GSC Standard Intake Valve Guide Set for Porsche 996 / 997 Turbo 911 – GSC3058-12
The GSC3058-12 Intake Valve Guide Set includes 12 standard-sized guides engineered for Porsche 996 and 997 Turbo 911 engines. Manufactured by GSC Power Division, these guides deliver consistent fitment and durability for high-performance valvetrain builds.
Fitment and Sizing Options
- Standard size – sold individually or as a complete set of 12
- Oversized options – available individually in +0.001" and +0.003" sizes
Technical Specifications – GSC3058
| Specification | Inches | Millimeters |
|---|---|---|
| Total Length | 1.450" | 36.83mm |
| Outer Diameter | 0.4157" | 10.56mm |
| Valve Stem Diameter | — | 6mm |
Designed for precision and longevity, this standard intake guide set is a trusted upgrade for Porsche Turbo valvetrain systems.
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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