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+ 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.

Fitment, Fits, Fitments
2003Toyota4RunnerLimited
2003Toyota4RunnerSport
2003Toyota4RunnerSR5
2004Toyota4RunnerLimited
2004Toyota4RunnerSport
2004Toyota4RunnerSR5
2005Toyota4RunnerLimited
2005Toyota4RunnerSport
2005Toyota4RunnerSR5
2005ToyotaTacomaBase
2005ToyotaTacomaPre Runner
2005ToyotaTacomaX-Runner
2006Toyota4RunnerLimited
2006Toyota4RunnerSport
2006Toyota4RunnerSR5
2006ToyotaTacomaBase
2006ToyotaTacomaPre Runner
2006ToyotaTacomaX-Runner
2007Toyota4RunnerLimited
2007Toyota4RunnerSport
2007Toyota4RunnerSR5
2007ToyotaFJ CruiserBase
2007ToyotaFJ CruiserTRD Special Edition
2007ToyotaTacomaBase
2007ToyotaTacomaPre Runner
2007ToyotaTacomaX-Runner
2008Toyota4RunnerLimited
2008Toyota4RunnerSport
2008Toyota4RunnerSR5
2008ToyotaFJ CruiserBase
2008ToyotaFJ CruiserTrail Teams Special Edition
2008ToyotaTacomaBase
2008ToyotaTacomaPre Runner
2008ToyotaTacomaX-Runner
2009Toyota4RunnerLimited
2009Toyota4RunnerSport
2009Toyota4RunnerSR5
2009ToyotaFJ CruiserBase
2010Toyota4RunnerLimited
2010Toyota4RunnerSR5
2010Toyota4RunnerTrail
2010ToyotaFJ CruiserBase
2011Toyota4RunnerLimited
2011Toyota4RunnerSR5
2011Toyota4RunnerTrail
2011ToyotaFJ CruiserBase
2012Toyota4RunnerLimited
2012Toyota4RunnerSR5
2012Toyota4RunnerTrail
2012ToyotaFJ CruiserBase
2013Toyota4RunnerLimited
2013Toyota4RunnerSR5
2013Toyota4RunnerTrail
2013ToyotaFJ CruiserBase
2014Toyota4RunnerLimited
2014Toyota4RunnerSR5
2014Toyota4RunnerTrail
2014ToyotaFJ CruiserBase
2015Toyota4RunnerLimited
2015Toyota4RunnerSR5
2015Toyota4RunnerTrail
2015Toyota4RunnerTRD Pro
2016Toyota4RunnerLimited
2016Toyota4RunnerSR5
2016Toyota4RunnerTrail
2016Toyota4RunnerTRD Pro
2017Toyota4RunnerLimited
2017Toyota4RunnerSR5
2017Toyota4RunnerTRD Off-Road
2017Toyota4RunnerTRD Pro
2018Toyota4RunnerLimited
2018Toyota4RunnerSR5
2018Toyota4RunnerSR5 Premium
2018Toyota4RunnerTRD Off-Road
2018Toyota4RunnerTRD Pro
2019Toyota4RunnerLimited
2019Toyota4RunnerSR5
2019Toyota4RunnerSR5 Premium
2019Toyota4RunnerTRD Off-Road
2019Toyota4RunnerTRD Pro
2020Toyota4RunnerLimited
2020Toyota4RunnerSR5
2020Toyota4RunnerSR5 Premium
2020Toyota4RunnerTRD Off-Road
2020Toyota4RunnerTRD Pro
2021Toyota4RunnerLimited
2021Toyota4RunnerSR5
2021Toyota4RunnerSR5 Premium
2021Toyota4RunnerTrail
2021Toyota4RunnerTRD Off-Road
2021Toyota4RunnerTRD Pro