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Mishimoto Performance Racing Thermostat - 160 Degree (05-10 GT, GT500)

Market Price $57.99 You Save 17% ($9.99)
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$48.00

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  • Item 386667
  • MPN# MMTS-MUS-05L

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    Features & Details

    • Increase Cooling Efficiency
    • Reduce Engine Temperatures
    • 160 Degree Thermostat
    • Great for Modified Mustangs
    • Lifetime Warranty
    • Fits 2005-2010 GT, Bullitt and GT500 Mustangs
    Run Cooler. Increase the cooling efficiency of your S197 V8 Pony by upgrading to a Mishimoto Performance 160 Degree Racing Thermostat. By installing this racing thermostat, your high engine temperatures will be significantly reduced, which will help to prevent overheating and potential engine damage in modified and forced induction applications.

    More Power. Opening at a lower temperature over stock, this Mishimoto Performance Racing Thermostat ultimately aids in producing more power for your Pony. It will open at 160 °F, compared to the standard OEM factory thermostat at 180 °F, and will allow coolant to flow through the engine block sooner. This will reduce and maintain cooler engine temperatures and therefore, produce more power.

    Application. This Mishimoto 160 Degree Racing Thermostat is specifically designed for use on 2005 to 2010 Mustangs equipped with the 4.6L V8 engine, including the GT, Bullitt and Shelby GT500 models.

    Mishimoto's "No Questions Asked" Limited Lifetime Warranty

    Fitment: 2005 2006 2007 2008 2009 2010 Details

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • (1) Racing Thermostat
    Installation Info
    Will it fit my Mustang?

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    Questions & Answers (10)

    5 Top Rated Questions

    Does the thermostat come with a new gasket or will I need to purchase one?

    • The Mishimoto Performance Racing Thermostat will include a new gasket for proper installation and seal.

    Helpful (1)

    A new o-ring gasket doesn't come with thermostat, so do you sell the o-ring separately ??

    • We do not currently carry the o-ring separately at this point in time.

    Helpful (0)

    i received my mishimoto thermostat but did not see a o ring or gasket do i need to get one for my 2007 shelby cobra gt 500

    • It is not required to replace the o-ring when replacing the thermostat as it is built into the water outlet on the GT500s.

    Helpful (0)

    Does this part require a tune? i have a modified mustang with everything except forced induction and dont wish to spend another 250 for a new tune from my tuner.

    • No, this will not require a tune.

    Helpful (0)

    Is tune required to have this on?

    • No, a tune is not required once this is installed.

    Helpful (0)
    Post Your Question
    5 More Questions
    In the application section of the description of this product it says it will work with all 4.6 L motors including the GT500, but the GT500 Is a 5.4 L, so will this work on a 2010 gt500? 1 answer
    Does it come with the gasket if their is one that is? 1 answer
    I have researched Summit, PartsTrain, and Amazon and this thermostat (MMTS-MUS-05L) claims to fit the 2005 - 2010 Mustang V6 (4.0L) as well, but AM does not say this. Will this fit my 08 V6? 1 answer
    What direction does the floating pin on the outside ring need to be facing? 1 answer
    Could I use this in my car for everyday driving without doing damage? The only mod I have so far is Roush exhaust. 1 answer

    People Who Bought This Item Also Bought

    Customer Reviews (20) Write a Review

    Overall Rating 4.8

    out of 5 stars

    Installation Time:Less than 1 Hour

    • Performance Gain 4.421052 4.4
    • Fit 5 5



    • 5/5

      Installation Time: Less than 1 Hour

      October 08, 2018

      160 DEGREE THERMOSTAT

      I have a 2007 GT500 , started running hot . So I got the MISHIMOTO PERFORMANCE RACING THERMOSTAT 160 SO MUCH COOOOOOLER !!!

      Gt500

      Year: 2007 Submodel: GT500

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      September 20, 2018

      160 Degree Mishimoto Thermostat

      This Thermostat really helped my engine drop engine temps. Now my car performs alot better and stay alot cooler. Definately recommend you guys to do the same. Over satisfied with this item. Thanks American Muscle!

      David05GT

      Year: 2005 Submodel: GT

      Helpful (1)

    • 2/5

      Installation Time: Less than 1 Hour

      March 23, 2018

      Not cool!!

      Giving it a 2 Star.... Doesn’t really keep it at a constant rate of 160deg. All it did was made to where the car takes a bit longer to get to 180deg and stays there. Not sure if I got a diffective one or not, but I was expecting it to maintain a 160deg temp.

      LuisM

      Year: 2006 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      January 17, 2018

      Coolio

      Wow, I did not expect the engine temp to drop like this. I mean it's winter in Texas, but she runs significantly cooler now. The gauge used to be about 1/3 to half way between C and H. Now it stays in the 1/4 closest to C. Updated tune helps too. I don't know that I see a change in "performance" but she does run colder now.

      Skinny420

      Year: 2008 Submodel: GT500

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      January 08, 2018

      Stays cooler all the time!

