Description
Optimize the cooling performance of your 2017+ Honda Civic Type-R with the Mishimoto Racing Thermostat, engineered to provide an earlier coolant flow for enhanced thermal management during street and track driving. Designed specifically for the turbocharged K20C1 engine found in the Civic Type R, this thermostat starts to open at 68°C (154.4°F)—10°C (18°F) earlier than the factory unit—and is fully open at 83°C (181.4°F), a full 7°C (12.6°F) sooner than stock.
By initiating coolant flow earlier, the Mishimoto thermostat helps regulate engine temperature more effectively, preventing overheating and promoting more consistent performance, especially under high-load driving. Whether you're tackling a canyon road or a circuit lap, this thermostat enables the cooling system to react faster and operate at peak efficiency.
It’s a direct-fit upgrade for both FK8 and FL5 chassis and integrates seamlessly with the factory system. Pair it with the Mishimoto aluminum performance radiator and oil cooler for a comprehensive cooling system upgrade. Like all Mishimoto products, this thermostat is backed by the Mishimoto Lifetime Warranty for long-term peace of mind.
Key Features:
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Designed for the 2017+ Honda Civic Type-R
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Begins opening 10°C (18°F) earlier than stock at 68°C (154.4°F)
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Fully opens 7°C (12.6°F) earlier than stock at 83°C (181.4°F)
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Improves cooling system responsiveness and efficiency
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Helps maintain optimal engine temperatures under demanding conditions
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Ideal for performance builds and track use
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Direct-fit installation for FK8 and FL5 chassis
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Backed by the Mishimoto Lifetime Warranty
Fitment:
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Honda Civic Type-R (FK8 / FL5) – 2017, 2018, 2019, 2020, 2021, 2023, 2024, 2025
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Engine Code: K20C1
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Chassis Codes: FK8, FL5
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Technical Specifications:
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Mishimoto Activation Temperature: 154.4°F (68°C)
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OEM Activation Temperature: 172.4°F (78°C)
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Fully Open Temperature: 181.4°F (83°C)
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Application: Direct-fit for Honda Civic Type-R K20C1
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Note: This thermostat is not a fix for clogged, leaking, or damaged cooling systems. Mishimoto recommends maintaining your cooling system per factory service intervals and using a properly sized radiator.
Upgrade your Civic Type-R's cooling performance with the Mishimoto Racing Thermostat and ensure faster heat management, improved reliability, and enhanced efficiency under aggressive driving conditions.
The standard shipping rate applies to orders within the continental United States. If you intend to place an order outside of the continental US, please reach out to support@x-ph.com for assistance.
