OTTO Excavator Spare Parts Zx230 6Bg1T Thermostat Seat 8972248640 897224-8640 8-97224864-0 For Isuzu This OTTO Excavator Spare Part, the Zx230 6Bg1T Thermostat Seat with part number 8972248640, is designed to regulate and maintain the optimal operating temperature for Isuzu engines.