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Supertech black-nitrided Inconel exhaust valve set for non-turbo Subaru EJ25 SOHC engines, supplied +1mm oversize and sold as a set of 8. The combination of Inconel alloy and a nitrided surface treatment provides a treated head and stem for higher-temperature exhaust conditions, intended for SOHC EJ25 head service where +1mm oversize exhaust valves are required after machining.
Supertech Subaru EJ25 Non Turbo SOHC Inconel Exhaust Valve - +1mm Oversize - Set of 8
