Please be wared that the thermopile we provide is with 25 inches leads. which meet most applications of fryers and deep fryers but not for all the applications. If you would like to apply this assembly parts to fireplaces, you may need longer leads thermopile, such as 36 inches. The pilot assembly kit includes 3-way flame hood, 750mv thermopile with lead, orifice and bracket. We are using genuine Q313A 750mv universal thermopile generators with 25 inches leads, which can reach more than 8,000 hours working hours. Gas tube size is 1/4", hood width is 1-1/2". Pre-installed orifice, #26-1555,0.10. Replacing the part numbers of the following: 1830-491, 6ch14-10, 66704, 51-1467, 00-412212-1, 112212-1, 112212-2, 412212-1, 412212-2, F179A, F180A, F180 Compatible part numbers of Cecilware fyrer model series FMP30, 40B, 403, 65, FMS30, 54 Compatible part numbers of Imperial fyer model series IF, IHR,IR Compatible part numbers of Vulcan Hart Fryer model series GF(91G, 92G), HF91G, HF92G(Old 7891G & 7892G), TK-35, 7400, 7500, 7800, 1GR45M, 1GR65M, 1GR85M, 1GRC35, 1GRC45, 1GRC65, 1GRD45, 1GRD65, 1GRS35, 1GRS45, 1GRS65, EF3, EF4, EF5, GR35, GR35F, GR45, GR45F, GR65, GR65F, GR85, GR85F, GRC35F, GRC45F, GRC65F, GRC85F, GRD35F, GRD45F, GRD65F, GRD85F, GRS35F, GRS45F, GRS65F, GRS85F Compatible part numbers of Tri-Star Fryer model series Compatible part numbers of Wolf Fryer WTF-35