---
product_id: 50274225
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: "306 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Aisin"
url: https://www.desertcart.dk/products/50274225-tht-015-engine-coolant-thermostat-compatible-with-select-lexus-gs400
store_origin: DK
region: Denmark
---

# OE specified operating temp Consistent, efficient performance Precision OE form, fit & function 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:** 306 kr
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your engine cool, your ride smooth, and your status premium.

## 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?** 306 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/50274225-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

- • **Perfect OE Match:** Engineered to deliver exact original equipment fit and flawless function for your Lexus or Toyota.
- • **Premium Durability:** Crafted from top-tier materials ensuring long-lasting, dependable cooling system operation.
- • **Trusted Brand Legacy:** From AISIN, a global automotive parts leader with decades of engineering excellence and award-winning quality.
- • **Wide Vehicle Compatibility:** Fits select Lexus GS, GX, LS, LX, SC models and Toyota 4Runner, Land Cruiser, Sequoia, Tundra for versatile use.
- • **Reliable Temperature Control:** Maintains the precise OE specified operating temperature to optimize engine cooling and performance.

## Overview

The AISIN THT-015 Engine Coolant Thermostat is a high-quality, OE-matched replacement part designed for select Lexus and Toyota models. Manufactured with precision and premium materials, it ensures consistent, efficient engine temperature regulation, enhancing cooling system reliability and vehicle performance. Trusted globally, AISIN delivers engineering excellence and durability in every thermostat.

## 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: Aisin Quality - From the original part manufacturer Aisin. You really can't go wrong with quick shipping from desertcart either. Grade buy!
Review: fits 1999 land cruiser 4.7 - fits 1999 LC and works great

## 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 |
|---------------|-------|
| ASIN | B01LZVUYEZ |
| Best Sellers Rank | #32,415 in Automotive ( See Top 100 in Automotive ) #33 in Automotive Replacement Engine Thermostats |
| Brand | AISIN |
| Customer Reviews | 4.6 4.6 out of 5 stars (265) |
| Date First Available | September 22, 2016 |
| Exterior | Machined |
| Item Weight | 6 ounces |
| Item model number | THT-015 |
| Manufacturer | AISIN |
| Manufacturer Part Number | THT-015 |
| Model | AISIN |
| OEM Part Number | 90916-03100 |
| Position | Center |
| Product Dimensions | 3 x 3 x 2.8 inches |

## 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

### ⭐⭐⭐⭐⭐ Aisin Quality
*by T***T on December 3, 2025*

From the original part manufacturer Aisin. You really can't go wrong with quick shipping from Amazon either. Grade buy!

### ⭐⭐⭐⭐⭐ fits 1999 land cruiser 4.7
*by S***E on May 28, 2025*

fits 1999 LC and works great

### ⭐⭐⭐⭐⭐ Worth it to get Aisin *doesn't include gasket
*by B***D on November 11, 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.dk/products/50274225-tht-015-engine-coolant-thermostat-compatible-with-select-lexus-gs400](https://www.desertcart.dk/products/50274225-tht-015-engine-coolant-thermostat-compatible-with-select-lexus-gs400)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-07*