YANMAR.EY18ALW.18 Part No. 18 VALVES Exhaust,
YANMAR.EY18ALW.17 Part No. 17 VALVES Suction
YANMAR.EY18ALW.4 Part No. 4 SEAT, Intake Valve
YANMAR.EY18ALW.5 Part No. 5 SEAT Valve