---
product_id: 79603338
title: "AISIN GENUINE THT-004 Engine Coolant Thermostat with Housing and Gasket - Compatible with Select Lexus GS300, GS350, GS450h, IS250, IS300, IS350, RC300, RC350"
price: "42806CFA"
currency: XOF
in_stock: true
reviews_count: 11
url: https://www.desertcart.sn/products/79603338-aisin-genuine-tht-004-engine-coolant-thermostat-with-housing-gasket
store_origin: SN
region: Senegal
---

# Precision OE form & fit OE specified operating temp Includes housing & gasket AISIN GENUINE THT-004 Engine Coolant Thermostat with Housing and Gasket - Compatible with Select Lexus GS300, GS350, GS450h, IS250, IS300, IS350, RC300, RC350

**Price:** 42806CFA
**Availability:** ✅ In Stock

## Summary

> 🌟 Keep your Lexus running cool with AISIN’s precision thermostat — because your engine deserves the best!

## Quick Answers

- **What is this?** AISIN GENUINE THT-004 Engine Coolant Thermostat with Housing and Gasket - Compatible with Select Lexus GS300, GS350, GS450h, IS250, IS300, IS350, RC300, RC350
- **How much does it cost?** 42806CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/79603338-aisin-genuine-tht-004-engine-coolant-thermostat-with-housing-gasket)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durability That Lasts:** Crafted from premium materials to withstand wear and deliver long-term cooling system stability.
- • **Perfect Fit, Zero Hassle:** Designed with exact OE specifications to ensure seamless installation and flawless operation.
- • **Complete Installation Kit:** Includes thermostat housing and gasket for a one-stop, professional-grade replacement.
- • **Trusted by Lexus Enthusiasts:** Highly rated by users for restoring accurate engine temperature and preventing overheating.
- • **Engineered for Peak Performance:** AISIN’s OE-matched thermostat guarantees consistent, reliable temperature regulation for your Lexus.

## Overview

The AISIN GENUINE THT-004 Engine Coolant Thermostat is an OE-matched replacement part designed specifically for select Lexus models including GS300, GS350, GS450h, IS250, IS300, IS350, RC300, and RC350. Manufactured with premium materials, it ensures precise temperature control at the correct OE specified operating temperature. The package includes the thermostat, housing, and gasket for a complete, hassle-free installation. Trusted globally for engineering excellence, AISIN delivers a durable, perfect-fit solution that restores optimal engine cooling performance and reliability.

## 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: OEM perfect fit, no issues - Works well for 2010 Lexus is350. Now my thermostat functions properly and my temperature gauge needle is in the right spot around the middle. My old one was stuck at being at C on the gauge, because the thermostat was stuck open from old age.
Review: Perfect exact same design and fit - Works perfectly, unlike the aftermarket ones sold in stores with my car. Very specific and controlled temperature control

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01M1I6B07 |
| Best Sellers Rank | #196,617 in Automotive ( See Top 100 in Automotive ) #324 in Automotive Replacement Engine Thermostats |
| Brand | AISIN |
| Customer Reviews | 4.5 4.5 out of 5 stars (150) |
| Date First Available | September 21, 2016 |
| Exterior | Machined |
| Item Weight | 7 ounces |
| Item model number | THT-004 |
| Manufacturer | AISIN |
| Manufacturer Part Number | THT-004 |
| Mirror Adjustment | Button Control |
| Model | AISIN |
| OEM Part Number | 16031-31020 |
| Position | Center |
| Product Dimensions | 4.1 x 4.1 x 3.7 inches |

## Images

![AISIN GENUINE THT-004 Engine Coolant Thermostat with Housing and Gasket - Compatible with Select Lexus GS300, GS350, GS450h, IS250, IS300, IS350, RC300, RC350 - Image 1](https://m.media-amazon.com/images/I/81hVL5Sfa1L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ OEM perfect fit, no issues
*by J***Z on January 30, 2026*

Works well for 2010 Lexus is350. Now my thermostat functions properly and my temperature gauge needle is in the right spot around the middle. My old one was stuck at being at C on the gauge, because the thermostat was stuck open from old age.

### ⭐⭐⭐⭐⭐ Perfect exact same design and fit
*by T***D on September 6, 2025*

Works perfectly, unlike the aftermarket ones sold in stores with my car. Very specific and controlled temperature control

### ⭐⭐⭐⭐⭐ OEM, fits and works perfect
*by M***. on June 25, 2024*

Exactly what you would expect from an OEM product, perfect fit, and function.

## Frequently Bought Together

- AISIN THT-004 Engine Coolant Thermostat with Housing and Gasket - Compatible with Select Lexus GS300, GS350, GS450h, IS250, IS300, IS350, RC300, RC350
- AISIN WPT-137 New Engine Water Pump with Gaskets - Compatible with Select Lexus GS300, GS350, GS450h, IS250, IS300, IS350, RC300, RC350
- Bando USA 7PK1550 Serpentine Belt

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-07-13*