Mishimoto Racing Thermostat 68°C — Fits 01-07 Subaru WRX/WRX STi

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SKU: MISMMTS-WRX-01
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Watch in action

Mishimoto 68°C Racing Thermostat for Subaru WRX & WRX STi (2001-2007)

Enhance the cooling performance of your Subaru WRX or WRX STi (2001-2007) with the Mishimoto 68°C Racing Thermostat. This performance thermostat is engineered to open at a lower temperature than the stock unit, promoting quicker engine warm-up and more efficient heat dissipation, crucial for maintaining optimal engine temperatures during spirited driving or track use.

Key Features and Benefits:

  • Lower Opening Temperature: At 68°C (154°F), this thermostat opens significantly sooner than the stock unit, allowing coolant to circulate through the radiator earlier.
  • Improved Cooling Efficiency: Facilitates better heat management by enabling faster coolant flow, helping to prevent heat soak and maintain consistent engine temperatures.
  • Faster Engine Warm-up: While focused on cooling, the lower opening temp can also contribute to reaching optimal operating temperature more quickly in certain conditions.
  • Direct Replacement: Designed as a direct fit for the specified Subaru models, ensuring easy installation without requiring modifications.
  • Durable Construction: Built to withstand the demanding conditions of performance driving, ensuring reliability and longevity.

Vehicle Fitment:

This Mishimoto Racing Thermostat is compatible with the following Subaru models:

  • Subaru WRX (2001-2007)
  • Subaru WRX STi (2001-2007)

Also fits select Saab 9-2X models (2005-2006) and Subaru Forester models (1998-2008) with compatible engines. Please verify fitment for your specific vehicle. Upgrade your cooling system with Mishimoto's precision-engineered thermostat, available at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2003 Subaru Baja Base
2003-2006 Subaru Baja Sport
2004-2006 Subaru Baja Turbo
1998-2002 Subaru Forester Base
1998-2002 Subaru Forester L
1998-2002 Subaru Forester S
2003-2005 Subaru Forester XS
2003-2013 Subaru Forester X
2004-2005 Subaru Forester XT
2005 Subaru Forester XS L.L. Bean Edition
2005 Subaru Forester XT Premium
2006-2008 Subaru Forester X L.L. Bean Edition
2006-2010 Subaru Forester XT Limited
2008 Subaru Forester Sports 2.5 X
2008 Subaru Forester Sports 2.5 XT
2009 Subaru Forester XT
2009-2013 Subaru Forester X Limited
2009-2013 Subaru Forester X Premium
2010-2013 Subaru Forester XT Premium
2011-2013 Subaru Forester X Touring
2011-2013 Subaru Forester XT Touring
1998-2005 Subaru Impreza RS
2002-2004 Subaru Impreza Outback
2002-2004 Subaru Impreza TS
2004-2014 Subaru Impreza WRX STI
2005-2011 Subaru Impreza Outback Sport
2006-2007 Subaru Impreza WRX Limited
2006-2007 Subaru Impreza WRX TR
2006-2011 Subaru Impreza 2.5i
2006-2014 Subaru Impreza WRX
2007 Subaru Impreza WRX STI Limited
2009-2010 Subaru Impreza 2.5 GT
2009-2014 Subaru Impreza WRX Premium
2010 Subaru Impreza WRX STI Special Edition
2010-2011 Subaru Impreza 2.5i Premium
2010-2014 Subaru Impreza WRX Limited
2011-2014 Subaru Impreza WRX STI Limited
1996 Subaru Legacy LS
1996-1997 Subaru Legacy LSi
1996-1998 Subaru Legacy Postal
1996-1999 Subaru Legacy Outback
1996-2000 Subaru Legacy Brighton
1996-2004 Subaru Legacy L
1996-2004 Subaru Legacy GT
1997 Subaru Legacy Outback Limited
1998 Subaru Legacy GT Limited
1999 Subaru Legacy Outback Limited
1999 Subaru Legacy SUS 30th Anniversary
1999 Subaru Legacy L 30th Anniversary
1999 Subaru Legacy Limited 30th Anniversary
2000-2002 Subaru Legacy GT Limited
2003 Subaru Legacy L SE
2004 Subaru Legacy L 35th Anniversary
2001-2003 Subaru Outback VDC
2001-2004 Subaru Outback L.L. Bean
2001-2004 Subaru Outback Base
2001-2005 Subaru Outback Limited
2002-2004 Subaru Outback H6
2004 Subaru Outback H6 35th Anniversary Edition
2004 Subaru Outback H6 VDC

…and 32 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Watch in action

Mishimoto 68°C Racing Thermostat for Subaru WRX & WRX STi (2001-2007)

Enhance the cooling performance of your Subaru WRX or WRX STi (2001-2007) with the Mishimoto 68°C Racing Thermostat. This performance thermostat is engineered to open at a lower temperature than the stock unit, promoting quicker engine warm-up and more efficient heat dissipation, crucial for maintaining optimal engine temperatures during spirited driving or track use.

