OTTO Excavator Spare Parts Zx200 6Bg1T Thermostat Seat Connector 5137210340 513721-0340 5-13721034-0 For Isuzu This OTTO Excavator Spare Part, the Zx200 6Bg1T Thermostat Seat Connector with part number 5137210340, is essential for maintaining the Isuzu engine's optimal operating temperature efficiently.