A.O. Smith replacement parts

274 part numbers. Each page lists every model the part fits.

By function

• Burner & ignition — 66 parts
• Blower & venting — 43 parts
• Valves — 38 parts
• Anode rod — 24 parts
• Other components — 19 parts
• Doors, jacket & panels — 18 parts
• Fittings & plumbing — 16 parts
• Thermostat & controls — 16 parts
• Dip tube & heat traps — 15 parts
• Wiring & harnesses — 6 parts
• Fasteners & brackets — 5 parts
• Heating element — 5 parts
• Gaskets, seals & insulation — 3 parts

All part numbers

• 0001804500 — Venting Manual Reset Switch (1 model)
• 0002400720 — Access Door Clips (1 model)
• 0002400801 — Jacket/Access Door Clips (1 model)
• 0003901050 — Inner Door (1 model)
• 0004800990 — a. Flue Baffle (1 model)
• 0005300370 — Element Gasket (9 models)
• 0005300820 — b. Adaptor Gasket (1 model)
• 0005301040 — Blower Gasket (1 model)
• 0005301100 — Flue Adaptor Gasket 6" x 10.102" (1 model)
• 0006600690 — 90-deg. ABS Sch. 40 Elbow (1 model)
• 0008400870 — 5' ABS Schedule 40 Vent Pipe (1 model)
• 0010100190 — Gasket -Wiring (1 model)
• 0012400550 — Blower (1 model)
• 0015123490 — Right Access Door w/Gasket (1 model)
• 0015123500 — Left Access Door w/Gasket (1 model)
• 0015153390 — Vent Blower Adaptor (1 model)
• 0015154260 — Flue Baffle Assembly (1 model)
• 0015154270 — Vent Hood Assembly (1 model)
• 024286-021 — Upper Element (1 model)
• 026273-004 — Drain Valve (5 models)
• 026273-007 — Drain Valve (9 models)
• 034894-000 — Ring, Flue Restrictor (1 model)
• 035405-000 — Flue Restrictor (1 model)
• 042285-025 — Lower Element (5 models)
• 042286-021 — Upper Element (8 models)
• 042286-022 — Lower Element (4 models)
• 043151-000 — T&P Valve (9 models)
• 043151-004 — T&P Relief Valve (5 models)
• 100108455 — T & P Valve (1 model)
• 100108660 — Magnesium Anode (1 model)
• 100109299 — Outer Door (1 model)
• 100109433 — 2" x 3/4" NPT Nipple (1 model)
• 100109594 — Aluminum Anode (1 model)
• 100109620 — Magnesium Anode - Outlet (1 model)
• 100109736 — Aluminum Anode - Outlet (1 model)
• 100110614 — Wiring Harness (1 model)
• 100110786 — Plastic Top (1 model)
• 100111395 — Blower Assembly (Standard) (1 model)
• 100111397 — Switch and Harness Assembly (Standard) (1 model)
• 100228669 — Sound Suppressor, 2" (1 model)
• 100228670 — Sound Suppressor, 3" (1 model)
• 100263912 — Drain Valve (1 model)
• 100283608 — Intellivent Control (1 model)
• 100283610 — Inlet Tube (1 model)
• 100283643 — Temperature Probe (1 model)
• 181206-001 — Dirt Leg Assembly (1 model)
• 181260-000 — Access Panel (9 models)
• 181345-000 — Power Cord (1 model)
• 181507-027 — Orifice Natural Standard (1 model)
• 181507-029 — Orifice Natural High Altitude (1 model)
• 181508-026 — Orifice, Main Burner with Door Gasket - Natural (1 model)
• 181508-027 — Burner Orifice with Door Insulation - Natural Gas (1 model)
• 181508-031 — Burner Orifice with Door Insulation - Natural Gas (2 models)
• 181557-000 — Adaptor, Flue Mounting (2 models)
• 181639-003 — Pipe Insulation (13 models)
• 181662-000 — Vent Terminal Screen 3" (1 model)
• 181791-042 — Orifice, Main Burner with Door Gasket - Propane (1 model)
• 181791-043 — Orifice Propane Standard (1 model)
• 181791-044 — Orifice Propane High Altitude (2 models)
• 181791-046 — Burner Orifice with Door Insulation - Propane Gas (1 model)
• 181791-048 — Burner Orifice with Door Insulation - Propane Gas (1 model)
• 182117-001 — Terminal Cover (9 models)
• 182220-000 — Burner Head with Door Insulation - Propane Gas (1 model)
• 182354-000 — Upper Thermostat w/High Limit (9 models)
• 182359-000 — Lower Thermostat (9 models)
