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Reische Performance Thermostat - 170 Degree (11-19 GT, V6, GT350; 12-13 BOSS 302)

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  • Item 397318

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    Features, Video & Details

    • Custom Built from OEM Parts
    • Includes OEM diaphragm and Bypass Control
    • Ensures Maximum Cooling Efficiency
    • Direct Replacement Installation
    • Recommended for Tuned Motors, but Tuning Not Required
    • Protects Motor from Damaging Heat
    • Cooler Temps for More Timing Advancement
    • Fits 2011-2019 GT, V6, GT350, '12-'13 BOSS Mustangs

    Review & Installation Video

    Review & Install Video

    This is the Reische Performance 170-degree thermostat for 2011 and newer GT, V6, and GT350 Mustangs, and 2012 to 2013 Boss Mustangs. You're gonna wanna check this out if you're looking for a way to keep engine temps cooler, whether you've done some light modifications or tuning, or some more serious mods. Once you start modding, adding more power, and tuning your Mustang, you're then looking at potentially creating more heat. Over time, and depending on how much more heat you're looking at, you can run into a list of problems, from some very minor things, to some more serious things, like engine wear and detonation. A lower temperature thermostat like this one here can protect your engine from those issues and leave you with a more reliable, better-running car. The install for this is gonna be easy. It's a one-out-of-three wrenches on the difficulty meter, and you can plan on spending an hour getting this installed.The thought process here is that keeping your engine cooler has always been a way to get more longevity out of the car, and open the door to more power. Aftermarket thermostats like this one open sooner, which means that the coolant will circle to the rad sooner, which is then gonna keep the engine temperatures lower. And having a cooler running engine has long been known as a way to avoid detonation in super-charged cars, since it keeps the cylinders cooler.One of the nice things about this thermostat is that it's made with an OEM diaphragm and bypass controller. These are two critical parts of the thermostat that need to be fully functional so that this thermostat can work properly. This isn't a universal unit, it's a direct fit, and the OEM parts guarantee maximum efficiency.Now, customers usually ask about re-tuning to deal with the cooler engine temps and fan timing, and this is something that you're gonna wanna consider. And then again, most of you are probably installing this thermostat on cars that are already getting re-tuned due to the mods that you are or have already added, especially if we're talking about a super-charger. Cooler engine temps mean you can have a more aggressive tune with more timing, without detonation or knock, so overall, more performance.When it comes to price, you can expect to pay about $65 for this thermostat. This is currently the only 170-degree thermostat option on the site, and it's the only one made with OEM parts. You do have the option of going with a 160-degree thermostat from Mishimoto if you wanted to spend a little bit less money.As far as the install goes, this is an easy one. It's a one-out-of-three wrenches on the difficulty meter, and you can plan on spending an hour getting this installed. You will need a new bottle of coolant to top off the system once you're done with the install, and of course, either a jack and jack stands or a lift.You'll remove the plastic underbody work, drain the rad, and remove the intake pipe. Once that's out of the way, you'll have room to get to the thermostat housing. Now, that's held in by two bolts, so you're gonna remove those two bolts and remove the stock thermostat. The new thermostat installs exactly the same way. Just be sure to make sure you're using the O-ring and the gasket that comes with the new thermostat because the stock ones won't work properly with the new one. You're gonna reinstall your intake pipe, and you're ready to refill the coolant system, but don't forget to burp the system and get the air bubbles out. After you check for any leaks, you can reinstall the plastic underbody.That's going to wrap things up for the Reische Performance 170-degree thermostat, but you can always check it out more online, right here at americanmuscle.com.

    Protect that Power. If you're adding some bolt-on performance to your mustang, you're adding more heat and power loads. The Reische Performance Thermostat operates at 170 degrees compared to the 180 to 195 degrees of your OEM unit, which allows your motor to run cooler, longer, under higher output. Installing this thermostat is a simple but critical investment in protecting your engine.

    Tune it? Cool it. If you're advancing timing on your motor or operating a custom tune, a lower temperature thermostat is a critical investment in engine life. Lower temperatures allow for safer timing advancement and tuning without causing engine wear or detonation, which can ruin your motor.

