Top Quality Aftermarket Part for 812-4470 - Meets or exceeds all OEM Standards
The Thermocouple Ceramic Cover is the protection tube that goes over the thermocouple. It MUST be in place or the thermocouple will burn itself out in short time.
The Thermocouple is the device that monitors the fire after start-up. Once it reaches temperature the thermocouple allows the stove to start feeding on it's own in normal operation mode. If your stove goes out after the initial start-up cycle, more than likely the thermocouple needs to be inspected or replaced.