Key Features and Benefits:

  • Lower Opening Temperature: At 68°C (154°F), this thermostat opens significantly sooner than the stock unit, allowing coolant to circulate through the radiator earlier.
  • Improved Cooling Efficiency: Facilitates better heat management by enabling faster coolant flow, helping to prevent heat soak and maintain consistent engine temperatures.
  • Faster Engine Warm-up: While focused on cooling, the lower opening temp can also contribute to reaching optimal operating temperature more quickly in certain conditions.
  • Direct Replacement: Designed as a direct fit for the specified Subaru models, ensuring easy installation without requiring modifications.
  • Durable Construction: Built to withstand the demanding conditions of performance driving, ensuring reliability and longevity.

Vehicle Fitment:

This Mishimoto Racing Thermostat is compatible with the following Subaru models:

  • Subaru WRX (2001-2007)
  • Subaru WRX STi (2001-2007)

Also fits select Saab 9-2X models (2005-2006) and Subaru Forester models (1998-2008) with compatible engines. Please verify fitment for your specific vehicle. Upgrade your cooling system with Mishimoto's precision-engineered thermostat, available at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2003 Subaru Baja Base
2003-2006 Subaru Baja Sport
2004-2006 Subaru Baja Turbo
1998-2002 Subaru Forester Base
1998-2002 Subaru Forester L
1998-2002 Subaru Forester S
2003-2005 Subaru Forester XS
2003-2013 Subaru Forester X
2004-2005 Subaru Forester XT
2005 Subaru Forester XS L.L. Bean Edition
2005 Subaru Forester XT Premium
2006-2008 Subaru Forester X L.L. Bean Edition
2006-2010 Subaru Forester XT Limited
2008 Subaru Forester Sports 2.5 X
2008 Subaru Forester Sports 2.5 XT
2009 Subaru Forester XT
2009-2013 Subaru Forester X Limited
2009-2013 Subaru Forester X Premium
2010-2013 Subaru Forester XT Premium
2011-2013 Subaru Forester X Touring
2011-2013 Subaru Forester XT Touring
1998-2005 Subaru Impreza RS
2002-2004 Subaru Impreza Outback
2002-2004 Subaru Impreza TS
2004-2014 Subaru Impreza WRX STI
2005-2011 Subaru Impreza Outback Sport
2006-2007 Subaru Impreza WRX Limited
2006-2007 Subaru Impreza WRX TR
2006-2011 Subaru Impreza 2.5i
2006-2014 Subaru Impreza WRX
2007 Subaru Impreza WRX STI Limited
2009-2010 Subaru Impreza 2.5 GT
2009-2014 Subaru Impreza WRX Premium
2010 Subaru Impreza WRX STI Special Edition
2010-2011 Subaru Impreza 2.5i Premium
2010-2014 Subaru Impreza WRX Limited
2011-2014 Subaru Impreza WRX STI Limited
1996 Subaru Legacy LS
1996-1997 Subaru Legacy LSi
1996-1998 Subaru Legacy Postal
1996-1999 Subaru Legacy Outback
1996-2000 Subaru Legacy Brighton
1996-2004 Subaru Legacy L
1996-2004 Subaru Legacy GT
1997 Subaru Legacy Outback Limited
1998 Subaru Legacy GT Limited
1999 Subaru Legacy Outback Limited
1999 Subaru Legacy SUS 30th Anniversary
1999 Subaru Legacy L 30th Anniversary
1999 Subaru Legacy Limited 30th Anniversary
2000-2002 Subaru Legacy GT Limited
2003 Subaru Legacy L SE
2004 Subaru Legacy L 35th Anniversary
2001-2003 Subaru Outback VDC
2001-2004 Subaru Outback L.L. Bean
2001-2004 Subaru Outback Base
2001-2005 Subaru Outback Limited
2002-2004 Subaru Outback H6
2004 Subaru Outback H6 35th Anniversary Edition
2004 Subaru Outback H6 VDC

…and 32 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Watch in action

Mishimoto 68°C Racing Thermostat for Subaru WRX & WRX STi (2001-2007)

Enhance the cooling performance of your Subaru WRX or WRX STi (2001-2007) with the Mishimoto 68°C Racing Thermostat. This performance thermostat is engineered to open at a lower temperature than the stock unit, promoting quicker engine warm-up and more efficient heat dissipation, crucial for maintaining optimal engine temperatures during spirited driving or track use.