      I had some overheating issues and tried replacing my hoses , reservoir bin and radiator in case there were coolant leaks, but to no avail. We ended up switching the thermostat housing, we so went with the Mishimoto Racing Thermostat...and let me just say : It's absolutely amazing! Not only has this item helped reduce overheating almost completely , but my "normal" temp is actually at 5/16 of the gauge, instead of halfway as previously marked. Initially i thought it was still warming up in the morning , but no! It's ready to go one it hits that mark and its definitely helped so much! Thanks AM!

      WesleyM

      Year: 2006 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      December 12, 2017

      wow this thing cools the temps...

      Ever since I installed the mishimoto thermostat my gt is running a lot cooler then stock.. I highly recommend this to anyone wanting to increase the longevity of their engine...

      Richard

      Year: 2005 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      November 28, 2017

      Mishimoto Performance

      So far so good. Easy install, and so far everything is good. The real test will be later in the year.

      Carl

      Year: 2008 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      November 23, 2017

      2010 Mustang GT performance updgrade

      This was recommended as part of a performance upgrade that included under drive pulley set, Alabama race tune, 3.73 rear gears, x pipe, short throw shift, KandN cold air, new clutch, flywheel and slave cylinder. After installing everything the pony now performs like it should.

      LarryR

      Year: 2010 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      November 14, 2017

      Mishimoto 160 Therm.

      Easy install, major difference in motor performance. It appears the Ford motors like to run cool for max. effiency and power. This is great on stock 4.6L 3v motors as well as, a must on supercharged and or turbo.

      TerryM

      Year: 2007 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      October 19, 2017

      Amazing temps

      Bought this for my E85 swap go help keep cool even more, after a 5 minute cool down from 2 dyno pulls temps went from 180-190s back down to 85 (outside air temp) works great.

      AlexCMiller

      Year: 2009 Submodel: GT500

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      October 17, 2017

      Huge difference in tempurature

      Didn't take long to install and has awesome benefits!!

      Carlos1man

      Year: 2008 Submodel: GT500

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      August 16, 2017

      Works good

      Works good Easy install Ahhhhhhhhhhhh good prudct

      ReyO

      Year: 2005 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      April 03, 2017

      Performance thermo

      Easy simple installation for a colder ride. With the addition of a Turbonotics system I needed something to help keep the engine cool. Along with a Megan Racing aluminum radiator and Mishimoto silicon hoses it's bound to stay cool.

      Frankenstien

      Year: 2008 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      March 14, 2017

      Ice Cold

      Installed it in about 2 and a half hours. Did a test run with it after a coolant flush and adding new fresh coolant with some Purple Ice. Now the GT's temp gauge won't get much above a quarter of the way running at 85 MPH and all warmed up. Good stuff. Keeping it real cool, hopefully will help battle the extreme heat that'll be coming soon too. Definitely a good product.

      StevenS

      Year: 2007 Submodel: GT

      Helpful (5)

    • 4/5

      August 01, 2016

      Cooling down the heat!

      I had this installed at the dealer with a coolant flush since I hit 75k on the clock. It's summertime in Florida and the heat is on in a big way. Since changing to the Comp stage 3 cams and the summer sun she's been running up there in temp when the A/C is on max. This change brought it back down to a comfortable temp range.

      Tims06GT

      Year: 2006 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      June 24, 2016

      Coolest product around!

      I put this in my 2005 Roush and went to Mid Ohio sports car course and ran the whole day. the temp compared to the OEM thermostat was night and day, it's safe to say I'll be buying more from American muscle and mishimoto.

      Gill

      Year: 2005 Submodel: Other

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      June 03, 2016

      Thermostat

      After looking around and doing some research I decided to purchased the Mishimoto Thermostat due to the oem one on my 2007 gt500 failing. No Complains so far, vehicle stays noticeably cooler going based of of temperature needle. Installation all in all was by far to simple. Thermostat was replaced in about 10 min (with dimple on thermostat facing upwards of course) and about another 10-15min bleeding the system.

      07Cobrabite

      Year: 2007 Submodel: GT500

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      January 22, 2016

      Great product defiantly recommend.

      This thermostat is perfect for a little racing here and there, I defiantly recommend it I can run my car with no worries now.

      Slowdoe

      Year: 2005 Submodel: V6 Miami, FL

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      December 10, 2015

      Good product

      This is a good mod if your pony has upgrades done to it. It helps the with your engines temp. I installed on an 05 which was fairly easy since these have the housing in between the radiator lines unlike the 07

      Buildingneverends

      Submodel: GT Grand Island, Nebraska

      Helpful (4)

    • 5/5

      Installation Time: Full Day

      September 23, 2015

      Running cooler

      My 05 Mustang GT supercharged as of late yesterday was running 12 to 14 degrees cooler. Overall, very happy with the results.

      Ed

      Year: 2005 Submodel: GT Chula Vista, CA

      Helpful (5)

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