Ensure the safe operation of your propane gas logs with this 18-inch thermocouple assembly. Specifically designed for vented propane (LP) gas logs, this assembly is a crucial safety component, preventing gas flow unless a pilot light is successfully ignited. The thermocouple generates millivolts when heated by the pilot light; this signal opens the gas valve, allowing gas to flow to your fireplace or fire feature. This assembly includes an 18-inch lead length for flexible installation. This kit is compatible with vented log sets only; it will not function with ventless or vent-free logs. Proper functioning of this component is essential for safe operation and is a vital replacement part for maintaining your outdoor fire pit, indoor gas fireplace, or vented gas log set. The assembly is crafted for durability and reliable performance, providing peace of mind. Check your gas type before purchasing; this assembly is for propane (LP) gas systems only. The assembly monitors pilot light presence, ensuring gas flow only with a stable flame. Replacement is recommended if you experience difficulty keeping your gas logs lit or suspect a faulty safety system. Maintaining a properly functioning thermocouple is vital for preventing gas leaks and ensuring the safety of your home and family. This replacement part helps maintain the consistent operation of your gas log set.