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Boss
Gas Water Heater

Model # 8-40-NQRT6 Official Boss gas water heater

Here are the diagrams and repair parts for Official Boss 8-40-NQRT6 gas 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 33 parts  |
Water Heater Temperature And Pressure Relief Valve 9000071
#20

Functional replacement parts diagram

Water heater temperature and pressure relief valve

Part #9000071

$15.54 | 
11% OFF Phone Price : $17.54
In Stock
Control V/v 9001319
#9

Functional replacement parts diagram

Control v/v

Part #9001319

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

Access 9000927
#24

Functional replacement parts diagram

Access

Part #9000927

This item is not returnable
$4.99
In Stock
Access Cover 9001764
#22

Functional replacement parts diagram

Access cover

Part #9001764

This item is not returnable
$5.99
In Stock
Flue Baffle 9000371
Flue baffle

Part #9000371

$20.99
In Stock
Access Bolt 9000928
#23

Functional replacement parts diagram

Access bolt

Part #9000928

This item is not returnable
$4.99
In Stock
Base Stand 9001421
#27

Functional replacement parts diagram

Base stand

Part #9001421

$62.99
In Stock
Box 9000356
#2

Functional replacement parts diagram

Box

Part #9000356

This item is not returnable
$4.99
In Stock
Water Heater Manifold Inner Door 9000281
#18

Functional replacement parts diagram

Water heater manifold inner door

Part #9000281

$17.69 | 
10% OFF Phone Price : $19.69
In Stock
Rexel Pan Base 9001609
#26A

Functional replacement parts diagram

Rexel pan base

Part #9001609

Replaced by #100108616

?
Manufacturer substitution
This part replaces 9001609. Substitute parts can look different from the original.
$64.44
In Stock

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