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

Market Price $65.00 You Save 12% ($8.00)
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$57.00

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  • Item 397318
  • MPN# Ford-50

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Ship to: Ashburn - 20149
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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

    CA Residents: Warning: California's Proposition 65

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

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    Questions & Answers (6)

    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)

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

    • 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.

    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)
    Post Your Question
    1 More Question
    I have Bama tuner,do you need to set the cooling fan with this Thermostat,thanks Glenn 1 answer

    People Who Bought This Item Also Bought

    Customer Reviews (49) Write a Review

    Overall Rating 4.7

    out of 5 stars

    Installation Time:Less than 1 Hour

    Installation Cost:0-$100

    • Performance Gain 4.061224 4.1
    • Fit 4.959184 5.0



    • 5/5

      Installation Time: Less than 1 Hour

      October 03, 2018

      Great stat

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

      JayG

      Year: 2018 Submodel: GT

      Helpful (0)

    • 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 (0)

    • 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 (0)

    • 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 (0)

    • 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 (1)

    • 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 (0)

    • 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 (1)

    • 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 (1)

    • 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 (1)

    • 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 (2)

    • 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 (1)

    • 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)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      May 28, 2018

      Reische Thermostat

      Does it’s job. Keeps the engine cool for when the Coyote needs awakening!

      Gratz

      Year: 2012 Submodel: GT

      Helpful (2)

    • 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 (3)

    • 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 (2)

    • 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.

      DarienC

      Year: 2013 Submodel: GT

      Helpful (7)

    • 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 (4)

    • 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 (2)

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