-15%
GSC P-D Subaru Subaru EJ205/EJ207/EJ257 Chrome Polished Exhaust Valve - 33mm Head (+1mm) - Single GSC Power Division GSC2013-01
Click to zoom in

GSC P-D Subaru Subaru EJ205/EJ207/EJ257 Chrome Polished Exhaust Valve - 33mm Head (+1mm) - Single

GSC2013-01
GSC2013-01
Valves
11 Units In Stock - Ships Next Business Day
$ 25.38 $ 21.57
$ 21.57

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

Request For Information

Have questions about GSC P-D Subaru Subaru EJ205/EJ207/EJ257 Chrome Polished Exhaust Valve - 33mm Head (+1mm) - Single? Fill out the form below and we'll get back to you by the next business day.
GSC Power Division

GSC Power Division

GSC Power Division camshafts and valvetrain parts for turbocharged import engines are stocked at Black Ops Auto Works. Shop camshafts, valve springs, retainers, valves, and head studs engineered for the Toyota 2JZ, Nissan RB26 and VR38DETT, Mitsubishi 4G63, Subaru EJ257 and FA20, and Honda K20 platforms. Every product is filterable by engine code, cam grind, and application so the correct part ships the first time. Black Ops Auto Works carries 407 GSC Power Division SKUs across camshaft, valvetrain, and engine internal categories. What This Brand Covers GSC Power Division is a specialist engine internals brand focused on camshafts, valve springs, retainers, and valves engineered specifically for high output turbocharged import engines. The catalog is built around specific engine codes rather than complete vehicles, which means the same part often applies across multiple chassis that share an engine platform. Brand Focus GSC Power Division designs valvetrain components for engine...

View GSC Power Division Products
Valves

Valves

Engine valves for import, domestic, and European performance builds are stocked at Black Ops Auto Works. Shop intake valves, exhaust valves, single-groove and triple-groove valves, Inconel and titanium valves, and complete valve sets for 2JZ, RB26, RB25, VR38DETT, K-series, EA888, EA113, FA20, S58, B58, and HEMI 5.4L and 5.7L applications. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 577 valve SKUs across intake, exhaust, and material specification categories. What This Category Covers The Valves category covers replacement and upgraded intake and exhaust valves for naturally aspirated, turbocharged, and supercharged cylinder heads. Coverage spans budget-focused OE-spec valves through race-grade Inconel and titanium valves built for sustained high RPM and boosted horsepower. Categories Included Intake valves, exhaust valves, single valves sold individually, and full valve set...

View Valves Products
Valves & Components

Valves & Components

Valves and valvetrain components for import, domestic, and performance engine platforms are stocked at Black Ops Auto Works. Shop intake valves, exhaust valves, valve covers, valve cover gaskets, valve guides, valve springs, retainers, valve locks, valve seals, and lash caps for Toyota 2JZ and Supra, Honda K-Series, Nissan RB and SR20, BMW B58 and S58, Subaru FA20, Ford Coyote, and GM LS platforms. Every part is filterable by year, make, model, and engine so builders and tuners can confirm fitment before ordering. Black Ops Auto Works carries 1,391 valvetrain SKUs from proven performance brands. What This Category Covers Valves and valvetrain components manage airflow into and out of the combustion chamber and keep the valvetrain sealed and stable at high RPM. This collection spans intake valves, exhaust valves, valve covers, valve cover gaskets, valve guides, valve springs, retainers, valve locks, valve seals, lash caps, and cam follower shims. Why the Valvetrain Matters for Pe...

View Valves & Components Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×