Mishimoto
Mishimoto Racing Thermostat 06-09 Honda Civic SI
Mishimoto Racing Thermostat 06-09 Honda Civic SI
Part number: 0535X
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- Free fitment check before you order
Listed for: Honda Civic SIFitment notes & questions
Racing Thermostat from Mishimoto, listed for 2006–2009 Honda Civic SI. Leaks, overheating and a heater that blows cold are common signs of cooling trouble.
Quick facts
- Brand: Mishimoto
- Part type: Cooling part
- Listed for: 2006–2009 Honda Civic SI
Listed fitment
- 2007 - 2008 Acura RDX Base
- 2004 - 2008 Acura TSX Base
- 2011 - 2013 Honda Civic Base
- 2008 - 2011 Honda Civic DX-G
- 2008 - 2013 Honda Civic EX-L
- 2006 - 2007 Honda Civic EXS, LXS
- 2006 - 2012 Honda Civic GX
- 2012 - 2013 Honda Civic HF
- 2009 - 2013 Honda Civic Hybrid-L
- 2006 - 2013 Honda Civic LX, EX, Si, DX, Hybrid
- 2009 - 2011 Honda Civic LX-S
- 2008 Honda Civic MUGEN Si
- 2012 Honda Civic Si HFP
- 2009 - 2010 Honda Civic Sport
- 2013 Honda Civic Touring, Natural Gas
- 2007 - 2013 Honda CR-V EX, LX, EX-L
- 2009 Honda CR-V EXL
- 2011 Honda CR-V SE
- 2012 - 2013 Honda CR-V Touring
Tip: Flush and refill with the coolant type your engine needs, then bleed the air out.

Mishimoto cooling part for the Honda Civic SI: what to know
Leaks, overheating and a heater that blows cold are common signs of cooling trouble.
Fitment notes
- Listed for: Honda Civic SI.
- Model years: 06-09. Check your car's year falls inside this range.
- Specs, lead time and warranty come from Mishimoto and can change. The details above this guide are the latest we have.
Not sure it fits? Send us your year, make, model, engine and trim and we'll check before you order.
Ask about fitmentWhat else to plan for
- Coolant. Use the correct type.
- Thermostat. Cheap while the system is drained.
More for your car: Thermostats · Honda Parts · All Radiators · Cooling & heating
Questions about Honda Civic SI cooling part
Will this fit my Honda Civic SI?
What coolant should I use?
Where do specs and warranty details come from?
Questions & answers
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