• 182360-000 — Terminal Cover w/High Limit (9 models)
• 182787-000 — Wall Plate, 2" (1 model)
• 182791-004 — Gas Control Valve - Natural Gas (1 model)
• 182791-005 — Gas Control Valve - Natural Gas (2 models)
• 182792-000 — Gas Control Valve - Propane Gas (1 model)
• 182792-001 — Gas Control Valve - Propane Gas (2 models)
• 183006-000 — Vent Terminal Assembly 2" (1 model)
• 183159-000 — Air Intake Screen (4 models)
• 183162-000 — Inner Door Gasket (4 models)
• 183163-002 — Burner Tube with Rubber Boot, Door Insul. - Natural Gas (1 model)
• 183163-003 — Burner Tube with Rubber Boot, Door Insul. - Natural Gas (1 model)
• 183220-000 — Burner Head with Door Insulation - Propane Gas (3 models)
• 183222-006 — Burner Assembly - Natural Gas (1 model)
• 183222-007 — Burner Assembly - Propane Gas (1 model)
• 183222-008 — Burner Assembly - Natural Gas (1 model)
• 183222-009 — Burner Assembly - Propane Gas (1 model)
• 183222-046 — Burner Assembly - Natural Gas (1 model)
• 183222-047 — Burner Assembly - Propane Gas (1 model)
• 183256-000 — T&P Insulation (13 models)
• 183380-004 — Limit Switch (1 model)
• 183425-000 — Inner Door with Door Insulation (3 models)
• 183425-001 — Inner Door with Door Insulation (1 model)
• 183450-002 — Burner Tube with Rubber Boot, Door Insul. - Propane Gas (1 model)
• 183450-003 — Burner Tube with Rubber Boot, Door Insul. - Propane Gas (1 model)
• 183458-000 — Outer Door (4 models)
• 183463-032 — Anode, Magnesium (4 models)
• 183463-039 — Primary Anode Rod (10 yr Mag.) (2 models)
• 183463-050 — Primary Anode Rod (10 yr Mag.) (2 models)
• 183506-001 — Wire Harness (1 model)
• 183509-004 — Envelope with Parts (1 model)
• 183523-019 — Primary Anode Rod (1 model)
• 183523-026 — Primary Anode Rod (4 models)
• 183523-029 — Primary Anode Rod (5 models)
• 183523-033 — Anode, Aluminum (6 models)
• 183523-036 — Anode Rod - XCVT/XCVX Only (1 model)
• 183523-039 — Anode Rod - XCVT/XCVX Only (1 model)
• 183523-042 — Anode Rod - XCVT/XCVX Only (1 model)
• 183545-001 — Hose Clamp - 4" (1 model)
• 183582-000 — Flue Baffle Assembly (1 model)
• 183583-000 — Burner Head with Door Insulation - Natural Gas (4 models)
• 183766-029 — Inlet Tube, Diffuser (1 model)
• 183776-026 — Inlet Tube Assembly (1 model)
• 183776-036 — Inlet Tube Assembly (2 models)
• 183798-000 — Piezo Igniter Assembly (3 models)
• 183824-182 — Pilot Assembly with Grommet & Door Insul.- - Propane Gas (1 model)
• 183824-190 — Pilot Assembly with Grommet & Door Insul. - Natural Gas (1 model)
• 183824-192 — Pilot Assembly with Grommet & Door Insul.- - Propane Gas (1 model)
• 183824-200 — Pilot Assembly with Grommet & Door Insul. - Natural Gas (2 models)
• 183824-202 — Pilot Assembly with Grommet & Door Insul.- - Propane Gas (1 model)
• 183853-000 — Draft Hood (3 models)
• 183900-024 — Dip Tube (1 model)
• 183900-040 — Dip Tube (2 models)
• 183900-046 — Dip Tube (3 models)
• 183900-052 — Dip Tube (6 models)
• 183901-032 — Inlet Tube, Turbo (1 model)
• 183901-033 — Dip Tube Circ. Loop "Q" Model (1 model)
• 184011-000 — Inlet Tube Spacer (11 models)
• 184015-009 — Flue Baffle Assembly (1 model)
• 184015-012 — Flue Baffle Assembly (1 model)
• 184047-000 — Hot Surface Ignition Assembly (1 model)
• 184104-001 — Burner Tube with Rubber Boot, Door Insul. - Natural Gas (1 model)
• 184105-001 — Burner Tube with Rubber Boot, Door Insul. - Propane Gas (1 model)
• 184165-002 — Instruction Manual (3 models)
• 184280-000 — Flue Restrictor (2 models)
• 184289-000 — Wiring Harness (1 model)
• 184316-000 — Pressure Switch (Air) Cover (1 model)
• 184322-001 — Manifold Natural Gas (1 model)
