: GT Pearl,MS

    Helpful (1) (0)

  • 5/5

    October 25, 2010

    brrrrrrrrr cold

    Its a shame this thermostat is ~154* F, thus causing the car to never go into closed loop

    johnny b

    Helpful (9) (4)

  • 5/5

    Installation Time: Less than 1 Hour

    May 11, 2012

    An easy install. Some gasket customization.

    My new thermostat keeps my car cool, prior to changing it my car ran at about 220, now it runs at about 170. When building high horsepower engines lower temps are necessary to gain big numbers and it also promotes engine longevity. American muscle had my order shipped promptly and I had the thermostat in less than 24 hours. Overall this is an ideal product for anengine build. Small items are often overlooked but they can make all the difference.

    Nino97

    Year: 1997 Submodel: Cobra Boston, MA, USA

    Helpful (3) (0)

  • 4/5

    Installation Time: Less than 1 Hour

    July 31, 2012

    Nice thermostat, but no stock fit.

    Though this thermostat will open up at 154*, it doesnt fit as well as one would hope. The rubber seal that it comes with is a tad to large, and I ended up not using it. Thermostat does open up fairly quickly though. I would not recommend this to anyone just looking for a simple replacment thermostat.

    x7Sage7x

    Year: 2001 Submodel: GT Az

    Helpful (2) (0)

  • 5/5

    February 21, 2010

    Moshimoto Makes Great Products

    I bought this because my '01 GT was running a little hot. Moshimoto makes great products and i've never had any problems with any of their products. Soon to come is the Moshimoto radioator and fans, by then my pony will be running the perfect tempurature, which means more power :)

    Matt P.

    Year: 2001 Submodel: GT

    Helpful (6) (3)

  • 5/5

    Installation Time: Shop Install

    January 27, 2012

    Amazing the difference!!!!!!!!!!!!!

    This is my first car and i absolutly love it, it has been my daily driver for nearly two years and i enjoy it everyday, the one problem that i had with it was the original theromstat made the car run a bit hotter than what i was comfortable with the gauge sat at around the "a" in normal on the temp gauge and when you were sitting in traffic it would go even higher. i have been very cautious with when i hear a noise that isnt normal i have the car in the shop. and luckly for me the time came for me to fix the issue early in the northern Indiana winter, just as it started to get cold i took my car to fill it with gas and when i pulled out to go back home my water jacket on the original intake manifold failed, this meant a whole new upper intake and so on, so this meant a new thermostat as well, i can honestly say that this is an amazing product. i instantly noticed a difference in the way the car drives and feels, not to mention how it makes the car stay cool when you floor it just to hear the Custom Exhaust thats now coupled with the new Dorman Intake (that was also purchased through American Muscle) the car has more power and sounds meaner. and in the end stays cooler, i would say this is an very good upgrade for any car in any climate. if you do the upgrade you will notice an increase in your throttle response as the car heats up and overall feel in power.

    Black96GtVetteNightmare

    Year: 1996 Submodel: GT Fort Wayne, IN

    Helpful (3) (1)

  • 5/5

    October 16, 2010

    Thermostat

    Didnt notice a difference, ended up buying one from Ford. AM good website tho

    Jose

    Helpful (9) (7)

  • 1/5

    August 07, 2010

    No difference

    Not sure why but I installed this and I see no change in engine temerature at all. The guage is exactly where it was originally and the engine bay and engine seems as hot as it ever was.

    Dean

    Helpful (10) (9)

  • 5/5

    Installation Time: Shop Install

    January 27, 2012

    Cooler Mach1:)

    I had heating problems with my 2004 Mach1, so I changed the stock thermostat to this mishimoto one and I did notice much less heat and a lot more cooler :)

    xElMach1x

    Year: 2004 Submodel: Mach 1 California, bay area

    Helpful (2) (2)

  • 5/5

    May 23, 2010

    amazing product

    Wow..this product works as advertised! My pony never gets warmer pass the 1/4th mark! I would highly recommend this item to any one! American Muscle fast shipping made this a total breeze!

    gt_greasemonkey

    Helpful (6) (8)

  • 5/5

    Installation Time: Full Day

    January 28, 2012

    Love it Love it, you the best

    is the best, i would tell someone about this product:)

    Jose10

    Year: 2002 Submodel: GT Woodbridge,VA

    Helpful (0) (3)

  • 5/5

    Installation Time: Less than 1 Hour

    July 09, 2015

    Fixed my 2001 svt mustang heating issue

    My heat temp was getting up to 240. I installed this along with the royal purp. Now I hover around 175! Highest it got was 205 at idle then went back down. Install was easy the therm is located by the battery it's on the bottom. I drained the coolant from the petcock which is on the opposite side. No need to jack up the car just did it as is sat. I have a kenne bell supercharger which makes mine heat up. I bought the edelbrock water pump long. It was to long I think I will just get a refund .

    Ajwill307

    Year: 2001 Submodel: Cobra 307

    Helpful (0) (1)

  • 4/5

    Installation Time: Less than 1 Hour

    November 25, 2016

    Runs cooler but had to reuse old gasket

    Happy with the reduced temperature. Disapointed that the O-ring is no where near the size needed to fit. I ended up re-using the old gasket against my better judgement but I needed the temps to come down.

    Jysun

    Year: 1997 Submodel: GT

    Helpful (0) (0)

  • 1/5

    August 27, 2016

    No difference

    I installed this on a 98 GT and I see no change in engine temperature at all. The engine is as hot as it ever was. I don't know how this product can have so many good reviews.. It's a waste of money.

    blackstang

    Year: 1998 Submodel: GT

    Helpful (0) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    June 27, 2016

    2003 ford mustang gt vortec v3 10 psi

    Works great... lowers running temp = better hp happy car happy mustang owner

    Brian

    Year: 2003 Submodel: GT

    Helpful (0) (0)

  • 4/5

    Installation Time: Less than 1 Hour

    June 15, 2016

    Mishimoto Racing Thermostat

    I needed a new thermostat since I overheated a couple of times, so I went with this one. I haven't overheated since installing it so it's doing its job. Engine bay does seem to stay a little cooler. I'm not sure if I'm the only one having this problem but since install it's been throwing codes like crazy. Hopefully a new tune will fix that. Good replacement part, go ahead and get one.

    Ethan03

    Year: 2003 Submodel: GT

    Helpful (0) (0)

  • 4/5

    Installation Time: Weekend

    May 22, 2016

    Factory thermostat replaced with performamce.

    Work perfect, reads cooler and work perfect with upgrade cooling system.

    Powerhouse

    Year: 1996 Submodel: GT

    Helpful (0) (0)

  • 4/5

    Installation Time: Less than 1 Hour

    April 19, 2016

    Works Great!

    Works exactly how its described. Only problem was the rubber seal was too big for it to fit so I had to use the old one but haven't had any problems with it.

    Ryan

    Year: 2002 Submodel: GT

    Helpful (0) (0)

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