OTTO Excavator Spare Parts Fvr34 6Hk1 Thermostat Seat Connector 8943973380 894397-3380 8-94397338-0 For Isuzu This OTTO Excavator Spare Part, the Fvr34 6Hk1 Thermostat Seat Connector with part number 8943973380, is essential for managing and regulating the Isuzu engine's optimal operating temperature.