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Reliance
Water Heater

Model # 8-66-2ART8 Official Reliance electric water heater

Here are the diagrams and repair parts for Official Reliance 8-66-2ART8 electric water heater, as well as links to manuals and error code tables, if available.

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  • 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”.

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Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 23 parts  |
Thermostat 9000510
#7

Round electric 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 9000512
#11

Round electric diagram

Thermostat

Part #9000512

Replaced by #9000507015

?
Manufacturer substitution
This part replaces 9000512. 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

Round electric diagram

Water heater heating element gasket

Part #9000308

Replaced by #9000308005

?
Manufacturer substitution
This part replaces 9000308. Substitute parts can look different from the original.
$30.62 | 
16% OFF Phone Price : $36.62
In Stock
Access 9000927
#21

Round electric diagram

Access

Part #9000927

This item is not returnable
$4.99
In Stock
Access Cover 9001764
#19

Round electric diagram

Access cover

Part #9001764

This item is not returnable
$5.99
In Stock
Access Bolt 9000928
#20

Round electric diagram

Access bolt

Part #9000928

This item is not returnable
$4.99
In Stock
Thermostat 9000523
#9A

Round electric diagram

Thermostat

Part #9000523

Replaced by #100108424

?
Manufacturer substitution
This part replaces 9000523. Substitute parts can look different from the original.
$30.00
In Stock
Access Panel 9000401
#25

Round electric diagram

Access panel

Part #9000401

Replaced by #9000581

?
Manufacturer substitution
This part replaces 9000401. Substitute parts can look different from the original.
$16.99
In Stock
Water Heater Thermostat Bracket (replaces 0110238, 0110238-01, 0110322, 9000309015) 9000309
#12

Round electric 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
Light 9000325
#24

Round electric diagram

Light

Part #9000325

Replaced by #100108384

?
Manufacturer substitution
This part replaces 9000325. Substitute parts can look different from the original.
$30.00
In Stock

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How to replace a water heater element

How to replace a water heater element

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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Repair difficulty
Time required
 30 minutes or less
How to replace an electric water heater anode rod

How to replace an electric water heater anode rod

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
How to replace an electric water heater thermostat

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

Effective articles & videos to help repair your water heaters

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How to read a wiring schematic video

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Easy DIY water heater repairs

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Water heater common questions

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