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Mishimoto

Mishimoto MMTS-WRA-12E Thermostat with Housing, Compatible with Wrangler JK 2012-2018, 194F

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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Jun 4
Order within 22 hours and 8 minutes
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Features

  • Upgraded aluminum housing for an improved lifespan and leak prevention
  • Included metal bleeder screw for tighter seal and easier maintenance
  • Rigid one piece design for increased durability.
  • Direct fit for the 2012-2018 Jeep Wrangler JK 3.6L
  • Utilizes high-quality wax for reliable, repeatable operation

Description

Keep temperatures under control in your Jeep with the Mishimoto Jeep Wrangler JK 3.6L Thermostat with Housing. A faulty thermostat can lead to engine overheating and potential internal damage. Protect your ride with the Mishimoto thermostat, featuring an upgraded aluminum housing and bleeder screw for enhanced durability. This thermostat opens at the stock temperature (194 Degrees Fahrenheit), ensuring proper coolant flow as intended by the manufacturer. Designed for reliability and durability, all our thermostats are constructed using high-quality wax for consistent operation.

Material: Aluminum, Metal


Brand: Mishimoto


Exterior Finish: Machined


Smart Home Compatibility: Not Smart Home Compatible


Unit Count: 1.0 Count


Manufacturer: Mishimoto


Number of Items: 1


UPC:


Exterior Finish: Machined


Smart Home Compatibility: Not Smart Home Compatible


Valve Type: Thermostat


Size: Vehicle Specific


Item Weight: 8 ounces


Material Type: Aluminum, Metal


Brand Name: Mishimoto


Model Number: MMTS-WRA-12E


Manufacturer: Mishimoto


Manufacturer Warranty Description: Mishimoto Lifetime Warranty


UPC: 840197724583


Manufacturer Part Number: MMTS-WRA-12E


Number of Pieces: 1


Item Type Name: Thermostat with Housing


Unit Count: 1.0 Count


Included Components: (1) Thermostat Housing, (1) Thermostat, (1) Gasket


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jun 4

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Best Thermostat Out There
This is a huge upgrade to the stock thermostat for the Jeep JK. The fit and finish plus the build quality is amazing. The fact that this is completely made out of metal is simply amazing. The installation is fairly simple. As of yet, the cooling is amazing and I have not tripped the dreaded P0128 error. Overall you're getting your money's worth. ... show more
Reviewed in the United States on March 5, 2026 by Michael D.
    • Mishimoto Quality
Usual Mishimoto quality product. Easy install while replacing the radiator and coolant hoses. It is a 192deg vs the factory 203deg thermostat. Very little difference in normal operating temperature observed so far.
Reviewed in the United States on May 9, 2026 by Richard Wold
    • Upgrade to Aluminum
Well worth the money. More expensive than the cheap plastic housing but it’ll last a lot longer and worth paying a little extra for. Mounts perfectly and operates great. Did the full Mishimoto upgrade on my cooling system and the Jeep runs about 5 degrees cooler and hardly ever goes over 210.
Reviewed in the United States on May 15, 2026 by Matt Adler
    • Quality upgrade that Does fit the 2018 Jeep Wrangler JK
Quick and easy install and very easy to bleed the system. Cleared my P1028 engine code. Not a big fan of plastic parts on an engine and this is a big peace of mind upgrade. I'll be looking at there oil cooler next.
Reviewed in the United States on January 30, 2026 by MD
    • High quality part
High quality part! Fit perfect. The only thing is that the vehicle runs a bit hotter than stock. Claimed it was a 190 degree and runs around 207
Reviewed in the United States on November 22, 2025 by Grumpy gray
    • Fit like factory
Worked perfectly. Came a fresh gasket and bolted right up. I did clean up the casting where the hose tightens down just to avoid any sealing headaches.
Reviewed in the United States on December 26, 2025 by JD
    • Excellent replacement for plastic OEM
Works perfect and is an excellent replacement for the poor quality plastic OEM part on my 2017 Wrangler 3.6L.
Reviewed in the United States on April 23, 2026 by Richard
    • Build Quality, and functionality
Works great, after a few cheap ones went bad on me I went for this one and it’s awesome keeps the temps right where I want them.
Reviewed in the United States on December 3, 2025 by Tony H.

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