Replacement thermocouples, pilot assemblies, and hot surface ignitorsitems are lp/ng except where noted. 5au59 is 1/4in -dia. Aluminum tubing; includes compression nut, ball sleeves, and breakaway ferrule. 2e446 has 36in armored cable leads with split-spade terminals. Includes mounting nut, spring clips, and pg9 adapter sleeve. 2ewf9 and 2ewf8 have low-mass, quick-dropout thermocouples.