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The Supertech black-nitrided intake valve for Subaru EJ25 engines is offered in a +1mm oversize as a single valve, providing a larger-diameter intake option for service or head machining scenarios. The black nitriding treatment increases surface hardness and reduces wear at the valve guide and seat interface. It serves as a straightforward intake-side replacement matched to EJ25 specifications.
Supertech Subaru EJ25 Black Nitrided Intake Valve - +1mm Oversize - Single
