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The Supertech Black Nitrided exhaust valve for Subaru EZ30D engines is a coated replacement valve aimed at improving durability on the exhaust side. The black nitriding treatment enhances surface hardness and reduces wear where the valve contacts the guide and seat under exhaust temperatures. Supplied as a single valve, it provides a direct replacement option for EZ30D applications requiring an OE-style exhaust valve.
Supertech Subaru EZ30D Black Nitrided Exhaust Valve - Single (Drop Ship Only)
