Search  for anything...
AISIN

AISIN GENUINE THT-004 Engine Coolant Thermostat with Housing and Gasket - Compatible with Select Lexus GS300, GS350, GS450h, IS250, IS300, IS350, RC300, RC350

  • Based on 154 reviews
Condition: New
Checking for the best price...
$31.40 Why this price?

Buy Now, Pay Later

As low as $7 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

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.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Sep 15
Order within 23 hours and 18 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Features

  • AISIN OE matched engine coolant thermostats are designed for efficient, consistent performance
  • With superior OE technology and know-how, AISIN ensures that every thermostat provides perfect OE form, fit, and function
  • Manufactured using only the highest quality materials for long life and dependable cooling system performance
  • All AISIN thermostats feature the correct OE specified operating temperature
  • Thermostat housing and gasket included
  • Compatible with select vehicles (engine may affect fitment - verify specific fitment details with fit checker above): LEXUS: 2006 GS300, 2007-15 GS350, 2007-11,2013-18 GS450h, 2006-15 IS250, 2016-18 IS300, 2006-17 IS350, 2016-17 RC300, 2015-17 RC350

Description

AISIN OE matched engine coolant thermostats are designed for efficient, consistent performance and manufactured using only the highest quality materials. With superior OE technology and know-how, AISIN ensures that every thermostat provides perfect OE form, fit, and function and features the correct OE specified operating temperature. AISIN is a leader in the development and production of high-quality original equipment matched components and systems for the automotive industry. Founded in 1965 to produce original equipment automotive parts, AISIN has grown into a $25+ billion global enterprise with approximately 70,000 employees worldwide. Superior products through engineering excellence, progressive technological development, and dedication to service are some factors which have contributed to bringing AISIN to its position as a multiple-award-winning global leader in automotive parts. Set Contains: Thermostat

Manufacturer: ‎AISIN


Brand: ‎AISIN


Model: ‎AISIN


Item Weight: ‎7 ounces


Product Dimensions: ‎4.1 x 4.1 x 3.7 inches


Item model number: ‎THT-004


Exterior: ‎Machined


Manufacturer Part Number: ‎THT-004


OEM Part Number: ‎16031-31020


Mirror Adjustment: ‎Button Control


Position: ‎Center


Date First Available: September 21, 2016


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 15

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
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

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
Review Image by Daniel Daniel
Review Image by Daniel Daniel
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.

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...