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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
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