Supertech Subaru EJ20/EJ25 Sodium Filled Inconel Exhaust Valve - Set of 8

Supertech is a well-known name for performance engine components, and they've put that expertise into this set of eight sodium-filled Inconel exhaust valves for Subaru EJ20 and EJ25 engines. If you're rebuilding the top end of your Subaru, especially for boosted applications or high-performance builds, these valves are designed to handle the extra heat and stress.

What makes these valves stand out is their construction. They use Inconel, a superalloy that's incredibly resistant to high temperatures and corrosion – much more so than standard stainless steel. This is crucial for exhaust valves, which are constantly exposed to the hottest gases coming out of your engine. The sodium filling is another key feature. Inside the valve stem, there's a small amount of sodium that melts and circulates as the engine runs. This sodium acts like a heat pipe, drawing heat away from the valve face and into the cooler stem, helping to keep the valve temperature down. This improved heat management is vital for preventing valve seat recession and ensuring consistent performance under demanding conditions.

This set includes eight valves, enough for a complete engine. When you're working on a performance Subaru engine, using components built to withstand extreme conditions like these Supertech valves can make a significant difference in reliability and longevity. Make sure to consult your engine's service manual for proper installation procedures and any specific requirements for sodium-filled valves.