--- product_id: 264522270 title: "THT-015 Engine Coolant Thermostat - Compatible with Select Lexus GS400, GS430, GX470, LS400, LS430, LX450, LX470, SC400, SC430 Toyota 4Runner, Land Cruiser, Sequoia, Tundra" brand: "aisin" price: "₩81662" currency: KRW in_stock: true reviews_count: 5 category: "Aisin" url: https://www.desertcart.kr/products/264522270-tht-015-engine-coolant-thermostat-compatible-with-select-lexus-gs400 store_origin: KR region: South Korea --- # High-quality durable materials Precision OE form, fit & function OE specified operating temp THT-015 Engine Coolant Thermostat - Compatible with Select Lexus GS400, GS430, GX470, LS400, LS430, LX450, LX470, SC400, SC430 Toyota 4Runner, Land Cruiser, Sequoia, Tundra **Brand:** aisin **Price:** ₩81662 **Availability:** ✅ In Stock ## Summary > 🌟 Keep your engine cool, your ride smooth, and your status elevated. ## Quick Answers - **What is this?** THT-015 Engine Coolant Thermostat - Compatible with Select Lexus GS400, GS430, GX470, LS400, LS430, LX450, LX470, SC400, SC430 Toyota 4Runner, Land Cruiser, Sequoia, Tundra by aisin - **How much does it cost?** ₩81662 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/264522270-tht-015-engine-coolant-thermostat-compatible-with-select-lexus-gs400) ## Best For - aisin enthusiasts ## Why This Product - Trusted aisin brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Fit, Zero Guesswork:** Designed with exact OE specifications to ensure flawless installation and seamless integration. - • **Engineered for Peak Performance:** AISIN’s OE-matched thermostat guarantees your engine hits the perfect operating temperature every time. - • **Trusted by Luxury & Powerhouses:** Compatible with select Lexus and Toyota models, elevating your vehicle’s reliability and efficiency. - • **Built to Last, Drive with Confidence:** Crafted from premium materials for long-lasting durability and dependable cooling system performance. - • **Global Leader in Automotive Excellence:** Backed by AISIN’s decades of innovation and award-winning engineering pedigree. ## Overview The AISIN THT-015 Engine Coolant Thermostat is a precision-engineered, OE-matched component designed for select Lexus and Toyota models. Manufactured with premium materials, it ensures accurate operating temperature control, reliable fitment, and long-lasting cooling system performance, backed by AISIN’s global reputation for automotive excellence. ## Description Product 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 Review: Worked perfectly for my 2007 Toyota Tundra, 4.7L. Review: Aisin seems to always make quality car parts. This thermostat fit perfectly and will probably last the life of the cruiser. Price was good can't complain ## 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 ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | AISIN | | Brand | AISIN | | Model | AISIN | | Product Dimensions | 7.62 x 7.62 x 7.11 cm; 199.58 g | | Item model number | THT-015 | | Exterior | Machined | | Manufacturer Part Number | THT-015 | | OEM Part Number | 90916-03100 | | Position | Center | | Item Weight | 200 g | ## Images ![THT-015 Engine Coolant Thermostat - Compatible with Select Lexus GS400, GS430, GX470, LS400, LS430, LX450, LX470, SC400, SC430 Toyota 4Runner, Land Cruiser, Sequoia, Tundra - Image 1](https://m.media-amazon.com/images/I/816hpM3IRgL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by D***D on 5 May 2026* Worked perfectly for my 2007 Toyota Tundra, 4.7L. ### ⭐⭐⭐⭐⭐ Review *by G***E on 25 March 2026* Aisin seems to always make quality car parts. This thermostat fit perfectly and will probably last the life of the cruiser. Price was good can't complain ### ⭐⭐⭐⭐⭐ Review *by B***D on 11 November 2023* 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. ## Frequently Bought Together - 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 - AISIN TKT-021 Engine Timing Belt Kit with Water Pump - Compatible with Select Lexus GS400, GS430, GX470, LS400, LS430, LX470, SC400, SC430 Toyota 4Runner, Land Cruiser, Sequoia, Tundra - Toyota Genuine Thermostat Gasket --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kr/products/264522270-tht-015-engine-coolant-thermostat-compatible-with-select-lexus-gs400](https://www.desertcart.kr/products/264522270-tht-015-engine-coolant-thermostat-compatible-with-select-lexus-gs400) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-05-30*