OTTO Excavator Spare Parts Fvr34 6Hk1 Thermostat 8976023930 897602-3930 8-97602393-0 For Isuzu This OTTO Excavator Spare Part, Fvr34 6Hk1 Thermostat with part number 8976023930, is specially designed for Isuzu engines. It regulates the engine temperature effectively, ensuring optimal performance and longevity for your.