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Reische Performance Thermostat - 170 Degree (11-18 GT, V6, GT350; 12-13 BOSS 302)

Market Price $65.00 You Save 12% ($8.00)
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  • Item 397318
  • MPN# Ford-50

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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 2011-2018 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 2011-2018 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 Details

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

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    6 Questions / 6 Answers

    Ask a Question

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

    DavidD

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

      Rob D

    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?

    JhonnyA

    • 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.

      Rob D

    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?

    ZacT

    • 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.

      Rob D

    Helpful (0)

    Will I need a tune after this? If not, will my check engine light come on? Thanks.

    Sunny

    • Tuning the motor after installing a lower temperature thermostat is critical to guarantee proper internal temperatures. If you do not tune the vehicle after installing the thermostat, you can expect premature wear of the motor and possible detonation.

      AMKody

    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.

    GlennonP

    • 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.

      AMKody

    Helpful (0)

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

    GlennonP

    • 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.

      AshleyK

    Helpful (0)

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    Customer Reviews (35) Write a Review

    Overall Rating 4.8

    out of 5 stars

    Installation Time:Less than 1 Hour

    Installation Cost:$100-$250

    • Performance Gain 4.114286 4.1
    • Fit 4.942857 4.9



    • 5/5

      Installation Time: Less than 1 Hour

      May 18, 2018

      Great!

      My old stock thermostat kept getting stuck shut and my car was over heating severely I replaced it with another stock one but kept having the same problem. Reached 260 degrees on the cylinder heads and almost boiled over! Luckily I got it home in time before I melted something and ordered this thermostat right away! after a year I can confirm that this thermostat works great and I have had no problems with it. Stays at 189 during the winter and 190s in the summer. Also after some launches it steadies at 208 while my buddy's car had to cool down before we could go again. Overall very happy just need to do a coolant flush now. Also very surprised my car survived and is running great now! Built Ford tough is right!

      Colby

      Year: 2014 Submodel: GT

      Helpful (0)

    • 4/5

      May 08, 2018

      Does what its supposed to.

      Car runs cooler now. As expected with a lower degree thermostat!

      Rovero

      Year: 2015 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      April 10, 2018

      Surprisingly effective cooling upgrade

      For such a cheap and easy upgrade, this thermostat has made a pretty significant difference in temperature. I have a Roush Supercharged 13 GT that puts out a lot of heat, would usually sit at around 212-215 and would get above 220 when pushing the car. After installing the thermostat along with doing a coolant flush and updating my tune from VMP, the car sits at 189 and hits about 192 when driving hard. I haven’t seen 200 degrees since the install and tune revision. Pleasantly surprised and would recommend as a piece of mind upgrade.

      Darien

      Year: 2013 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      April 08, 2018

      Cool 5.0

      It stays at 190 now. Had to let it sit for 48 minutes before it 200

      GTCS

      Year: 2013 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      March 27, 2018

      Works flawlessly!

      I’ve run these thermostats in about 4-5 cars now and never any issues. Even with the stock Software it would run in the 192-199 range on my non PP GT Automatic (70 distilled water, two bottles of redline and 29 oem coolant) after the software update its steady at 192 and after a 1/4-1 mile pass it’s in the 185ish area.

      FrankNero

      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      March 16, 2018

      Cooler

      Flushed radiator and installed thermostat. Car is running cooler.

      FreeRide

      Year: 2013 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      March 13, 2018

      Simple install and running great!

      Car was at 75K miles and was going to flush the coolant. Decided to replace the thermostat with this one. Factory fit and finish and along with a tune knocked 5~8F from the normal operating temp and looking forward to pushing the car harder in the spring season. Install was a drop in replacement and took only 5 minutes more when doing a flush or swap.

      KBlueLegion

      Year: 2012 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      February 23, 2018

      Thermostat

      Good product, easy installation. Had to remove the air intake tube to get to the housing. Engine runs a lot cooler, new fan on/off settings where done after thermostat installation.

      Geo

      Year: 2016 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      February 13, 2018

      Exelent

      this product is fit in my car an function correct, my car is cool temperature and race very good

      Dragon2013

      Year: 2011 Submodel: V6

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      January 31, 2018

      Lower cylinder head temps

      Haven't seen my cylinder head temps touch 200 degrees since installing. My VMP stage two car kicks out some heat but I've yet to see anything in the 200's. I should've installed this sooner

      JewishSanta000

      Year: 2014 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      January 18, 2018

      Performance thermostat

      Just like it says when u buy it. It so far has dropped my temp by 6 to 8 degrees at least and not bad for the price.

      Dustin15

      Year: 2015 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      January 02, 2018

      Reische Thermostat

      It does the job well. Runs much cooler and is a must for boosted applications.

      1g4my2g

      Year: 2015 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      December 23, 2017

      170 thermostat

      It does it’s designed for to help keep things cool

      Alex

      Year: 2013 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      December 22, 2017

      Reische Performance Thermostat - 170

      car was running around 198 now with the new 170 stat installed car is running around 188 which helps considerably during the florida summer

      Dl

      Year: 2012 Submodel: V6

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      November 16, 2017

      Works great!

      With the factory 180’ tstat under normal highway use my CHT was between 216’ f and 226’ f. With the Reische 170’ my CHT is now between 194’ f and 204’ f. Definitely runs cooler now!

      AaronD

      Year: 2014 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      November 04, 2017

      Works

      My car is tuned so I needed this so my Fan didn’t run all the time works as it should, brought my temps down

      RyanF

      Year: 2016 Submodel: GT

      Helpful (2)

    • 3/5

      July 13, 2017

      Good product

      I bought this product for my 2014 V6. It is a great product, but haven't noticed a difference. Car runs great, but temp are same as b4 probably because of bbk 73mm Throttle Body. But it is a great product and love AM.com

      Ryan

      Year: 2014 Submodel: V6

      Helpful (2)

    • 4/5

      Installation Time: Less than 1 Hour

      July 09, 2017

      Good product

      Teamed up with the Lucas Super Coolant additive will allow your car to run a lot cooler.

      GenesisG

      Year: 2016 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      July 08, 2017

      Definitely cooler!

      Could really tell the difference from the 170 on a supercharged 2014. I started to notice that my car would sit higher in the 209ish temp. With this thermostat I now will sit at 199 cylinder head for much longer. As long as I am not driving on a very long highway trip at 80mph this thermostat keeps it cooler. Once I compliment it with a larger radiator I'm sure I will have an extended benefit!

      JamesG

      Year: 2014 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      June 27, 2017

      Excellent

      Cylinder heads temps run 10 degrees cooler. Cooler temps, less detonation = more power.

      JO

      Year: 2015 Submodel: GT

      Helpful (2)

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