Features: 1, Replacement for Mr Heater MH9B(2001-2008), MH9BX (2009-current), compatible with Heat Star and Enerco MH9B & MH9BX Buddy Heaters. 2, F273401, 73404. Compatible for small propane heater. 3, It is made of high quality material, sturdy, hard, not easy to rust and deform, it can perfect replace your original pilot assembly. 4, Before replacing the Pilot Burner Assembly, it is necessary to ensure that proactive measures are taken to cut off the gas supply. Package list: 1 x F273401 73404 Pilot Assembly Replacement Brand Unbranded MPN Does Not Apply UPC Does Not Apply Feature ESCP Type F273401 73404 Pilot Assembly Replacement .