Key Features and Benefits:

  • Lower Opening Temperature: At 68°C (154°F), this thermostat opens significantly sooner than the stock unit, allowing coolant to circulate through the radiator earlier.
  • Improved Cooling Efficiency: Facilitates better heat management by enabling faster coolant flow, helping to prevent heat soak and maintain consistent engine temperatures.
  • Faster Engine Warm-up: While focused on cooling, the lower opening temp can also contribute to reaching optimal operating temperature more quickly in certain conditions.
  • Direct Replacement: Designed as a direct fit for the specified Subaru models, ensuring easy installation without requiring modifications.
  • Durable Construction: Built to withstand the demanding conditions of performance driving, ensuring reliability and longevity.

Vehicle Fitment:

This Mishimoto Racing Thermostat is compatible with the following Subaru models:

  • Subaru WRX (2001-2007)
  • Subaru WRX STi (2001-2007)

Also fits select Saab 9-2X models (2005-2006) and Subaru Forester models (1998-2008) with compatible engines. Please verify fitment for your specific vehicle. Upgrade your cooling system with Mishimoto's precision-engineered thermostat, available at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2003 Subaru Baja Base
2003-2006 Subaru Baja Sport
2004-2006 Subaru Baja Turbo
1998-2002 Subaru Forester Base
1998-2002 Subaru Forester L
1998-2002 Subaru Forester S
2003-2005 Subaru Forester XS
2003-2013 Subaru Forester X
2004-2005 Subaru Forester XT
2005 Subaru Forester XS L.L. Bean Edition
2005 Subaru Forester XT Premium
2006-2008 Subaru Forester X L.L. Bean Edition
2006-2010 Subaru Forester XT Limited
2008 Subaru Forester Sports 2.5 X
2008 Subaru Forester Sports 2.5 XT
2009 Subaru Forester XT
2009-2013 Subaru Forester X Limited
2009-2013 Subaru Forester X Premium
2010-2013 Subaru Forester XT Premium
2011-2013 Subaru Forester X Touring
2011-2013 Subaru Forester XT Touring
1998-2005 Subaru Impreza RS
2002-2004 Subaru Impreza Outback
2002-2004 Subaru Impreza TS
2004-2014 Subaru Impreza WRX STI
2005-2011 Subaru Impreza Outback Sport
2006-2007 Subaru Impreza WRX Limited
2006-2007 Subaru Impreza WRX TR
2006-2011 Subaru Impreza 2.5i
2006-2014 Subaru Impreza WRX
2007 Subaru Impreza WRX STI Limited
2009-2010 Subaru Impreza 2.5 GT
2009-2014 Subaru Impreza WRX Premium
2010 Subaru Impreza WRX STI Special Edition
2010-2011 Subaru Impreza 2.5i Premium
2010-2014 Subaru Impreza WRX Limited
2011-2014 Subaru Impreza WRX STI Limited
1996 Subaru Legacy LS
1996-1997 Subaru Legacy LSi
1996-1998 Subaru Legacy Postal
1996-1999 Subaru Legacy Outback
1996-2000 Subaru Legacy Brighton
1996-2004 Subaru Legacy L
1996-2004 Subaru Legacy GT
1997 Subaru Legacy Outback Limited
1998 Subaru Legacy GT Limited
1999 Subaru Legacy Outback Limited
1999 Subaru Legacy SUS 30th Anniversary
1999 Subaru Legacy L 30th Anniversary
1999 Subaru Legacy Limited 30th Anniversary
2000-2002 Subaru Legacy GT Limited
2003 Subaru Legacy L SE
2004 Subaru Legacy L 35th Anniversary
2001-2003 Subaru Outback VDC
2001-2004 Subaru Outback L.L. Bean
2001-2004 Subaru Outback Base
2001-2005 Subaru Outback Limited
2002-2004 Subaru Outback H6
2004 Subaru Outback H6 35th Anniversary Edition
2004 Subaru Outback H6 VDC

…and 32 additional fitments. Contact us to confirm yours.

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