Mishimoto Racing Thermostat 05-10 Scion tC 155 Deg F / 68 Deg C | Lower Opening Temp | Performance Cooling Thermostat

Overview

The Mishimoto Racing Thermostat for the 2005-2010 Scion tC is designed to enhance your engine’s cooling efficiency by opening at a lower temperature than the factory thermostat. Specifically engineered for vehicles with modified or upgraded turbo setups, this thermostat helps reduce excessive engine heat that can compromise performance and reliability. By allowing coolant to circulate sooner, it maintains more consistent and cooler engine temperatures under demanding conditions.

Mishimoto’s approach to cooling components focuses on precision engineering and durability. This racing thermostat is crafted to meet the needs of enthusiasts who push their engines harder than stock conditions allow. By lowering the thermostat opening temperature from the standard 82°C (180°F) to 68°C (155°F), Mishimoto ensures quicker coolant flow without sacrificing engine warm-up time, supporting optimal thermal management for performance applications.

For Subaru owners who appreciate the importance of temperature control—especially those running turbocharged setups—this thermostat offers tangible benefits. Cooler engine temperatures can improve power consistency, reduce the risk of heat soak, and extend the lifespan of critical engine components. While designed for the Scion tC, the principles of enhanced cooling apply broadly to performance-minded drivers seeking reliable thermal regulation.

Features & Specifications

This Mishimoto Racing Thermostat is engineered for the 2005-2010 Scion tC and features a 68°C (155°F) opening temperature. Constructed from high-quality materials, it delivers improved cooling efficiency for enthusiasts seeking better thermal management in turbocharged or modified engines.

• Brand: Mishimoto
• Product: Racing Thermostat 05-10 Scion tC 155 Deg F / 68 Deg C
• Part Number: MMTS-TC-05L
• Fitment: 2005-2010 Scion tC
• Material: High-grade metal alloy
• Finish: Natural metal finish
• Construction: Precision engineered, calibrated spring mechanism
• Origin: Made in USA
• Opening Temperature: 68°C / 155°F
• Standard Thermostat Temp: 82°C / 180°F

Key Benefits

• Performance Cooling: Opens at a lower temperature to reduce engine heat and prevent overheating during high-load conditions.
• Engine Longevity: Maintains cooler operating temperatures, helping to protect engine components from heat-related wear.
• Improved Turbo Efficiency: Supports modified turbo setups by reducing heat soak and improving thermal stability.
• Direct Replacement: Designed to fit the 2005-2010 Scion tC without modification, ensuring hassle-free installation.
• Quality Construction: Built with durable materials and precise calibration for consistent performance over time.

What's Included

• 1× Mishimoto Racing Thermostat 05-10 Scion tC 155 Deg F / 68 Deg C
• Installation instructions

Installation & Compatibility

Installation of the Mishimoto Racing Thermostat is straightforward and typically DIY-friendly for those with basic mechanical skills. It replaces the factory thermostat directly, requiring standard hand tools. No special modifications are necessary, but it is recommended to drain and properly dispose of coolant during installation. This thermostat is specifically calibrated for the 2005-2010 Scion tC; verify fitment before purchase to ensure compatibility. No tuning adjustments are required, but monitoring coolant temperatures after installation is advised to confirm proper operation.

• Professional Installation: Recommended for those unfamiliar with cooling system service
• Modifications Required: None
• Verify Compatibility: Confirm fitment for your specific year and model

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