OTTO Excavator Parts Zx330 6Hk1 Thermostat Shell 8943905200 894390-5200 8-94390520-0 For Isuzu This product is a thermostat shell designed for the Isuzu engine model Zx330 6Hk1 in OTTO excavator parts, with part numbers 8943905200, 894390-5200, and 8-94390520-0. It helps maintain and regulate the optimal operating temperature of the engine, ensuring efficient performance.