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The Supertech black-nitrided intake valve for BMW S38 applications is supplied as a set of twelve. The black nitrided surface treatment is used to improve surface hardness and wear characteristics for intake service, and the matched set format helps maintain consistent valve geometry and sealing when replacing multiple intake valves during cylinder head servicing or engine rebuilding.
Supertech BMW S38 Black Nitrided Intake Valve - Set of 12