• 184325-001 — Manifold Propane Gas (1 model)
• 184351-000 — Burner Assembly Propane Gas (1 model)
• 184353-000 — On/Off Switch (1 model)
• 184355-000 — Pressure Switch (Air) (1 model)
• 184470-000 — Viewport Assembly (4 models)
• 184608-000 — Thermostat Bracket (9 models)
• 184633-001 — Nipple w/Heat Traps (2 models)
• 184633-002 — 34.** . 3" Heat Trap Nipple (3 models)
• 184634-114 — Secondary Anode with Heat Trap (optional) - XCVT/XCVX Only (3 models)
• 184634-142 — Secondary Anode with Heat Trap (optional) - GCVT/GCVX Only (3 models)
• 184639-000 — Instruction Manual (5 models)
• 184639-001 — Instruction Manual (4 models)
• 184659-000 — Junction Box Bracket w/CDT Hole (9 models)
• 184660-000 — Junction Box Cover (9 models)
• 184715-000 — Nipples - 5" (1 model)
• 184715-001 — Nipple w/Heat Traps (3 models)
• 184768-004 — Gas Thermostat Natural Gas (1 model)
• 184768-005 — Gas Thermostat Propane Gas (1 model)
• 184792-002 — Nipple w/Heat Traps (1 model)
• 184792-003 — Heat Trap Assembly (3 models)
• 184923-000 — Igniter Assy, Hot Surface with Door Gasket (1 model)
• 184931-005 — Burner Tube Assy with Door Gasket - Natural (1 model)
• 184932-007 — Burner Tube Assy with Door Gasket - Propane (1 model)
• 184952-000 — FV Sensor (1 model)
• 184956-000 — Blower Assembly Gasket (1 model)
• 184960-002 — Combination Gas Valve - Natural (1 model)
• 184960-003 — Combination Gas Valve - Propane (1 model)
• 184977-216 — 35.** . Outlet Anode w/3" HT Nipple (1 model)
• 185110-005 — Pressure Switch (1 model)
• 185136-000 — Baffle, Flue (1 model)
• 185193-006 — Burner Assembly - Natural Gas (1 model)
• 185194-006 — Burner Assembly - Propane Gas (1 model)
• 185215-000 — Adaptor, Exhaust (1 model)
• 185264-000 — Mounting Bracket (1 model)
• 185287-000 — Instruction Tag - 3" Screens (1 model)
• 185287-001 — Instruction Tag - 4" Screens (1 model)
• 185308-000 — Instruction Sheet - 3" & 4" Screens (1 model)
• 185310-000 — FV Sensor Bracket (1 model)
• 185331-000 — Blower Assembly (1 model)
• 185403-000 — Wall Plate, 4" (1 model)
• 185424-000 — Thermostat Shield (optional) (1 model)
• 191259-001 — Thermostat Shield (Optional) (3 models)
• 192815-000 — Vent Cap w/Screen (1 model)
• 194549-000 — Burner Assembly Natural Gas (1 model)
• 196057-000 — c. Top Adaptor (1 model)
• 196070-000 — Vent Terminal Screen 4" (1 model)
• 23912-A — 20" Dia. Aluminum Drain Pan with Side Drain (optional) (3 models)
• 23913-A — 22" Dia. Aluminum Drain Pan with Side Drain (optional) (3 models)
• 23914-A — 28" Dia. Aluminum Drain Pan with Side Drain (optional) (3 models)
• 37068 — Southeast Parkway, Franklin, TN (3 models)
• 700795-018 — Outer Door (5 models)
• 700795-020 — Drafthood (5 models)
• 700795-021 — Reducer Ring - Some Models ------------ (4 models)
• 9000029 — Anode, Aluminum - 6 Year (2 models)
• 9000056015 — Thermocouple (5 models)
• 9000071 — Valve, T&P Relief (2 models)
• 9000728 — Valve, T&P Relief (2 models)
• 9000728015 — Temperature & Pressure Relief Valve (Located Top Or Side) (5 models)
• 9001453005 — Anode AL (3 models)
• 9001583005 — T&P Relief Valve (4 models)
• 9001829005 — Anode MG (4 models)
• 9001870 — Valve, Drain - Brass (2 models)
• 9001870015 — Drain Valve Brass (5 models)
• 9002067 — Turbo Inlet Tube with Spacer (2 models)
• 9002457 — Diffuser Inlet Tube with Spacer (1 model)
• 9002547 — Diffuser Inlet Tube with Spacer (2 models)
• 9002842 — 20" Dia. Plastic Drain Pan w/Side Drain (10 models)
• 9002843 — 22" Dia. Plastic Drain Pan w/Side Drain (10 models)
• 9002844 — 24" Dia. Plastic Drain Pan w/Side Drain (10 models)
