Koyo Radiator — Fits 2005-2019 Subaru WRX/STI, Legacy GT, Baja, Outback XT

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SKU: KOYVH091662
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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 Koyo

Koyo engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Koyo lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Koyo High-Performance Radiator for Subaru WRX, STI, Legacy GT, Baja, and Outback XT

Ensure optimal engine temperatures and prevent overheating with this premium Koyo radiator, engineered for a direct fit on a wide range of Subaru models. Designed specifically for manual transmission vehicles, this radiator offers superior cooling efficiency compared to stock units, making it an ideal upgrade for daily drivers and performance enthusiasts alike.

Key Features & Benefits:

  • Direct Fit Replacement: Designed to seamlessly integrate into your Subaru's cooling system, simplifying installation.
  • Enhanced Cooling Capacity: Koyo's advanced core technology provides significantly improved heat dissipation, crucial for high-performance driving and demanding conditions.
  • Durable Construction: Built with high-quality materials to withstand the rigors of daily use and spirited driving, ensuring long-lasting reliability.
  • Manual Transmission Specific: Engineered for manual transmission models, ensuring proper fitment and function.
  • Wide Vehicle Compatibility: Fits a broad spectrum of Subaru models including the Baja Turbo (2005-2006), Impreza WRX/STI (2008-2014), Legacy GT (2005-2012), Outback XT (2005-2009), and WRX/STI (2015-2019).

This Koyo radiator is more than just a replacement part; it's an investment in your Subaru's longevity and performance. By maintaining lower, more stable engine temperatures, you reduce the risk of heat-related damage and can push your vehicle harder with confidence. The integrated filler neck ensures easy fluid top-offs, and the adapter provision thread (M14x1.25) offers flexibility for certain setups. Experience the Koyo difference and keep your Subaru running cool under pressure.

Shop GGCRACING for Koyo radiators and performance cooling solutions.

Vehicle Fitment

Years Make Model Trim
2005-2006 Subaru Baja Turbo
2008-2014 Subaru Impreza WRX
2008-2014 Subaru Impreza WRX STI
2009-2010 Subaru Impreza 2.5 GT
2009-2014 Subaru Impreza WRX Premium
2010-2014 Subaru Impreza WRX Limited
2011-2014 Subaru Impreza WRX STI Limited
2005 Subaru Legacy GT Limited
2005-2006 Subaru Legacy GT
2006-2009 Subaru Legacy GT spec.B
2007-2009 Subaru Legacy GT Limited
2010-2012 Subaru Legacy 2.5GT
2005-2006 Subaru Outback XT
2005-2009 Subaru Outback XT Limited
2015-2019 Subaru WRX Base
2015-2019 Subaru WRX Premium
2015 Subaru WRX STI Launch Edition
2015-2019 Subaru WRX STI Base
2015-2019 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2018 Subaru WRX STI Type RA
2019 Subaru WRX STI S209

Product Details

Product Description
Part Numbers
Sizing & Fit

About Koyo

Koyo engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Koyo lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Koyo High-Performance Radiator for Subaru WRX, STI, Legacy GT, Baja, and Outback XT

Ensure optimal engine temperatures and prevent overheating with this premium Koyo radiator, engineered for a direct fit on a wide range of Subaru models. Designed specifically for manual transmission vehicles, this radiator offers superior cooling efficiency compared to stock units, making it an ideal upgrade for daily drivers and performance enthusiasts alike.

Key Features & Benefits:

  • Direct Fit Replacement: Designed to seamlessly integrate into your Subaru's cooling system, simplifying installation.
  • Enhanced Cooling Capacity: Koyo's advanced core technology provides significantly improved heat dissipation, crucial for high-performance driving and demanding conditions.
  • Durable Construction: Built with high-quality materials to withstand the rigors of daily use and spirited driving, ensuring long-lasting reliability.
  • Manual Transmission Specific: Engineered for manual transmission models, ensuring proper fitment and function.
  • Wide Vehicle Compatibility: Fits a broad spectrum of Subaru models including the Baja Turbo (2005-2006), Impreza WRX/STI (2008-2014), Legacy GT (2005-2012), Outback XT (2005-2009), and WRX/STI (2015-2019).

