Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
AO Smith
Gas Water Heater

Model # FCG75251 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith FCG75251 water heater, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Error Codes

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 25 parts  |
Thermocouple 35489-2
#7

Water heater diagram

Thermocouple

Part #35489-2

The manufacturer no longer makes this part, and there's no substitute part

Restrictor 35405
#17

Water heater diagram

Restrictor

Part #35405

This item is not returnable
$3.05
In Stock
Draft Hood 39072-4
#14

Water heater diagram

Draft hood

Part #39072-4

$24.49 | 
20% OFF Phone Price : $30.49
In Stock
Tube 1417-60
#9

Water heater diagram

Tube

Part #1417-60

Replaced by #100109617

?
Manufacturer substitution
This part replaces 1417-60. Substitute parts can look different from the original.
$43.33
In Stock
Burner 41157-8
#4

Water heater diagram

Burner

Part #41157-8

Replaced by #9004089005

?
Manufacturer substitution
This part replaces 41157-8. Substitute parts can look different from the original.
$83.49
In Stock
Burner 181786-1
#2

Water heater diagram

Burner

Part #181786-1

Replaced by #181786-001

?
Manufacturer substitution
This part replaces 181786-1. Substitute parts can look different from the original.
$42.49
In Stock
Inner Door 39923
#12

Water heater diagram

Inner door

Part #39923

Replaced by #100109442

?
Manufacturer substitution
This part replaces 39923. Substitute parts can look different from the original.
$30.00
In Stock
Label 182734
#23

Water heater diagram

Label

Part #182734

Replaced by #182734-000

?
Manufacturer substitution
This part replaces 182734. Substitute parts can look different from the original.
$13.99
In Stock
Anode Rod 183523-36
#1

Water heater diagram

Anode rod

Part #183523-36

Replaced by #100109594

?
Manufacturer substitution
This part replaces 183523-36. Substitute parts can look different from the original.
$55.56
In Stock
Burner Tube 181784
#3

Water heater diagram

Burner tube

Part #181784

Replaced by #181784-000

?
Manufacturer substitution
This part replaces 181784. Substitute parts can look different from the original.
$32.49
In Stock

Most common symptoms to help you fix your water heaters

Choose a symptom to see related water heater repairs.

View all

Why isn't my water heater heating my water?

Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failu…

Read more

Why is there water in my water heater's drain pan?

Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element,…

Read more

Why does my hot water smell like rotten eggs?

Main causes: water supply needs chlorine treatment, anode rod too reactive…

Read more

Why isn't my water heater making enough hot water?

Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve asse…

Read more

Why is my water heater's pressure relief valve dripping water?

Main causes: faulty pressure relief valve, water is overheating…

Read more

Why isn't my water heater making the water hot enough?

Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excess…

Read more

Why is my water heater making the water too hot?

Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating elemen…

Read more

Effective articles & videos to help repair your water heaters

Use the advice and tips in these articles and videos to get the most out of your water heater.

View all
How to read a wiring schematic video

How to read a wiring schematic video

Learn how to decipher symbols so you can buy the right part for your problem.…

Read more
Easy DIY water heater repairs

Easy DIY water heater repairs

Read about some water heater repairs that you can easily do yourself.…

Read more
Water heater common questions

Water heater common questions

These common questions and answers can help you make the most of your water heater.…

Read more

Parts & More