OTTO Excavator Parts Zx55Ur 4Le2 Thermostat Shell 8972584790 897258-4790 8-97258479-0 For Isuzu The OTTO Excavator Parts Zx55Ur 4Le2 Thermostat Shell 8972584790 is a component designed for Isuzu engines. It helps maintain and regulate the optimal operating temperature for efficient engine performance.