GSC Super Alloy Exhaust Valve – EJ20/EJ257 Turbo (GSC2015-01)
Engineered for Extreme Performance
Designed for high-horsepower Subaru EJ20 and EJ257 Turbo builds, the GSC Power-Division Super Alloy Exhaust Valve delivers unmatched durability under extreme exhaust gas temperatures—up to 2000°F. Whether you're pushing limits on the track or street, this valve is built to last.
Precision Specs
- Part Number: GSC2015-01
- Standard Size: 32mm
- Stem Diameter: 6.0mm
- Overall Length: 104.65mm
- Head Diameter: 32.00mm
Built for Heat, Speed, and Longevity
Each valve features a chrome-polished stem for enhanced lubricity and reduced wear—especially when paired with GSC Manganese bronze valve guides. The under-head dish is optimized for weight reduction, while swirl-polished and backcut heads improve airflow without compromising strength.
Key Benefits:
- Handles extreme EGTs up to 2000°F
- Chrome-polished stem for smoother operation
- Lightweight design with under-head dish
- Swirl-polished and backcut for airflow gains
- Ideal for high-performance EJ turbo setups
Upgrade Your EJ Build with Confidence
When reliability and performance matter, the GSC Super Alloy Exhaust Valve is the go-to choice for serious Subaru EJ enthusiasts. Built to thrive under pressure, it’s the perfect match for aggressive turbo applications.
Fitment:
- 2002–2005 Subaru WRX (EJ205 Turbo)
- 2004–2007 Subaru WRX STI (EJ257 Turbo)
- 2006–2014 Subaru WRX (EJ255 Turbo)
- 2008–2021 Subaru WRX STI (EJ257 Turbo)
- 1989–2001 Subaru Legacy GT/RS (EJ20 Turbo, JDM)
- 1992–2000 Subaru Impreza WRX (EJ20 Turbo, JDM)
- 1999–2001 Subaru Impreza WRX STI (EJ207 Turbo, JDM)
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
