OTTO Excavator Spare Parts Zx330-3 6Hk1 Thermostat 8980904640 898090-4640 8-98090464-0 For Isuzu This OTTO Excavator Spare Part, the Zx330-3 6Hk1 Thermostat with part number 8980904640, is tailored for Isuzu engines. It is crucial for maintaining the engine temperature, ensuring efficient and reliable performance in your Isuzu-powered equipment.