This Supertech exhaust valve is specified for the Subaru EG33 H6 24V engine and is a single black-nitrided Inconel exhaust valve. The listing identifies valve construction and finish as black nitrided Inconel for the stated EG33 H6 24-valve application. It is offered as a single valve unit for engine builders replacing or upgrading individual exhaust valves on the specified Subaru engine.
Supertech Subaru EG33 H6 24V Black Nitrided Inconel Exhaust Valve - Single (Drop Ship Only)