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This Supertech +1mm oversize black-nitrided exhaust valve set is specified for the Mazda Miata 1.8L and sold as eight valves. The oversize dimension supports heads that have been machined or require larger valves during service. The black-nitrided finish and eight-piece quantity make this set suitable for complete exhaust valve replacement on compatible 1.8L Miata engines.
Supertech Mazda Miata 1.8L Black Nitrided Exhaust Valve - +1mm Oversize - Set of 8
