SKU: 2015-01 | UPC: GSC2015-01
GSC P-D EJ Series EJ205/EJ207/EJ257 Chrome Polished Super Alloy Exhaust Valve 32mm Head STD 1999-2015 Subaru Impreza WRX STI
GSC Power-Division P-D EJ series exhaust valves deliver reliable performance for EJ205 EJ207 and EJ257 engines in Subaru Impreza WRX and STI models from 1999 to 2015 including Saab 9-2X. This 32mm head standard size valve features one-piece forged super alloy construction for extreme heat resistance and strength in turbocharged applications. It supports higher RPM and boost levels with reduced friction and extended valve life.
Key Features
- One-Piece Forged Super Alloy: Heat treated to 195000 psi tensile strength resists fatigue and warping under high heat and boost
- Chrome Polished Stem: 5.5mm diameter stem finish cuts friction by 35% for less guide wear and smoother operation
- Precise Dimensions: 32.00mm head diameter 5.50mm stem 112.95mm overall length ensures drop-in fit with stock heads
- Enhanced Exhaust Flow: Optimized design improves scavenging and power output in modified EJ turbo engines
- Durability Focus: Withstands 1000+ degrees F for track or street use without stem stretch or seat recession
Product Notes
- Sold individually pair with intake valves for full set replacement
- Inspect valve guides and seats before install for best results
- Ships in protective foam sleeve to prevent damage
Installation Notes
- Professional installation recommended.
- Valve lash set to 0.011-0.013 inch hot for EJ applications
- Compatible with OEM retainers springs and seats no special hardware needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2005 | Subaru | Impreza | RS |
| 1999-2004 | Subaru | Impreza | Outback |
| 1999-2001 | Subaru | Impreza | L |
| 2002-2004 | Subaru | Impreza | TS |
| 2002-2014 | Subaru | Impreza | WRX |
| 2004-2014 | Subaru | Impreza | WRX STI |
| 2005 | Saab | 9-2X | Aero |
| 2005-2011 | Subaru | Impreza | Outback Sport |
| 2006-2011 | Subaru | Impreza | 2.5i |
| 2009-2010 | Subaru | Impreza | 2.5 GT |
| 2010-2011 | Subaru | Impreza | 2.5i Premium |
| 2010-2014 | Subaru | Impreza | WRX Limited |
| 2010-2014 | Subaru | Impreza | WRX 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 | Launch Edition |
| 2015 | Subaru | WRX STI | Limited |
Why Choose GSC Power-Division?
- Proven in professional racing with EJ builds worldwide
- Engineered for 500+ whp reliability in daily driven cars
- Made in USA with tight tolerances under 0.001 inch
Frequently Asked Questions
- Q: Does this fit 2004-2007 Subaru STI EJ257 heads?
A: Yes direct fit for all EJ257 closed deck heads including USDM JDM and Euro STI models - Q: What material resists turbo heat best?
A: Forged super alloy construction handles 1100+ F exhaust temps with chrome stem for low friction - Q: Is valve sealing stock or needs machining?
A: Matches OEM 45 degree seat angle no machining required uses standard multi-angle seats
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Individual protective sleeve in 6 x 4 x 1 inch box
- Weight: 0.1 lbs





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