GSC Exhaust Valve Guide for Porsche 996 / 997 Turbo 911 – GSC3057
The GSC3057 Exhaust Valve Guide is precision-engineered for Porsche 996 and 997 Turbo 911 applications. Crafted by GSC Power Division, this guide ensures reliable valve control and long-term durability under high-performance conditions.
Available Sizing Options
- Standard size – sold individually or in sets of 12
- Oversized options – available individually in +0.001" and +0.003" increments
Technical Specifications – GSC3057
| Specification | Inches | Millimeters |
|---|---|---|
| Total Length | 1.690" | 42.93mm |
| Outer Diameter | 0.4157" | 10.56mm |
| Valve Stem Diameter | — | 6mm |
Upgrade your Porsche’s valvetrain with GSC’s high-quality exhaust valve guides—built for precision and performance.
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)
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
