Supertech Audi/VW 1.8T 5V Sodium Filled Inconel Exhaust Valve - Set of 8

Supertech is well-known for making high-performance internal engine components, and this set of eight sodium-filled Inconel exhaust valves is a prime example of their work for Audi and VW 1.8T 5V engines. If you're rebuilding or upgrading the top end of your 1.8T, these valves are designed to handle the heat and stress that come with increased performance or demanding driving conditions.

These exhaust valves are constructed from Inconel, a high-nickel, high-chromium superalloy that's exceptionally resistant to high temperatures and corrosion. This makes them ideal for the exhaust side of the engine, where temperatures can soar. The sodium filling inside the valve stem is a clever feature; as the valve operates, the sodium melts and moves within the stem, absorbing heat from the valve head and transferring it to the valve guide. This process significantly improves heat dissipation, helping to keep the valve temperatures in check and reducing the risk of valve seat recession or other heat-related failures, especially in high-performance applications.

This set includes all eight exhaust valves needed for a complete engine build. When installing these, it's important to ensure your valve guides are in good condition and properly sized for the sodium-filled stems, as they are designed for a specific fit. Refer to the manufacturer's installation instructions for detailed guidance on proper fitment and any specific requirements for these advanced valves.