DescriptionGSC Power-Division Standard Exhaust Valve Guide for Mitsubishi 4G63T, stopper styleStandard sized sold as set of 8 or individuallyOversized sold individually as 0.001″ and 0.003″GSC3003Standard (in/mm)Total Length1.950 / 49.53Outer Diameter0.4750 / 12.07Valve Stem Diameter6.6mm