This Koyo radiator is more than just a replacement part; it's an investment in your Subaru's longevity and performance. By maintaining lower, more stable engine temperatures, you reduce the risk of heat-related damage and can push your vehicle harder with confidence. The integrated filler neck ensures easy fluid top-offs, and the adapter provision thread (M14x1.25) offers flexibility for certain setups. Experience the Koyo difference and keep your Subaru running cool under pressure.

Shop GGCRACING for Koyo radiators and performance cooling solutions.

Vehicle Fitment

Years Make Model Trim
2005-2006 Subaru Baja Turbo
2008-2014 Subaru Impreza WRX
2008-2014 Subaru Impreza WRX STI
2009-2010 Subaru Impreza 2.5 GT
2009-2014 Subaru Impreza WRX Premium
2010-2014 Subaru Impreza WRX Limited
2011-2014 Subaru Impreza WRX STI Limited
2005 Subaru Legacy GT Limited
2005-2006 Subaru Legacy GT
2006-2009 Subaru Legacy GT spec.B
2007-2009 Subaru Legacy GT Limited
2010-2012 Subaru Legacy 2.5GT
2005-2006 Subaru Outback XT
2005-2009 Subaru Outback XT Limited
2015-2019 Subaru WRX Base
2015-2019 Subaru WRX Premium
2015 Subaru WRX STI Launch Edition
2015-2019 Subaru WRX STI Base
2015-2019 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2018 Subaru WRX STI Type RA
2019 Subaru WRX STI S209

Product Details

Product Description

About Koyo

Koyo engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Koyo lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Koyo High-Performance Radiator for Subaru WRX, STI, Legacy GT, Baja, and Outback XT

Ensure optimal engine temperatures and prevent overheating with this premium Koyo radiator, engineered for a direct fit on a wide range of Subaru models. Designed specifically for manual transmission vehicles, this radiator offers superior cooling efficiency compared to stock units, making it an ideal upgrade for daily drivers and performance enthusiasts alike.

Key Features & Benefits:

  • Direct Fit Replacement: Designed to seamlessly integrate into your Subaru's cooling system, simplifying installation.
  • Enhanced Cooling Capacity: Koyo's advanced core technology provides significantly improved heat dissipation, crucial for high-performance driving and demanding conditions.
  • Durable Construction: Built with high-quality materials to withstand the rigors of daily use and spirited driving, ensuring long-lasting reliability.
  • Manual Transmission Specific: Engineered for manual transmission models, ensuring proper fitment and function.
  • Wide Vehicle Compatibility: Fits a broad spectrum of Subaru models including the Baja Turbo (2005-2006), Impreza WRX/STI (2008-2014), Legacy GT (2005-2012), Outback XT (2005-2009), and WRX/STI (2015-2019).

This Koyo radiator is more than just a replacement part; it's an investment in your Subaru's longevity and performance. By maintaining lower, more stable engine temperatures, you reduce the risk of heat-related damage and can push your vehicle harder with confidence. The integrated filler neck ensures easy fluid top-offs, and the adapter provision thread (M14x1.25) offers flexibility for certain setups. Experience the Koyo difference and keep your Subaru running cool under pressure.

Shop GGCRACING for Koyo radiators and performance cooling solutions.

Vehicle Fitment

Years Make Model Trim
2005-2006 Subaru Baja Turbo
2008-2014 Subaru Impreza WRX
2008-2014 Subaru Impreza WRX STI
2009-2010 Subaru Impreza 2.5 GT
2009-2014 Subaru Impreza WRX Premium
2010-2014 Subaru Impreza WRX Limited
2011-2014 Subaru Impreza WRX STI Limited
2005 Subaru Legacy GT Limited
2005-2006 Subaru Legacy GT
2006-2009 Subaru Legacy GT spec.B
2007-2009 Subaru Legacy GT Limited
2010-2012 Subaru Legacy 2.5GT
2005-2006 Subaru Outback XT
2005-2009 Subaru Outback XT Limited
2015-2019 Subaru WRX Base
2015-2019 Subaru WRX Premium
2015 Subaru WRX STI Launch Edition
2015-2019 Subaru WRX STI Base
2015-2019 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2018 Subaru WRX STI Type RA
2019 Subaru WRX STI S209

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