Lochinvar® 100165831 Piezo Igniter, For Use With: Model LT(N/L)030G, LS(N/L)030, LT(N/L)040G, LT(N/L)040G-4, LT(N/L)041G, LS(N/L)041G, LT(N/L)050G, LT(N/L)050G-4, LT(N/L)051G, XD(N/L)050G Residential Gas Flammable Vapor Ignition Resistant Water Heater