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The Supertech black-nitrided exhaust valve for Honda K20, K24, F20C1 and F22C1 engines is a +0.5mm oversize single replacement supplied individually. The part listing specifies both the nitrided finish and +0.5mm oversize size; it is intended to replace an exhaust valve on the listed engine applications where the slightly larger valve is needed.
Supertech Honda K20/K24/F20C1/F22C1 Black Nitrided Exhaust Valve - +0.5mm OS - Single (D/S Only)