• 9002845 — 26" Dia. Plastic Drain Pan w/Side Drain (10 models)
• 9003398 — Inner Door Gasket (4 models)
• 9003406 — Air Intake Screen (4 models)
• 9003447 — Diffuser Inlet Tube with Spacer (2 models)
• 9003473 — Turbo Inlet Tube with Spacer (2 models)
• 9003545 — Outer Door (4 models)
• 9003892005 — Anode Rod (5 models)
• 9003906015 — Drain Valve brass (4 models)
• 9003915015 — Nipple Heat Trap 3" (9 models)
• 9003938005 — Anode outlet MG (4 models)
• 9003972 — Anode, Aluminum - 6 Year (2 models)
• 9003977 — Nipples - 5 inch (4 models)
• 9004240 — Combination Gas Valve - Natural (2 models)
• 9004267 — Combination Gas Valve - Natural (2 models)
• 9004310 — Combination Gas Valve - Propane (1 model)
• 9004316 — Blower Assembly (4 models)
• 9004330 — Valve, Drain - Brass (2 models)
• 9004464 — Combination Gas Valve - Propane (2 models)
• 9005112 — Combination Gas Valve - Propane (1 model)
• 9005693 — Thermostat Shield (optional) (4 models)
• 9005938 — Burner Assembly - Natural Gas (1 model)
• 9005939 — Burner Assy - Natural Gas (1 model)
• 9005940 — Burner Assembly - Natural Gas (1 model)
• 9005941 — Burner Assy - Natural Gas (1 model)
• 9005943 — Burner Assembly- Propane Gas (1 model)
• 9005944 — Burner Assy - Propane Gas (1 model)
• 9005945 — Burner Assembly- Propane Gas (1 model)
• 9005946 — Burner Assy - Propane Gas (1 model)
• 9005958 — Igniter Assy, Hot Surface with Door Gasket (4 models)
• 9006017 — Pressure Switch Kit (4 models)
• 9006020 — Exhaust Adaptor Kit (4 models)
• 9006022 — Wire Harness (4 models)
• 9006027 — Vent Terminal Screen Kit (4 models)
• 9006028 — Flue Baffle and Restrictor Assembly Kit (4 models)
• 9006029 — FV Sensor and Bracket Kit (4 models)
• 9006141015 — Burner Door Gasket (5 models)
• 9006142015 — Viewport Assembly (5 models)
• 9006143015 — Piezoelectric Igniter Button (5 models)
• 9006299005 — Anode AL (1 model)
• 9006431005 — Cold Water Dip Tube (5 models)
• 9006435005 — Flue Baffl e (1 model)
• 9006436005 — Flue Baffl e (2 models)
• 9006437005 — Flue Baffl e (2 models)
• 9006438005 — Gas Control Valve/Thermostat (1 model)
• 9006439005 — Gas Control Valve/Thermostat (2 models)
• 9006440005 — Gas Control Valve/Thermostat (2 models)
• 9006441005 — Pilot Assembly Kit (Natural Gas) (5 models)
• 9006442005 — Burner/Door Assembly (1 model)
• 9006443005 — Burner/Door Assembly (2 models)
• 9006444005 — Burner/Door Assembly (2 models)
• 9006445015 — Flexible Manifold Tube (5 models)
• 9006449015 — Two Piece Wire Connector With Retainer Clip (5 models)
• 9006524005 — DV Burner/Door Assembly NG (1 model)
• 9006525005 — DV Burner/Door Assembly NG (1 model)
• 9006526005 — DV Burner/Door Assembly NG (1 model)
• 9006527005 — DV Burner/Door Assembly LP (1 model)
• 9006528005 — DV Burner/Door Assembly LP (1 model)
• 9006529005 — DV Burner/Door Assembly LP (1 model)
• 9006532005 — Dip Tube/ Heat Trap Assembly (1 model)
• 9006533005 — Dip Tube/ Heat Trap Assembly (1 model)
• 9006534005 — Dip Tube/ Heat Trap Assembly (2 models)
• 9006537005 — Gas Valve LP, WR 37C72U472 (4 models)
• 9006538005 — Direct Vent System Assembly (3 models)
• 9006539005 — Direct Vent Pipe (3 models)
• 9006540005 — Direct Vent Termination (3 models)
• 9006558005 — Gas Valve NG, WR (4 models)
• 9006627005 — DV Termination Safety Cover (4 models)
• 9006677005 — Direct Vent System Assembly (1 model)
• 9006678005 — Direct Vent Termination (1 model)
• 9006679005 — Direct Vent Pipe (1 model)
• 9006693005 — DV Burner/Door Assembly NG (1 model)
• 9006694005 — DV Burner/Door Assembly LP (1 model)
• 9006701005 — DV Termination Trim Plates (2) (4 models)