Supertech black-nitrided exhaust valve set for Subaru EJ20/EJ25 engines, supplied +0.5mm oversize and sold as a set of 8. The black nitride finish provides a treated surface while the modest oversize accommodates seat work or machining. These valves are presented as replacements when a +0.5mm exhaust valve is specified for EJ-series head servicing.
Supertech Subaru EJ20/EJ25 Black Nitrided Exhaust Valve - +0.5mm Oversize - Set of 8