Racing Thermostat, Low-Temp, fits Toyota 4Runner 4.0L 2003-2024 - Mishimoto - MMTS-4RUN40-03

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.
Stock-style housing includes pre-installed low-temperature thermostat for easy install
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
Install Difficulty: 2
Prop 65 - Short Label: WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
Prop 65 Y/N: Y
SellingPoint01: Direct fit for 2003-2024 Toyota 4Runner 4.0L
SellingPoint02: Stock-style housing includes pre-installed low-temperature thermostat for easy install
SellingPoint03: 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)
SellingPoint04: Ideal for use in hot climates on modified vehicles or in extreme towing/driving conditions
SellingPoint05: Mishimoto Lifetime Warranty
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TechSpec Applications: 2003-2024 Toyota 4Runner 4.0L V6 (1GR-FE)--2007-2023 Toyota FJ Cruiser 4.0L V6 (1GR-FE)--2005-2015 Toyota Tacoma 4.0L V6 (1GR-FE)--2005-2014 Toyota Tundra 4.0L V6 (1GR-FE)--2010 - 2023 Toyota Prado 4.0L V6 (1GR-FE)--2009 - 2023 Toyota LC70 Series 4.0L V6 (1GR-FE) (GAS)--2022 - 2023 Toyota Hilux 4.0L V6 (1GR-FE)
TechSpec Chassis Codes: N/A
TechSpec Engine Codes: 4.0L V6
TechSpec Includes: (1) Mishimoto Low-Temp Thermostat--(1) Thermostat Housing w/ O-Ring--Mishimoto Lifetime Warranty
TechSpec Mishimoto Activation Temperature (F): 160
TechSpec Note: N/A
TechSpec OEM Activation Temperature (F): 180