GSC Power Division Subaru EJ20/EJ25 Exhaust Valve 32mm STD — 99-15 Subaru Impreza WRX STI

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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 GSC Power Division

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

Watch in action

Performance Exhaust Valves for Subaru EJ Engines

Upgrade your Subaru EJ20 or EJ25 engine with the GSC Power Division Chrome Polished Exhaust Valve. Designed for the Impreza WRX and STI platforms, this 32mm standard-size valve offers a significant improvement over factory components. Whether you are performing a routine rebuild or a full performance overhaul, these valves provide the durability needed for Subaru's turbocharged boxer engines.

Technical Highlights:

  • Compatibility: Fits EJ205, EJ207, and EJ257 engine blocks.
  • Precision Machining: 32mm head diameter ensures a perfect OEM fit.
  • Chrome Polished: Enhanced finish to reduce friction and improve exhaust flow.
  • Durability: Built to withstand the unique thermal demands of the Subaru boxer layout.

Subaru engines are known for their high exhaust gas temperatures, making valve quality paramount. GSC Power Division valves are manufactured to strict tolerances, ensuring consistent performance and long-term reliability. This single valve is a perfect solution for replacing a damaged component or completing a cylinder head refresh on your WRX or STI. Trust in the quality of GSC Power Division to keep your Subaru running strong under boost. Shop the best selection of engine internals at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005 Saab 9-2X Aero
1999-2001 Subaru Impreza L
1999-2004 Subaru Impreza Outback
1999-2005 Subaru Impreza RS
2002-2004 Subaru Impreza TS
2002-2014 Subaru Impreza WRX
2004-2014 Subaru Impreza WRX STI
2006-2007 Subaru Impreza WRX TR
2006-2007 Subaru Impreza WRX Limited
2006-2011 Subaru Impreza 2.5i
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
2011-2014 Subaru Impreza WRX STI Limited
2012-2014 Subaru Impreza Base
2012-2014 Subaru Impreza Limited
2012-2014 Subaru Impreza Premium
2012-2014 Subaru Impreza Sport Limited
2012-2014 Subaru Impreza Sport Premium
2015 Subaru WRX STI Base
2015 Subaru WRX STI Limited

Product Details

Product Description
Part Numbers
Sizing & Fit

About GSC Power Division

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

Watch in action

Performance Exhaust Valves for Subaru EJ Engines

Upgrade your Subaru EJ20 or EJ25 engine with the GSC Power Division Chrome Polished Exhaust Valve. Designed for the Impreza WRX and STI platforms, this 32mm standard-size valve offers a significant improvement over factory components. Whether you are performing a routine rebuild or a full performance overhaul, these valves provide the durability needed for Subaru's turbocharged boxer engines.

Technical Highlights:

  • Compatibility: Fits EJ205, EJ207, and EJ257 engine blocks.
  • Precision Machining: 32mm head diameter ensures a perfect OEM fit.
  • Chrome Polished: Enhanced finish to reduce friction and improve exhaust flow.
  • Durability: Built to withstand the unique thermal demands of the Subaru boxer layout.

Subaru engines are known for their high exhaust gas temperatures, making valve quality paramount. GSC Power Division valves are manufactured to strict tolerances, ensuring consistent performance and long-term reliability. This single valve is a perfect solution for replacing a damaged component or completing a cylinder head refresh on your WRX or STI. Trust in the quality of GSC Power Division to keep your Subaru running strong under boost. Shop the best selection of engine internals at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005 Saab 9-2X Aero
1999-2001 Subaru Impreza L
1999-2004 Subaru Impreza Outback
1999-2005 Subaru Impreza RS
2002-2004 Subaru Impreza TS
2002-2014 Subaru Impreza WRX
2004-2014 Subaru Impreza WRX STI
2006-2007 Subaru Impreza WRX TR
2006-2007 Subaru Impreza WRX Limited
2006-2011 Subaru Impreza 2.5i
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
2011-2014 Subaru Impreza WRX STI Limited
2012-2014 Subaru Impreza Base
2012-2014 Subaru Impreza Limited
2012-2014 Subaru Impreza Premium
2012-2014 Subaru Impreza Sport Limited
2012-2014 Subaru Impreza Sport Premium
2015 Subaru WRX STI Base
2015 Subaru WRX STI Limited

Product Details

Product Description

About GSC Power Division

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

Watch in action

Performance Exhaust Valves for Subaru EJ Engines

Upgrade your Subaru EJ20 or EJ25 engine with the GSC Power Division Chrome Polished Exhaust Valve. Designed for the Impreza WRX and STI platforms, this 32mm standard-size valve offers a significant improvement over factory components. Whether you are performing a routine rebuild or a full performance overhaul, these valves provide the durability needed for Subaru's turbocharged boxer engines.

Technical Highlights:

  • Compatibility: Fits EJ205, EJ207, and EJ257 engine blocks.
  • Precision Machining: 32mm head diameter ensures a perfect OEM fit.
  • Chrome Polished: Enhanced finish to reduce friction and improve exhaust flow.
  • Durability: Built to withstand the unique thermal demands of the Subaru boxer layout.

Subaru engines are known for their high exhaust gas temperatures, making valve quality paramount. GSC Power Division valves are manufactured to strict tolerances, ensuring consistent performance and long-term reliability. This single valve is a perfect solution for replacing a damaged component or completing a cylinder head refresh on your WRX or STI. Trust in the quality of GSC Power Division to keep your Subaru running strong under boost. Shop the best selection of engine internals at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005 Saab 9-2X Aero
1999-2001 Subaru Impreza L
1999-2004 Subaru Impreza Outback
1999-2005 Subaru Impreza RS
2002-2004 Subaru Impreza TS
2002-2014 Subaru Impreza WRX
2004-2014 Subaru Impreza WRX STI
2006-2007 Subaru Impreza WRX TR
2006-2007 Subaru Impreza WRX Limited
2006-2011 Subaru Impreza 2.5i
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
2011-2014 Subaru Impreza WRX STI Limited
2012-2014 Subaru Impreza Base
2012-2014 Subaru Impreza Limited
2012-2014 Subaru Impreza Premium
2012-2014 Subaru Impreza Sport Limited
2012-2014 Subaru Impreza Sport Premium
2015 Subaru WRX STI Base
2015 Subaru WRX STI Limited

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