Mishimoto is a leading manufacturer of high-performance cooling solutions, specializing in radiators, intercoolers, oil coolers, and silicone hose kits designed for maximum efficiency and durability. Headquartered in the USA, with manufacturing facilities worldwide, Mishimoto combines cutting-edge engineering with rigorous testing to deliver top-tier cooling products for street, off-road, and track applications. Built to withstand extreme conditions, Mishimoto's products help maintain optimal engine temperatures, ensuring peak performance and longevity. Trusted by automotive enthusiasts, racers, and professional teams, Mishimoto continues to set the standard for innovation, reliability, and performance-driven cooling solutions.
A defective thermostat can result in engine overheating and potential internal damage. Improve the reliability of your 2003+ 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.
This Part Fits:
Fitment Years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021.
A defective thermostat can result in engine overheating and potential internal damage. Improve the reliability of your 2003+ 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.
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2003-2021 | Toyota | 4Runner | Limited |
| 2020-2021 | Toyota | 4Runner | Nightshade |
| 2003-2009 | Toyota | 4Runner | Sport |
| 2003-2021 | Toyota | 4Runner | SR5 |
| 2018-2021 | Toyota | 4Runner | SR5 Premium |
| 2010-2016,2021 | Toyota | 4Runner | Trail |
| 2017-2021 | Toyota | 4Runner | TRD Off-Road |
| 2018-2021 | Toyota | 4Runner | TRD Off-Road Premium |
| 2015-2021 | Toyota | 4Runner | TRD Pro |
| 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 |
| 2005-2008 | Toyota | Tacoma | Base |
| 2005-2008 | Toyota | Tacoma | Pre Runner |
| 2005-2008 | Toyota | Tacoma | X-Runner |
Fitment Years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021.
- Category:
- Cooling>Thermostats
- Core:
- N
- Core Price:
- 0
- LTL:
- N
- MPN:
- MMTS-4RUN40-03
- Proposition 65:
- N
