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AO Smith
Water Heater

AO Smith Water Heater Parts

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Product Type

  • Water Heater

Brand

  • AO Smith Parts

Model Number

Common Problems

Part Category

Part Title

AO Smith Water Heater Thermocouple

Item # 3317002

Kit 24" thermocouple

OEM Part - Manufacturer #9000056045

Order by 8:00 PM ET, this part ships TODAY!

AO Smith Water Heater Thermostat

Item # 4959988

Upper thermostat

OEM Part - Manufacturer #100108684

Order by 8:00 PM ET, this part ships TODAY!

AO Smith Water Heater Heating Element

Item # 4977922

Heating element 4500 Watt 240 Volt

OEM Part - Manufacturer #100108284

Order by 8:00 PM ET, this part ships TODAY!

AO Smith Water Heater Thermostat

Item # 4451587

Lower thermostat - AO Smith Electric Water Heater

OEM Part - Manufacturer #100108422

Order by 8:00 PM ET, this part ships TODAY!

AO Smith Water Heater Pilot

Item # 2637179

Natural gas pilot assembly

OEM Part - Manufacturer #9006666015

Order by 8:00 PM ET, this part ships TODAY!

AO Smith Water Heater Igniter

Item # 4454390

Hot surface igniter/sensor assembly

OEM Part - Manufacturer #100110771

Order by 8:00 PM ET, this part ships TODAY!

AO Smith Water Heater Anode Rod

Item # 4922157

Grid is 1 inch square
Anode Rod - Part # 4922157 Mfg Part # 100109594

Aluminum anode rod

OEM Part - Manufacturer #100109594

Order by 8:00 PM ET, this part ships TODAY!

AO Smith Water Heater Temperature and Pressure Relief Valve

Item # 4920797

Temperature and pressure valve

OEM Part - Manufacturer #100108279

Order by 8:00 PM ET, this part ships TODAY!

AO Smith Water Heater Temperature and Pressure Relief Valve

Item # 4894909

Temperature and Pressure Relief Valve 2" SHANK

OEM Part - Manufacturer #100108455

Order by 8:00 PM ET, this part ships TODAY!

AO Smith Water Heater Igniter

Item # 2636709

Grid is 1 inch square
Igniter - Part # 2636709 Mfg Part # 9003626005

Igniter/sensor assembly

OEM Part - Manufacturer #9003626005

Order by 8:00 PM ET, this part ships TODAY!

AO Smith Water Heater Spark Electrode

Item # 4582669

Grid is 1 inch square
Spark Electrode - Part # 4582669 Mfg Part # 100109221

Piezo igniter and bracket

OEM Part - Manufacturer #100109221

Order by 8:00 PM ET, this part ships TODAY!

AO Smith Water Heater Pilot

Item # 4814256

Grid is 1 inch square
Pilot - Part # 4814256 Mfg Part # 100109295

Pilot 190 degree c natural

OEM Part - Manufacturer #100109295

Order by 8:00 PM ET, this part ships TODAY!

AO Smith Water Heater Gas Burner

Item # 2637071

A.O. Smith gas water heater burner assembly

OEM Part - Manufacturer #9005938005

Order by 8:00 PM ET, this part ships TODAY!

AO Smith Water Heater Gas Burner

Item # 3317721

Grid is 1 inch square
Gas Burner - Part # 3317721 Mfg Part # 9003546005

Kit burner assy lp

OEM Part - Manufacturer #9003546005

AO Smith Water Heater Thermostat

Item # 4547467

Grid is 1 inch square
Thermostat - Part # 4547467 Mfg Part # 100109846

Thermostat 90/150 with limit.

OEM Part - Manufacturer #100109846

294 results