# Mishimoto 2003+ Toyota 4Runner 4.0L Low-Temperature Racing Thermostat

A defective thermostat can result in engine overheating and potential internal damage. Improve the reliability of your 2003-2024 Toyota 4Runner 4.0L cooling system with a Mishimoto Low-Temperature Racing Thermostat and housing! This thermostat is designed as a direct-fit replacement for your aged stock unit. The Mishimoto thermostat has a lower activation temperature (71?C/160?F) compared to the factory thermostat (82?C/180?F). The lower activation temperature allows coolant to flow through the engine earlier, which reduces and maintains lower engine temperatures. This thermostat is ideal for use in warmer climates, on vehicles making more power than stock, or under extreme towing/driving conditions. The stock-style housing will provide a proper seal and installs easily. Like all our Toyota Performance parts, this thermostat and housing includes the Mishimoto Lifetime Warranty.

-   The lower activation temperature allows coolant to flow through the engine earlier, which reduces and maintains lower engine temperatures. (71C/160F compared to the factory thermostat at 82C/180F)
-   Ideal for use in hot climates, on modified vehicles, or in extreme towing/driving conditions
-   Stock-style housing includes pre-installed low-temperature thermostat for easy install

This Part Fits:

Year

Make

Model

Submodel

2023

Toyota

4Runner

40th Anniversary Edition

2003-2024

Toyota

4Runner

Limited

2020-2021

Toyota

4Runner

Nightshade

2003-2009

Toyota

4Runner

Sport

2003-2024

Toyota

4Runner

SR5

2018-2024

Toyota

4Runner

SR5 Premium

2010-2016,2021-2022

Toyota

4Runner

Trail

2017-2024

Toyota

4Runner

TRD Off-Road

2018-2024

Toyota

4Runner

TRD Off-Road Premium

2015-2024

Toyota

4Runner

TRD Pro

2022-2024

Toyota

4Runner

TRD Sport

2020-2021

Toyota

4Runner

Venture

2007-2014

Toyota

FJ Cruiser

Base

2008

Toyota

FJ Cruiser

Trail Teams Special Edition

2007

Toyota

FJ Cruiser

TRD Special Edition

2005-2015

Toyota

Tacoma

Base

2005-2015

Toyota

Tacoma

Pre Runner

2015

Toyota

Tacoma

TRD Pro

2005-2013

Toyota

Tacoma

X-Runner

2005-2013

Toyota

Tundra

Base

2014

Toyota

Tundra

SR

2005-2011

Toyota

Tundra

SR5

## Details

- **Price:** 146.85 CAD
- **Vendor:** Mishimoto
- **Type:** Thermostats

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 146.85 CAD | In stock |

## Images

- Photo - Primary
- User 1
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/mishimoto-2003-toyota-4runner-4-0l-low-temperature-racing-thermostat)
> Updated: 2026-06-27