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AISIN THT-004 Thermostat with Housing

  • Based on 118 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Sunday, Nov 24
Order within 23 hours and 25 minutes
Available payment plans shown during checkout

Features

  • oe manufactured for exact form, fit and function
  • contributes to maintaining cooling system performance
  • critical aspect of the cooling system
  • keeps the coolant within the optimal temperature range
  • Fit type: Vehicle Specific

Brand: AISIN


Model Name: AISIN


Item Dimensions LxWxH: 4.1 x 4.1 x 3.7 inches


Included Components: AISIN THT-004-Engine Coolant Thermostat


Item Weight: 7.04 Ounces


Brand: ‎AISIN


Model Name: ‎AISIN


Item Dimensions LxWxH: ‎4.1 x 4.1 x 3.7 inches


Included Components: ‎AISIN THT-004-Engine Coolant Thermostat


Item Weight: ‎7.04 Ounces


Shape: ‎Rectangular


Control Type: ‎Button Control


Backlight: ‎No


Manufacturer: ‎AISIN


Item Weight: ‎7 ounces


Product Dimensions: ‎4.1 x 4.1 x 3.7 inches


Country of Origin: ‎Japan


Item model number: ‎THT-004


Exterior: ‎Machined


Manufacturer Part Number: ‎THT-004


OEM Part Number: ‎16031-31020


Date First Available: September 21, 2016


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 24

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

Learn more about financing & leasing here.

Top Amazon Reviews


  • Fits 2006 IS350
This part fit great and is made very well. Fixed cooking issues on a 2006 IS350
Reviewed in the United States on August 16, 2023 by Jason C.

  • An OEM part. Fit my 11 GS350
It is an OEM part with "Toyota" rubbed off and replaced with a "TAMA Thermostat" sticker. They and AISIN are pretty much an OEM supplier to the major Japanese brands. Your reliable transmission? Made by AISIN. They probably sell any overstock as their brand. 100% you can trust this aftermarket brand. Toyota does, puts it in their box, charges $30 more. It is important to have original OEM for a plastic housing, some Fords have this similar setup and fail. If I had to do over replacing it, I would have removed the water housing (like the book says). But it is doable with some creativity leaving it on and removing the hoses. Spec is 7ft/lbs-84 in/lbs for the nuts (or bolts, depending how they come out!). Do not overtighten! I used a no spill funnel to fill the system, was due for 100K service. If the review stays the same, the part is working. ... show more
Reviewed in the United States on March 11, 2022 by Lenny

  • Same as OEM
This is the exact company the makes all mechanical parts for these engines/transmissions. The sensors are made by Denso and AISIN makes the rest. peel the sticker back and see for yourself. If anybody had an issue is most likely they have a 2GR and did not bleed the air out the bleeder.
Reviewed in the United States on August 21, 2022 by Daniel Daniel

  • fits my 08 lexus is 350
fit my 08 lexus rx350
Reviewed in the United States on December 16, 2022 by Bob S.

  • OEM, great quality at an affordable price, thank you! A+
OEM, great quality at an affordable price, thank you! A+
Reviewed in the United States on August 8, 2022 by Amazon Customer

  • Fits and works great on 2007 IS350
Authentic OEM replacement for 2007 IS350. Works great, no leaks, and is identical to the original thermostat. Probably didn't need replace it but why not. It's extra insurance since I'm already replacing the water pump anyway.
Reviewed in the United States on July 15, 2021 by fogcity

  • Works just like the OEM one
Replaced it when I was doing the water pump replacement for my 08 is250. No leak, works just like the old OEM one.
Reviewed in the United States on November 16, 2021 by Yi

  • It work the best
This thermostat fit perfect, it made in Japan I think it original oem.
Reviewed in the United States on October 20, 2021 by Chamrong c.

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