Description
Take your cooling system to the next level with the Mishimoto Aluminum Expansion Tank in Rallye Red, crafted for the 2017+ Honda Civic Type R. Designed to replace the OEM plastic tank that can discolor and crack under high engine bay heat, this expansion tank introduces a striking, color-matched upgrade that balances performance with visual appeal.
Built from fully TIG-welded aluminum, this tank is engineered to withstand the repeated thermal cycling of high-performance driving. It features internal baffling that ensures consistent coolant levels during aggressive acceleration, braking, or cornering. This design prevents air from being drawn into the cooling system, maintaining stable pressure and temperature regulation.
The integrated sight glass makes checking coolant levels quick and effortless, and the tank is compatible with both the included Mishimoto filler cap and the OEM cap for flexibility. Finished in a bold Rallye Red, this tank complements the performance styling of your FK8 or FL5 Civic Type R and also suits the 2024+ Acura Integra Type S.
Whether you're pushing your car to the limit or just want to ensure long-term reliability, the Mishimoto Expansion Tank is a vital cooling system upgrade — backed by the Mishimoto Lifetime Warranty for complete peace of mind.
Key Features:
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Direct fit for the 2017+ Honda Civic Type R (FK8 and FL5)
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Constructed from 100% TIG-welded aluminum for superior durability
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Rallye Red finish matches factory Type R engine bay accents
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Internal baffle helps maintain coolant near overflow port during hard driving
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Prevents air from entering the cooling system
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Built-in sight glass for quick, accurate fluid level checks
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Includes Mishimoto filler cap and retains OEM cap compatibility
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Eliminates the factory beige plastic expansion tank
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Designed to withstand extreme engine bay temperatures
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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: 2.0L L4 Turbocharged
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Engine Code: K20C1
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Chassis Codes: FK8, FL5
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Acura Integra Type S (DE5) – 2024, 2025
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Engine: 2.0L L4 Turbocharged
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Engine Code: K20C1
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Chassis Code: DE5
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Technical Specifications:
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Material: TIG-welded aluminum
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Finish: Rallye Red powder coat
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Internal Baffle: Yes
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Sight Glass: Yes
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Cap: Mishimoto filler cap included (OEM compatible)
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Recommended Clamp Torque: 22 in-lbs (2.5Nm)
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Maximum Clamp Torque: 27 in-lbs (3Nm)
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Maintenance Note: After several heat cycles, check the sight glass to confirm proper coolant level
Upgrade your Civic Type R or Integra Type S with the Mishimoto Aluminum Expansion Tank in Rallye Red for enhanced durability, consistent performance, and aggressive OEM+ styling.
