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AISIN

AISIN THT-015 Engine Coolant Thermostat - Compatible with Select Lexus GS400, GS430, GX470, LS400, LS430, LX450, LX470, SC400, SC430 Toyota 4Runner, Land Cruiser, Sequoia, Tundra

  • Based on 156 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Mar 27
Order within 5 hours and 33 minutes
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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
  • Gasket not included
  • Compatible with select vehicles (engine may affect fitment - verify specific fitment details with fit checker above): LEXUS: 1998-00 GS400, 2001-07 GS430, 2003-09 GX470, 1998-00 LS400, 2001-06 LS430, 1996-97 LX450, 1998-07 LX470
  • Compatible with (continued): LEXUS: 1998-00 SC400, 2002-10 SC430; TOYOTA: 2003-09 4Runner, 1993-07 Land Cruiser, 2001-09 Sequoia, 2000-09 Tundra

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: ‎6 ounces


Product Dimensions: ‎3 x 3 x 2.8 inches


Item model number: ‎THT-015


Exterior: ‎Machined


Manufacturer Part Number: ‎THT-015


OEM Part Number: ‎90916-03100


Position: ‎Center


Date First Available: September 22, 2016


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Mar 27

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.

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Similar Products

Top Amazon Reviews

    • OEM level replacement / need to purchase o-ring
2004 Toyota 4runner / V8 My thermostat went bad. Purchased Aisin and another no name brand. The Aisin has a much higher build quality than the no name brand. The only drawback is you will need to purchase an O-ring seperatly. This adds between $5-$10. Fit perfect and seems to be working fine.
Reviewed in the United States on December 22, 2023 by Jason W
    • Worth it to get Aisin *doesn't include gasket
My Water Pump started leaking on my 2005 Tundra 4.7 It was intermittent for a while, so I just kept the coolant topped up. It started getting worse, so I started ordering all the parts. Water pump, timing belt, ect. I hooked up my OBD scanner to see the actual temperature of the coolant, and it was hovering from 205 to 210, which is hotter than ideal for sure. After a long and exciting repair job, everything is back together, and 2 weeks later, the coolant temp stays at 186-187 consistently. I replaced the water pump, radiator, timing belt, tensioner and drive belt, also, but it's good to know the new Thermostat is working perfectly. I would venture to guess the old one was not Aisin/Toyota. I myself was tempted to get a cheaper one, as the parts list got bigger. But the old thermostat was definitely worn out. The rubber parts were all misshapen and definitely not sealing, or allowing flow like they should. Same with the radiator cap, the rubber was stretched out. So, while I replaced most of the entire cooling system, and the new thermostats effect difficult to say, it good to know it's working perfectly. The temperature would swing +/- 10 degrees when driving around before, now it maybe moves +/- 2. Side note, as many have said before, the dash temperature guage is not very helpful with these things. During the whole fiasco, it never read anything but right in the middle. If you hit 230 or 240 degrees, I'm sure it would let you know, but at that point things are getting bad. I use a $20 Bluetooth obd scanner I got here on Amazon, and it's been a great investment. Has helped me solve several issues. ... show more
Reviewed in the United States on November 11, 2023 by Brad
    • Factory fit and finish for Lexus
High quality stock replacement for my Lexus gx470
Reviewed in the United States on March 11, 2024 by CMB
    • Fits just right but no gasket
Works great, wish it came with gasket too.
Reviewed in the United States on March 2, 2024 by Bee K.
    • Great product
Appears the same as an OEM vehicle thermostat but at half the cost.
Reviewed in the United States on March 21, 2024 by Alice C.
    • GX470
Perfect drop in for my GX470. Make sure to buy the oring also.
Reviewed in the United States on January 7, 2024 by J.Moua
    • Very good BUT!
Good thermostat but don't forget to order a gasket/O ring. They do not include one in the box, why I don't no but I was stuck until a friend came home from work to take me to the parts store.
Reviewed in the United States on August 12, 2021 by Joe
    • One of the best
It's hard to best any Aisin part ..period
Reviewed in the United States on April 2, 2023 by Bean

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