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Parts List: A.O. Smith GB-400, GW-400; Series 300, 301, 302, 303

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  • Part numbers that are no longer active in the AO Smith database are not included on the chart. In addition, some part numbers have changed to a new part number. Please see AO Smith New Part Cross Reference / Discontinued Part Guidelines for further assistance.
  • You can download and print the original PDF of the A.O. Smith parts list at the bottom of the page.

 

Item Description GB/GW-400
Series 300/301/302/303
10 Panel - Right Combustion 211914 (new # 100063550)
13A Burner Assembly 211941 (new # 100111824)
14 Insert - Side Jacket (qty. 2) 212029 (new # 100063722)
15 User Interface Module 211762 (new # 100111940)
16 Combustion Insert - Left 211853 (new # 100063379)
17 Combustion Insert - Right 211853-1 (new # 100063380)
19 Flame Sensor 192682 (new # 100109908)
20 Ignitor 212005 (new # 100111087)
22 Gasket - Ignitor 210078 (new # 100110748)
29 Panel - Top Combustion 211862-1 (new # 100063411)
31 Transformer 210449 (new # 100111982)
32 Blower / Shutter Assembly 210884-1 (new # 100111836)
33 Gasket 192780 (new # 100050950)
34 Gasket - Vent (qty. 6) 212469-1 (new # 100064152)
37 Jacket - Right Side Panel 211881 (new # 100063465)
42 Gasket - Sight Glass (qty. 2) 211866 (new # 100063422)
43 Plate - Sight Glass (qty. 2) 210166 (new # 100110682)
46 Flow Switch Conduit Assembly 210179-6 (new # 100060721)
47 Inlet Temp. Conduit Assembly 210180 (new # 100110731)
48 ECO/Outlet Temp. Conduit Assembly 210181 (new # 100110727)
49 Switch - Rocker 191665 (new # 100109882)
50 Junction Box 93558 (new # 100110255)
52 Plate - Intake (qty. 2) 212471 (new # 100064169)
55 Port - Observation (qty. 2) 191572-1 (new # 100049890)
56 Gasket - Port (qty. 2) 191576-1 (new # 100049896)
60 Flow Switch 211480 (new # 100110588)
61 Gasket - Gas Manifold Plate (qty. 2) 211930 (new # 100063566)
63 Nipple - Pipe 1-1/2 in. x Close (Brass) 091863-7 (new # 100029440)
65 Nipple - Pipe 3/4 in. x 3 in. (Brass) 20373-2 (new # 100006024)
65 Nipple - Pipe 3/4 in. x 3 in. (Galv.) 200645 (new # 100110312)
66 Nipple - Pipe 3/4 in. x Close (Galv.) (qty. 2) 200645 (new # 100110312)
67 Elbow - 3/4 in. 90 (Brass) (qty. 2) 191664 (new # 100049989)
69 Pressure Relief Valve (GB only) 210451 (new # 100111921)
70 Strain Relief Fitting 210173 (new # 100060707)
73 Flame Control Board 211759 (new # 100111256)
75 Power Distribution Board 211760 (new # 100111904)
78 Blocked Outlet Pressure Switch 210908 (new # 100110973)
80 Central Control Board 211758 (new # 100111255)
81 Gas Valve - Propane 192454-1 (new # 100109958) (qty. 2)
84 Feed Header - Bronze 192767-1 (new # 100050926)
85 Return Header - Bronze 192766-1 (new # 100050923)
90 Standard Pump - Bronze (GW Models) 200638 (new # 100059169)
90 Standard Pump - Cast Iron (GW Models) 200638 (new # 100059169)
92 Tank Pressure Kit (GW Models) 210324 (new # 100109985)
93 Burner Gasket 210476 (new # 100110705) (qty. 8)
97 Fuse - 7.5 AMP (On Central Control Board) 211943 (new # 100063635)
98 Orifice - Natural Gas 210880-91 (new # 100110726) (qty. 8)
98 Orifice - Propane 2210880-48 (new # 100061661) (qty. 8)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

 

 

 

Flame Control Board:

Item Description GW-400 or GB-400
109 Communication Harness Assembly - CCB J20 & J21 (qty. 2) 211953-1 (new # 100063642)
120 Harness - Tank Probe - CCB J9 211989 (new # 100063654)
123 Harness - 24 VAC Output CCB J4 (LWCO/LO Gas Hi Gas / IRI/ALARM) 211951 (new # 100063640)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Download original AO Smith Parts List
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