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
Kenmore
Gas Water Heater

Model # 18333621 Official Kenmore 45 gas water heater

Here are the diagrams and repair parts for Official Kenmore 18333621 45 gas 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 40 parts  |
Insulation 013034
#21A

Replacement parts diagram

Insulation

Part #013034

This item is not returnable
$2.29
In Stock
Insulation 013035
#21B

Replacement parts diagram

Insulation

Part #013035

$7.50
In Stock
Tubing 051389
#7A

Replacement parts diagram

Tubing

Part #051389

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

Tank 901000
#22

Replacement parts diagram

Tank

Part #901000

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

Guarantee F642-27070A

#NI

All parts diagram

Guarantee

Part #F642-27070A

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

Tubing 051002
#7B

Replacement parts diagram

Tubing

Part #051002

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

Shield 008037
#2A

Replacement parts diagram

Shield

Part #008037

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

Burner 051151
#12

Replacement parts diagram

Burner

Part #051151

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

Door 039023A-19
#9

Replacement parts diagram

Door

Part #039023A-19

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

Orifice F145-0091
#6A

Replacement parts diagram

Orifice

Part #F145-0091

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

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