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Supertech black-nitrided intake valve set for BMW N54 is supplied as 12 intake valves with a nitrided finish and the listing advises use with locks KPR-5.0 / 7S. The description indicates intended compatibility with N54 valvetrains and the guidance on locks provides a clear assembly note within the source material.
Supertech BMW N54 Black Nitrided Intake Valve - Set of 12 (Use w/Locks KPR-5.0 / 7S)