    Made to Fit Mustangs. Unlike cheaper, generic units that are "universal", each Reische Performance Thermostat is made using the same diaphragm and bypass control as OEM thermostats. Each unit is modified by hand with U.S made parts to ensure they run at the right temperature for your Mustang.

    All-Weather Capable. Running a lower temperature thermostat has been said to reduce performance – but with the Reische's consistent operation and 170-degree "sweet spot", no drivers have reported any loss of power or MPGs in colder weather.

    Application. The 170-Degree Reische Performance Thermostat is specifically designed as a direct replacement-upgrade for all 2011-2019 GT, V6, GT350, and 2012-2013 BOSS Mustangs.

    Tuning Note. While no tuning is required for installation, we do highly recommend lowering your fan settings for more consistent coolant temperatures.

    Fitment: 2011 2012 2013 2014 2015 2016 2017 2018 2019 Details

    MPN# Ford-50

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    What's in the Box
    • (1) Thermostat
    • (1) Gasket
    • Coolant Ratio/Additive Recommendations
    Installation Info
    Will it fit my Mustang?

      Customer Photos (2) Submit Your Photo

      View All 2 Photos

        Questions & Answers (5)

        5 Top Rated Questions

        I’m looking for a thermostat that fits a 2015 2.3L Turbo Ecoboost. Does this fit?

        • The Reische Performance Thermostat will not fit 2.3L Ecoboost engines.

        Helpful (0)

        If I already have a map installed on my ECU with my handheld tuner, all I need to do is drop this in correct?

        • The Reische Performance Thermostat - 170 Degree does not require a tune, however we strongly recommend a tune to accommodate for the lower opening temperature of this thermostat. Any tune you have now would not have this accommodated for unless you specified this with your tuner.

        Helpful (0)

        I have heard complaints that the engine fans don't turn once this part is installed. I am considering buying this along with the Bama x4 tuner. Will the handheld tuner be able to adjust the engine fans or will I have to do that elsewhere?

        • The Reische Performance Thermostat will lower the temperature at which the thermostat opens by approximately 25 degrees, reducing the frequency of the electric cooling fans being commanded on due to lower coolant temperatures and not reaching their on point as often. Cooling fans on/of temps can be adjusted with a tuner, but it is not often recommended as this can push the car into running at temps that are not good for performance.

        Helpful (0)

        This was in one of your buyers comments,Make sure to get a tune to change your fan settings! So what is it(need one or not),Thanks Glenn.

        • If you’re advancing timing on your motor or operating a custom tune, a lower temperature thermostat is a critical investment in engine life. Installing this thermostat without loading a new tune can wear the motor or potentially lead to engine detonation.

        Helpful (0)

        I have Bama tuner,do you need to set the cooling fan with this Thermostat,thanks Glenn

        • You should not need to make any adjustments in order to have a proper installation of the Reische Performance Thermostat. It is designed to be a direct replacement.

        Helpful (0)
        Post Your Question

          Customer Reviews (56) Write a Review

          Overall Rating 4.7

          out of 5 stars

          Installation Time:Less than 1 Hour

          Installation Cost:0-$100

          • Performance Gain 4.160714 4.2
          • Fit 4.964286 5.0



          • 5/5

            Installation Time: Less than 1 Hour

            June 11, 2019

            On point

            Didn't know the oem thermostat was 180 degrees should of gone with the 160 but still gets the job done!

            MartinQ

            Year: 2019 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            May 28, 2019

            Works Great!

            Still haven't changed the fan temps but still noticeably lower temps while moving 80 F ambient air.

            Nick13gt

            Year: 2013 Submodel: GT

            Helpful (0)

          • 3/5

            Installation Time: Less than 1 Hour

            April 03, 2019

            Reische Performance Thermostat

            Product works as advertised. I previously installed a Reische 3 years ago and the rubber material failed, causing coolant to bypass and the motor not to warm up. Hoping the replacement will last longer.

            brightredlt1

            Year: 2015 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            March 26, 2019

            Works great!

