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This Supertech Inconel exhaust valve set is specified for the Mazda Miata 1.8L in a +1mm oversize configuration and includes eight valves. The oversize dimension is provided for applications requiring seat regrind or larger-stem valves during engine service. Sold in an eight-piece pack, it supports complete valve replacement where +1mm exhaust valve sizing matches the cylinder head service requirements.
Supertech Mazda Miata 1.8L Inconel Exhaust Valve - +1mm Oversize - Set of 8
