OTTO Excavator Parts Ftr34 6Hk1 Thermostat Shell 8976020470 897602-0470 8-97602047-0 For Isuzu The OTTO Excavator Parts Ftr34 6Hk1 Thermostat Shell with part number 8976020470 is a component designed for Isuzu engines, serving as the housing for the thermostat to regulate engine temperature efficiently.