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SKU: 2013-01 | UPC: GSC2013-01
GSC P-D Subaru EJ205/EJ207/EJ257 Chrome Polished Exhaust Valve - 33mm Head (+1mm) - Single Fits 1999-2015 Impreza WRX STI
Upgrade your Subaru with the GSC Power-Division chrome polished exhaust valve designed for EJ205 EJ207 and EJ257 engines in 1999-2015 Impreza models including WRX and STI variants. This single valve features a 33mm head diameter and +1mm length over stock for better exhaust evacuation and valve stability under boost. It handles high RPM and heat in performance builds while cutting friction for smoother operation.
Key Features
- Chrome Polished Finish: Cuts guide wear dissipates heat faster extends service life in turbo applications
- 33mm Head +1mm Length: Matches EJ turbo flow needs improves scavenging without clearance issues
- 21-4N Stainless Steel: One-piece forged heat treated to 160000 PSI tensile strength resists fatigue
- Swirl Polished Back Cut: Boosts exhaust flow reduces retainer stress quiets valve train
- Micro Finished Seat: Seals tight prevents leaks supports high boost sealing
Product Notes
- Sold individually order eight for complete EJ20 or EJ25 cylinder head
- Compatible with stock dual springs or upgraded beehive retainers
- Secure packaging prevents damage during transit
Installation Notes
- Professional installation recommended.
- Check valve guide clearance before install lap seats if needed
- Compatible with OEM hardware set lash to spec after assembly
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2005-2011 | Subaru | Impreza | Outback Sport |
| 2012-2014 | Subaru | Impreza | Premium |
| 1999-2005 | Subaru | Impreza | RS |
| 2012-2014 | Subaru | Impreza | Sport Limited |
| 2012-2014 | Subaru | Impreza | Sport Premium |
| 2002-2004 | Subaru | Impreza | TS |
| 2002-2014 | Subaru | Impreza | WRX |
| 2005 | Saab | 9-2X | Aero |
| 2009-2010 | Subaru | Impreza | 2.5 GT |
| 2006-2011 | Subaru | Impreza | 2.5i |
| 2010-2011 | Subaru | Impreza | 2.5i Premium |
| 2012-2014 | Subaru | Impreza | Base |
| 1999-2001 | Subaru | Impreza | L |
| 2012-2014 | Subaru | Impreza | Limited |
| 1999-2004 | Subaru | Impreza | Outback |
| 2006-2007 | Subaru | Impreza | WRX Limited |
| 2010-2014 | Subaru | Impreza | WRX Limited |
| 2009-2014 | Subaru | Impreza | WRX Premium |
| 2004-2014 | Subaru | Impreza | WRX STI |
| 2007 | Subaru | Impreza | WRX STI Limited |
| 2011-2014 | Subaru | Impreza | WRX STI Limited |
| 2010 | Subaru | Impreza | WRX STI Special Edition |
| 2006-2007 | Subaru | Impreza | WRX TR |
| 2015 | Subaru | WRX STI | Base |
| 2015 | Subaru | WRX STI | Launch Edition |
| 2015 | Subaru | WRX STI | Limited |
Why Choose GSC Power-Division?
- Engineered for motorsport with real-world track testing
- Manufactured to exact tolerances for drop-in reliability
- Backed by limited lifetime warranty on defects
Frequently Asked Questions
-
Q: Will this valve fit 2004-2007 Subaru STI EJ257 heads?
A: Yes direct fit for EJ257 EJ205 EJ207 cylinder heads in listed Impreza STI models -
Q: What finish and material does it use?
A: Polish chrome finish on 21-4N stainless steel one-piece forged for heat resistance and low friction -
Q: What warranty applies?
A: Limited lifetime warranty covers manufacturing defects when installed properly
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Individual protective box
- Weight: 0.10 lbs
GSC Power Division
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