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Supertech black-nitrided intake valves for the Mazda Miata 1.6L are supplied as a set of eight for intake-side replacement. The black-nitrided finish is noted in the product description; the eight-piece quantity supports full-bank or full-engine valve replacement on compatible 1.6L Miata engines when replacing intake valves in matched groups.
Supertech Mazda Miata 1.6L Black Nitrided Intake Valve - Set of 8
