The Supertech black-nitrided exhaust valve set for Honda K20 and F20C1/F22C1 applications is offered as a +1mm oversize set of eight. The listing specifies the black nitrided finish and the +1mm oversize for these engine codes. Material finish, oversize and the multiple engine applications are provided to help confirm compatibility during head service.
Supertech Honda K20 / F20C1/F22C1 Black Nitrided Exhaust Valve - +1mm Oversize - Set of 8