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Thermo-King
Water Heater

Model # 5-40-20LS8 Official Thermo-King electric water heater

Here are the diagrams and repair parts for Official Thermo-King 5-40-20LS8 electric water heater, as well as links to manuals and error code tables, if available.

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Error Codes

Model diagram and schematic

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Showing 10 of 16 parts  |
Thermostat 9000510
#16

Functional replacement parts diagram

Thermostat

Part #9000510

Replaced by #9001954015

?
Manufacturer substitution
This part replaces 9000510. Substitute parts can look different from the original.
BEST SELLER
$28.09 | 
18% OFF Phone Price : $34.09
In Stock
Thermostat 9000507
#15

Functional replacement parts diagram

Thermostat

Part #9000507

Replaced by #9000507015

?
Manufacturer substitution
This part replaces 9000507. Substitute parts can look different from the original.
BEST SELLER
$32.20 | 
16% OFF Phone Price : $38.20
In Stock
Water Heater Heating Element Gasket 9000308
#4

Functional replacement parts diagram

Water heater heating element gasket

Part #9000308

Replaced by #100108379

?
Manufacturer substitution
This part replaces 9000308. Substitute parts can look different from the original.
$33.33
In Stock
Water Heater Thermostat Bracket (replaces 0110238, 0110238-01, 0110322, 9000309015) 9000309
#8

Functional replacement parts diagram

Water heater thermostat bracket (replaces 0110238, 0110238-01, 0110322, 9000309015)

Part #9000309

Replaced by #100108380

?
Manufacturer substitution
This part replaces 9000309. Substitute parts can look different from the original.
$27.78
In Stock
Anode Rod 9000705
#2

Functional replacement parts diagram

Anode rod

Part #9000705

Replaced by #100300397

?
Manufacturer substitution
This part replaces 9000705. Substitute parts can look different from the original.
$55.38 | 
10% OFF Phone Price : $61.38
In Stock
Dip Tube 9001823
#12

Functional replacement parts diagram

Dip tube

Part #9001823

Replaced by #100108611

?
Manufacturer substitution
This part replaces 9001823. Substitute parts can look different from the original.
$24.29
In Stock
Thermostat 9000509
#7

Functional replacement parts diagram

Thermostat

Part #9000509

Replaced by #100108424

?
Manufacturer substitution
This part replaces 9000509. Substitute parts can look different from the original.
$30.00
In Stock
Wheelers Water Heater Temperature And Pressure Relief Valve 9000728
#1

Functional replacement parts diagram

Wheelers water heater temperature and pressure relief valve

Part #9000728

Replaced by #100108455

?
Manufacturer substitution
This part replaces 9000728. Substitute parts can look different from the original.
$35.56
In Stock
Anode Rod 9001822
#11

Functional replacement parts diagram

Anode rod

Part #9001822

Replaced by #100109624

?
Manufacturer substitution
This part replaces 9001822. Substitute parts can look different from the original.
$31.11
In Stock
Drain 9000058
#9

Functional replacement parts diagram

Drain

Part #9000058

Replaced by #100108269

?
Manufacturer substitution
This part replaces 9000058. Substitute parts can look different from the original.
$18.57
In Stock

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If your water heater runs out of hot water quickly and one of the two heating elements has failed, replace the element f…

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 30 minutes or less
How to replace an electric water heater anode rod

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If your hot water begins to smell like rotten eggs, replace the anode rod with a zinc-aluminum anode rod following the i…

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Repair difficulty
Time required
 15 minutes or less
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How to replace an electric water heater thermostat

If the water temperature fluctuates or you don't get enough hot water, follow these instructions to replace your water h…

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Repair difficulty
Time required
 30 minutes or less

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Water heater common questions

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