The Vulcan Hart 00-412788-00048 thermocouple is a 48-inch replacement component identified as T46 for compatible commercial cooking equipment. A thermocouple detects pilot flame heat and the gas safety system respond to the presence of a flame. It plays an important role in supporting safe equipment operation and may require replacement if the existing component becomes worn or faulty. https://partsfe.com/thermocouple48-for-vulcan-part-00-412788-00048/1-00-412788-00048.html