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The Supertech black-nitrided exhaust valve for Honda and Acura K20 and F20 engines is a +1.0mm oversize single replacement supplied individually. The description lists the nitrided finish and +1mm oversize specification; this valve is intended for exhaust-side replacement when a larger valve size is required for the stated K20/F20 applications.
Supertech Honda/Acura K20/F20 Black Nitrided Exhaust Valve - +1mm Oversize - Single (Drop Ship Only)
