Installation Time
(approx) 30 Minutes
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
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$89.95 each
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Features, Description, Reviews, Q&A, Specs & Installation
Low-Temperature Engine Thermostat. The Mishimoto Low-Temperature Racing Thermostat activates earlier than a factory thermostat, allowing coolant to circulate sooner. This helps maintain lower engine operating temperatures, enhancing performance and reliability under demanding conditions such as extreme towing or hot climates.
Construction and Appearance. This thermostat assembly features a stock-style housing with a pre-installed low-temperature thermostat and a durable O-ring, ensuring a secure seal. Made from high-quality materials, it provides a reliable, direct-fit replacement designed to withstand harsh conditions.
Installation. Installation is straightforward and rated as easy with no drilling required. The direct-fit design ensures a seamless replacement with the factory thermostat housing.
Warranty. The thermostat comes with a lifetime limited warranty, offering long-term durability and peace of mind.
Application. Fits 2003–2024 Toyota 4Runner 4.0L V6 (1GR-FE) and 2005–2015 Toyota Tacoma 4.0L V6 (1GR-FE) models without exclusions or modifications required.
Mishimoto MMTS-4RUN40-03
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation Info
Installation Time
(approx) 30 Minutes
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
What's in the Box