Description
Optimize your Porsche GT3 Cup engine with the GSC Power Division Part Number 3997.001-1 intake and exhaust valve guide, designed specifically for 996 and 997 models. Crafted to meet OEM standards, this valve guide ensures precise fit and reliable performance under demanding racing conditions. Its standard style design with an additional +.001 inch outer diameter provides an optimal balance of durability and smooth valve operation.
Constructed with high-quality materials, this valve guide features a robust construction to withstand high temperatures and aggressive engine cycles. Suitable for both intake and exhaust applications, it offers consistent guidance for the valve stem, promoting proper sealing and efficient engine breathing. This component is ideal for racing enthusiasts and professional mechanics seeking to maintain or enhance the engine’s performance without compromising on quality.
Easy to install and compatible with Porsche 996 and 997 models, this guide is a reliable choice for engine rebuilds and upgrades. It complies with Prop 65 standards, ensuring safety and environmental responsibility. Whether you’re restoring a vintage racer or aiming to improve your current setup, the GSC P-D Valve Guide provides the durability and precision necessary for high-performance driving.
Features:
- Designed specifically for Porsche GT3 Cup 996 and 997 models
- Standard style valve guide with +.001 inch OD for optimal fit
- Suitable for both intake and exhaust valve applications
- High-quality construction for durability under high temperatures
- Easy to install, ideal for engine rebuilds and performance upgrades
- Meets Prop 65 safety standards for environmental compliance


















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