OTTO Excavator Parts Zx330 6Hk1 Thermostat Tube 1137118060 113711-8060 1-13711806-0 For Isuzu The OTTO Excavator Parts Zx330 6Hk1 Thermostat Tube, with part number 1137118060, is designed for Isuzu engines. It facilitates the proper flow of coolant, contributing to the efficient temperature regulation of the engine.