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Mishimoto

Mishimoto MMTS-WRX-15 Racing Thermostat Compatible With Subaru WRX 2015-2021 Silver

  • Based on 31 reviews
Condition: New
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Eligible for Return, Refund or Replacement within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: Only 4 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, Sep 6
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Features

  • Direct fit for 2015+ WRX and 2014+ Forester XT
  • Lower activation temp allows coolant to flow through the engine earlier
  • Maintains lower temperatures and extends engine life
  • Mishimoto Activation: 165.2F (74C) / OEM Activation: 190.4F (88C)
  • Mishimoto Lifetime Warranty

Description

The Mishimoto racing thermostat for the 2015+ Subaru WRX will promote greater cooling efficiency in your stock or modified FA20DIT. Once the engine is fully warmed up, the Mishimoto racing thermostat will open at a lower temperature than standard thermostats. This allows coolant to flow through the engine sooner, which reduces and maintains cooler engine temperatures. The Mishimoto WRX racing thermostat is the perfect addition to your street or track WRX and is a direct replacement for the stock thermostat. As with all our products, this thermostat includes the Mishimoto Lifetime Warranty.

Manufacturer: ‎Mishimoto


Brand: ‎Mishimoto


Model: ‎MMTS-WRX-15


Item Weight: ‎1.44 ounces


Product Dimensions: ‎6.48 x 6.48 x 6.48 inches


Country of Origin: ‎China


Item model number: ‎MMTS-WRX-15


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎MMTS-WRX-15


OEM Part Number: ‎21210AA221


Date First Available: June 11, 2015


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Sep 6

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Works very well if you have a larger radiator!
First, you should upgrade your stock radiator to a larger aftermarket radiator to really make this product worth a noticeable difference. If you just change this Mishimoto thermostat, all you're doing is prolonging the max temperature range. This thermostat only allows your engine to cool earlier, but not does not cool faster nor does it make your engine run cooler. You'll need to replace your stock radiator to a much large one to run cooler. Where I live, it gets around 98°F~101°F from May to Oct, with humidity above 70% on average. Overall product works great, fits like a glove, installation on an Subaru FA20 engine could be easier, but well worth it. Coupled with a larger radiator, my car now runs around 179°F ~ 186°F on average (was 199°F ~ 204°F) , and stays below 220°F even when I'm hauling a$$! Love it! ... show more
Reviewed in the United States on July 27, 2017 by Joseph C.
    • You’re gonna need a tune for this
Works good, cel popped up expectedly.
Reviewed in the United States on November 9, 2021 by Alexander Frey
    • Thermostat
Great so far! Recommend installing new radiator and fans with the thermo stat but thats just my opinion
Reviewed in the United States on August 1, 2020 by Carlos Dominguez
    • Overpriced trash
This is the 3rd out 5 products that I have purchased and has failed within a months time. A state they offer a lifetime warranty which most likely they do but what they don't inform you of is you have to pay for shipping of that new replacement product. Which in my mind doesn't make any sense as it's their fault for selling a defective product. Why do I need to pay for their mistakes?! ... show more
Reviewed in the United States on October 5, 2023 by Bernie
    • Great product
Product was a perfect fit and keeps the car cooler than the stock thermostat.
Reviewed in the United States on October 28, 2020 by Eric Mccormick
    • Lowered temps
Installed in my 2016 wrx. Lowered Temps by around 10 degrees. Took about an hour with ramps in my driveway.
Reviewed in the United States on May 4, 2023 by John
    • Great product
looks like a good quality product, but not yet installed
Reviewed in the United States on July 11, 2020 by Abdulaziz
    • Forester xt
Keep my forester XT around 180-190
Reviewed in the United States on October 27, 2020 by Michael L.

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