            Definitely well worth the buy if you are looking to lower your engine temp. My temps dropped around 25 degrees from the stock thermostat. I do recommend a tuner to adjust your fan to accommodate the thermostat.

            KeithGT

            Year: 2016 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            March 15, 2019

            Reische Performance 170 degree thermostat

            Quality you can feel. Easy to install, comes with all you need.

            EdR

            Year: 2017 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            December 03, 2018

            Works great

            Running way cooler than before. 2.3 TVS on my car. No tune needed.

            OxfordMach1

            Year: 2013 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            November 23, 2018

            awesome

            works and drop in temps of 10 degrees to about 185, and CHT drops from 214 to 192.

            JakeL

            Year: 2014 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            October 03, 2018

            Great stat

            Lowered temps 15-18 * well worth it , easy to change

            2018

            Year: 2018 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Less than 1 Hour

            October 01, 2018

            A must for tuned coyote

            works as advertised I highly recommend it along with having your tuner adjust the radiator fan to come on sooner

            Paininthe

            Year: 2011 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Less than 1 Hour

            September 30, 2018

            Work Good

            Work good on a super charged car keep it nice and cool,

            HOOK

            Year: 2014 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Less than 1 Hour

            September 19, 2018

            Does as it says

            Went in easy, does what it does. Pretty sure it's working at 170 degree. I drained the coolant, when I installed my Mishimoto radiator so it was a no brainer to get this part installed at the same time. Unbolted the hose, popped out the old one, you may need a tool to get it out but be careful as to not damage the stock thermostat.

            PaulL

            Year: 2015 Submodel: GT

            Helpful (1)

          • 1/5

            Installation Time: Less than 1 Hour

            September 18, 2018

            Not worth it

            Not that big difference, you wont see the cylinder head temperature 170f at all, it’s almost the same as the stock thermostat, if you really want to see a difference go with 160f it’s even cheaper.

            KhalidA

            Year: 2013 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Less than 1 Hour

            September 04, 2018

            Cool under pressure

            The Reische 170* T-stat works and fits as described. After idling for approximately 30 minutes ECT never went over 185. Highway driving has shown a consistent 10-12 * reduction in both ECT and CHT temps which now range from 180-185 and 190-198 respectively

            JasonP

            Year: 2017 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Less than 1 Hour

            September 02, 2018

            temp is now 13 degrees lower!!

            even though stock stat was 180 in my 14gt this lowered my temp from 198 to 185 according to my sct programmer on a hot day driving around town,and i bought motorcraft orange coolant since that's the only coolant recommended that doesn't cause sludge build up

            Waistedmymoney

            Year: 2014 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Less than 1 Hour

            August 26, 2018

            Pen quality

            Installed and reprogrammed cooling fans, makes slight difference as the original is 180 degree

            CalebJ

            Year: 2014 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Less than 1 Hour

            August 23, 2018

            Great product!

            Definitely a must if doing heavy modding. Helped me keep my coolant temps down 20 degrees

            TylerD

            Year: 2014 Submodel: GT

            Helpful (4)

          • 5/5

            Installation Time: Less than 1 Hour

            August 14, 2018

            Best!!!

            Does exactly why it’s suppoed to, just don’t forget to tune the fans! Added a P1X Procharger, running a little hot so i added this bad baby, fixed all of that!!!

            Glen

            Year: 2017 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Less than 1 Hour

            August 12, 2018

            Good quality

            I installed this thermostat because my car was running hot after this install my ect runs about 180 degree even when the temperature outside is 110

            SajarawiG

            Year: 2014 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Less than 1 Hour

            July 30, 2018

            Reische Performance Thermostat

            definitely works. temps are down.. engine runs cool.. doing 3-4 gear pulls on a blown motor with 750 HP temps stay low and constant..

            MarkC

            Year: 2015 Submodel: GT

            Helpful (2)

          • 1/5

            Installation Time: Less than 1 Hour

            June 30, 2018

            Didn’t change a thing

            Replaced entire cooling system and added this but nothing changed in temperature even with a Bama tune. Waste of money

            Anthony

            Year: 2012 Submodel: GT

            Helpful (2)

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