DescriptionGSC Power-Division Intake Valve Guide for Subaru EJ20/25 Series (EJ205, EJ207, EJ255, EJ257, EJ257B), stopper styleStandard sized sold individuallyOversized sold individually as 0.001″ and 0.003″GSC3026Standard (in/mm)Total Length1.560 / 39.62Outer Diameter0.4357 / 11.07Valve Stem Diameter6mm