GSC Standard Exhaust Valve Guide Set for Porsche 996 / 997 Turbo 911 GSC3057-12
The GSC3057-12 Exhaust Valve Guide Set includes 12 standard-sized guides designed for Porsche 996 and 997 Turbo 911 engines. Manufactured by GSC Power Division, these guides deliver precision fitment and long-term reliability for high-performance valvetrain builds.
Available Options
- Standard size sold as a complete set of 12 or individually
- Oversized variants available individually in +0.001" and +0.003" sizes
Technical Specifications GSC3057
| Specification | Inches | Millimeters |
|---|---|---|
| Total Length | 1.690" | 42.93mm |
| Outer Diameter | 0.4157" | 10.56mm |
| Valve Stem Diameter | | 6mm |
Ideal for Porsche Turbo builds, this standard valve guide set ensures consistent performance and precision fitment across all 12 exhaust ports.
Fitment:
- 2001 Porsche 911 Turbo (996)
- 2002 Porsche 911 Turbo (996)
- 2003 Porsche 911 Turbo (996)
- 2004 Porsche 911 Turbo (996)
- 2005 Porsche 911 Turbo (996)
- 2006 Porsche 911 Turbo (997)
- 2007 Porsche 911 Turbo (997)
- 2008 Porsche 911 Turbo (997)
- 2009 Porsche 911 Turbo (997)
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