SKU: 2015-8
GSC P-D EJ Series EJ205/EJ207/EJ257 Chrome Polished Super Alloy Exhaust Valve 32mm Head STD Set of 8 2002-2021 Subaru WRX STI
GSC Power-Division EJ series exhaust valves deliver reliable performance for turbocharged Subaru EJ205 EJ207 EJ257 engines found in WRX and STI models. This set of 8 valves features 32mm standard head diameter for direct fit in stock cylinder heads. Engine builders choose these for improved exhaust flow and heat resistance during high boost tuning.
Key Features
- Super Alloy Material: Handles extreme combustion temperatures and boost levels beyond stock limits in EJ turbo engines
- Chrome Polished Stems: Minimizes friction and guide wear for smoother operation and longer valve life
- Swirl Polished Heads: Enhances exhaust gas evacuation to support higher RPM power output
- One-Piece Forged Construction: Provides structural integrity for aggressive cam profiles and valvetrain upgrades
- Precise STD Sizing: 32mm head x 6.97mm stem matches OEM specs with performance improvements
Product Notes
- Set of 8 exhaust valves covers full cylinder head refresh on 4-cylinder EJ engines
- Standard length suits stock head setups without machining
- Packaged in protective sleeves to prevent damage during transit
Installation Notes
- Professional installation recommended.
- Inspect valve guides and replace seals during install for optimal sealing
- Compatible with stock or aftermarket valve springs and retainers
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2007 | Subaru | Impreza | WRX |
| 2004-2007 | Subaru | Impreza | WRX STI |
| 2008-2014 | Subaru | Impreza | WRX STI |
| 2015-2021 | Subaru | WRX | STI |
| 2005-2009 | Subaru | Legacy | GT Spec B |
Why Choose GSC Power-Division?
- Proven in Subaru motorsports and drag racing applications
- Manufactured with tight tolerances for consistent performance
- Backed by engineering focused on turbocharged 4-cylinder heads
Frequently Asked Questions
-
Q: Will these valves fit my 2004 STI EJ257 head?
A: Yes direct fit for all EJ257 cylinder heads in 2004-2021 STI models with 32mm STD sizing -
Q: What finish and material details?
A: Chrome polished stems on proprietary super alloy resist heat wear paired with swirl polished heads for flow -
Q: What warranty coverage?
A: Limited lifetime warranty against manufacturing defects when installed by certified shop
Shipping & Handling
- Method: Standard ground shipping
- Availability: In stock - ships same or next business day
- Packaging: Protective box 7 x 4 x 2 inches
- Weight: 0.65 lbs
GSC Power Division
GSC Power Division is a manufacturer of precision-engineered camshafts, valve springs, and valvetrain components designed for high-performance and competition engines across domestic, import, and diesel platforms. Founded by engineers with deep roots in motorsport, GSC Power Division components are machined to exacting tolerances and heat-treated to survive the demands of forced induction and high-rpm applications that destroy stock valvetrain parts. The brand is particularly well-known in the Mitsubishi Evo, Subaru STI, Nissan RB, and Toyota 2JZ communities where aggressive camshaft profiles are essential for extracting maximum power from turbocharged four-cylinder and six-cylinder engines. Whether building for drag racing, road course competition, or a high-powered street car, GSC Power Division camshafts and valve springs are a proven upgrade path. Popular Upgrades GSC Power Division S1, S2, and S3 camshafts are the most popular selections, with each profile offering progressivel...
View GSC Power Division Products
Valves
Welcome to our Valves collection, where quality meets functionality. Our carefully curated selection includes a variety of valves suited for different applications and industries. Whether you are in construction, manufacturing, or plumbing, we have the perfect valve solutions for you. Why Choose Our Valves? High Quality: Each valve in our collection is manufactured to meet strict quality standards, ensuring durability and reliability. Wide Range: We offer a diverse range of valves. Competitive Pricing: Get the best value for your money with our competitively priced valves without compromising on quality. Expert Support: Our knowledgeable team is here to help you find the right valve for your specific needs. Applications of Our Valves Our valves are versatile and can be used in a variety of engines for various makes and modles. Shop Now! Explore our Valves collection today and find the perfect solution for your project. With our user-friendly Shopify store, shopping for valv...
View Valves Products
Valves & Components
Browse all of our valves and valvetrain components at Black Ops Auto Works, including engine valves, valve covers, valve cover gaskets, valve guides, valve springs, retainers, valve locks, valve seals, lash caps, and related valvetrain hardware for performance builds, engine refreshes, and high-horsepower applications. Whether you are rebuilding a cylinder head, upgrading your valvetrain for higher RPM, or replacing worn valve train components, this collection is built for customers searching for engine valves, valve springs and retainers, valve cover gaskets, performance valve covers, and valvetrain upgrades. Shop Top Valvetrain Brands Find trusted brands in the valve and valvetrain category, including: GSC Power Division Supertech Brian Crower Ferrea Manley Performance Cometic Granatelli Moroso BLOX Racing These brands are known for performance intake valves, exhaust valves, valve spring kits, titanium retainers, valve guides, valve locks, valve seals, billet valve covers, an...
View Valves & Components Products


