OTTO Excavator Parts Cxz2003 6Wf1 1137700890 113770-0890 1-13770089-0 Thermostat For Isuzu This OTTO Excavator Parts Thermostat is designed for Isuzu engines, specifically for the Cxz2003 model with the 6Wf1 engine. It is essential for regulating the engine temperature effectively.