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The Supertech Inconel exhaust valve for Mazda Miata 1.8L applications is a +1mm oversize single exhaust valve intended for head rebuilds and valve service. The oversize dimension restores seat contact after machining; Inconel material is specified for exhaust duty. Sold individually—verify fitment before ordering. Please confirm fitment.
Supertech Mazda Miata 1.8L Inconel Exhaust Valve - +1mm Oversize - Single
