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Heating and Cooling› Oil and Fluid Coolers
Mishimoto
Mishimoto 06+ Honda Civic Si Racing Thermostat 68 Degrees
SKU: M00C MMTS-CIV-06
Moderate — 2–4 hours
Overview
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Part #: MMTS-CIV-06
The Mishimoto racing thermostat for the 2006-2011 Honda Civic Si will promote greater cooling efficiency throughout your engine.The Mishimoto racing thermostat will significantly lower high engine temperature produced by modified and upgraded turbo applications.Once the engine is fully warmed up the Mishimoto racing thermostat will open up at a lower temperature (68 C) than standard thermostats (82 C), also allowing the coolant to flow through the engine sooner thus reducing and maintaining cooler engine temperatures.
Features:
- Fits the 2006-2013 Honda Civic SI
- Activates at lower temperature so coolant flows through system earlier
- Allows for cooler engine temperatures
- Mishimoto Lifetime Warranty
Engine coolant thermostat designed to regulate coolant flow and maintain optimal operating temperature. Ensures efficient warm-up, prevents overheating, and supports reliable performance with a precise fit.
Vehicle Symptoms
- Engine temperature gauge reading higher than normal
- Overheating in stop-and-go traffic
- Coolant temperature spikes during hard driving
- Thermostat stuck closed causing rapid overheating
- Need for improved cooling during track days
Diagnostic Codes
- P0128 – Coolant Thermostat Temp Below Regulating Temp
- P0217 – Engine Coolant Overtemperature Condition
Relevant Conversations
- 2006 Honda Civic Si overheating problem
- Mishimoto low temp thermostat for Civic Si review
- P0128 code on 8th gen Civic
- How to install low temp thermostat 2007 Civic Si
- Best thermostat to lower engine temps track day
- Mishimoto MMTS-CIV-06 vs OEM thermostat
- Civic Si thermostat stuck closed symptoms
- Coolant temp high after track session Civic Si
- Lower temp thermostat for 2008 Acura TSX
- Thermostat replacement guide 2006-2013 Civic Si
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | Mishimoto |
| Part Number | M00C MMTS-CIV-06 |
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