So this Brlyeeanze ODS pilot assembly is exactly what you need for your DESA vent-free gas wall heater. It's that 120630-01 model made from heavy-duty stainless steel that can take the heat and won't rust on you. The wire is 33 inches long with dual wires (silver and brown) - plenty of length to work with. This thing replaces a bunch of other part numbers too: 503329, 098244-01, 098244-03, 099440-01, 099440-05, 107667-01, 110803-01, and j5526. Works with DESA Glo-Warm natural gas and propane heaters, plus other brands like Vanguard, Comfort Flame, Cozy Heat, Kozy World, and Pro Com. Super important safety note though - always turn off and unplug your heater before working on it, and check for gas leaks after installing any gas parts. Seriously, get a pro to install it if you're not 100% confident. The company stands behind it too - if there's any issue, they'll replace it free. Good to have a reliable pilot assembly when your heater's acting up, especially before winter hits.