---
product_id: 311847481
title: "Mishimoto MMTS-4RUN40-03 Racing Thermostat Compatible With Toyota 4Runner 2003+"
brand: "mishimoto"
price: "$191.57"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/311847481-mishimoto-mmts-4run40-03-racing-thermostat-compatible-with-toyota-4runner
store_origin: US
region: United States of America
---

# Prevents engine overheating Direct-fit OEM replacement 71°C low activation temp Mishimoto MMTS-4RUN40-03 Racing Thermostat Compatible With Toyota 4Runner 2003+

**Brand:** mishimoto
**Price:** $191.57
**Availability:** ✅ In Stock

## Summary

> 🌡️ Stay cool, drive hotter: The thermostat your 4Runner deserves!

## Quick Answers

- **What is this?** Mishimoto MMTS-4RUN40-03 Racing Thermostat Compatible With Toyota 4Runner 2003+ by mishimoto
- **How much does it cost?** $191.57 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/311847481-mishimoto-mmts-4run40-03-racing-thermostat-compatible-with-toyota-4runner)

## Best For

- mishimoto enthusiasts

## Why This Product

- Trusted mishimoto brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Seamless OEM Fit:** Designed specifically for 2003+ Toyota 4Runner 4.0L for hassle-free installation.
- • **Built for Performance:** Ideal for warmer climates, towing, and power upgrades—keeps your engine safe under stress.
- • **Upgrade Your Cooling Game:** Reduce overheating risk and extend engine life with a trusted racing-grade thermostat.
- • **Precision Machined Housing:** Stock-style housing ensures a perfect seal and reliable durability.
- • **Cooler Engine, Cooler Drive:** Activates at 71°C vs. stock 82°C for earlier coolant flow and lower temps.

## Overview

The Mishimoto MMTS-4RUN40-03 is a low-temperature racing thermostat engineered for 2003+ Toyota 4Runner 4.0L V6 models. Activating at 71°C (160°F), it enables earlier coolant flow compared to the factory 82°C (180°F) thermostat, effectively reducing engine temperatures. This direct-fit replacement features a precision-machined housing for a perfect OEM seal, making it ideal for enhanced performance, towing, and warmer climates.

## Description

Mishimoto MMTS-4RUN40-03 Racing Thermostat Compatible With Toyota 4Runner 2003+

## Features

- Fit type: Vehicle Specific
- Package Dimensions: 111.8 H x 10.2 L x 15.2 W (centimetres)
- Country of Origin : China
- Package Weight: 9.979 kilograms

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Teraflex |
| Brand | Mishimoto |
| Model | Mishimoto MMTS-4RUN40-03 Toyota 4Runner 4.0L Low-Temp Racing Thermostat, 2003+ |
| Product Dimensions | 12.7 x 7.62 x 10.16 cm; 251 g |
| Item model number | MMTS-4RUN40-03 |
| Exterior | Machined |
| Manufacturer Part Number | MMTS-4RUN40-03 |
| OEM Part Number | 160310P010 |
| Mirror Adjustment | Button Control |
| Special Features | Engine Codes: 4.0L V6, Fits: 2003+ Toyota 4Runner 4.0L V6, Mishimoto Activation Temperature: 160°F, OEM Activation Temperature: 180°F |
| Voltage | 24 Volts |
| Item Weight | 251 g |

## Product Details

- **Brand:** Mishimoto
- **Model name:** Mishimoto MMTS-4RUN40-03 Toyota 4Runner 4.0L Low-Temp Racing Thermostat, 2003+
- **Controller type:** Push Button
- **Special features:** (function(f) {var _np=(window.P._namespace("DetailPageProductOverviewTemplatesJava"));if(_np.guardFatal){_np.guardFatal(f)(_np);}else{f(_np);}}(function(P) {
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}));  Mishimoto Activation Temperature: 160°F, Engine Codes: 4.0L V6, Fits: 2003+ Toyota 4Runner 4.0L V6, OEM Activation Temperature: 180°FMishimoto Activation Temperature: 160°F, Engine Codes: 4.0L V6, Fits: 2003+ Toy…    See more
- **Colour:** Mmts-4run40-03

## Images

![Mishimoto MMTS-4RUN40-03 Racing Thermostat Compatible With Toyota 4Runner 2003+ - Image 1](https://m.media-amazon.com/images/I/71zmwXmhp1L.jpg)

## Questions & Answers

**Q: Does this fit Fj cruiser 2008?**
A: This thermostat will not fit your 2008 FJ Cruiser. If you have any other questions please send an email to support@mishimoto.com and we would be happy to assist further. 

Thanks, 

Mishimoto

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-16*