The Supertech intake valve set for Mazda Miata 1.8L includes eight black-nitrided intake valves in +1mm oversize, sold as a set of eight. Specified for the 1.8L Miata application, these oversize intake valves suit engines that have undergone valve seat work and require matched intake valving for proper fit and operation in the cylinder head.
Supertech Mazda Miata 1.8L Black Nitrided Intake Valve - +1mm Oversize - Set of 8