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Boss
Gas Water Heater

Model # 8-50-NQRT6-5 Official Boss gas water heater

Here are the diagrams and repair parts for Official Boss 8-50-NQRT6-5 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”.

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

Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 26 parts  |
Water Heater Thermocouple 9000283
#14

Round gas diagram

Water heater thermocouple

Part #9000283

Replaced by #H06E-36

?
Manufacturer substitution
This part replaces 9000283. Substitute parts can look different from the original.
This item is not returnable
$14.52 | 
12% OFF Phone Price : $16.52
In Stock
Control V/v 9001319
#9

Round gas diagram

Control v/v

Part #9001319

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

Box 9000356
#2

Round gas diagram

Box

Part #9000356

This item is not returnable
$4.99
In Stock
Flue Baffle 9000363
Flue baffle

Part #9000363

$32.49
In Stock
Anode Rod 9000734
#21

Round gas diagram

Anode rod

Part #9000734

Replaced by #100108660

?
Manufacturer substitution
This part replaces 9000734. Substitute parts can look different from the original.
$60.00
In Stock
Anode Rod 9001314
#6

Round gas diagram

Anode rod

Part #9001314

Replaced by #100300397

?
Manufacturer substitution
This part replaces 9001314. Substitute parts can look different from the original.
$55.38 | 
10% OFF Phone Price : $61.38
In Stock
Rexel Pan Base 9001609
#26A

Round gas 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
Pilot 9000284
#15

Round gas diagram

Pilot

Part #9000284

Replaced by #100109070

?
Manufacturer substitution
This part replaces 9000284. Substitute parts can look different from the original.
$47.78
In Stock
Water Heater Vent Draft Hood (replaces 183853-000, 2190144, 9003499) 9000274
#1

Round gas diagram

Water heater vent draft hood (replaces 183853-000, 2190144, 9003499)

Part #9000274

Replaced by #100108368

?
Manufacturer substitution
This part replaces 9000274. Substitute parts can look different from the original.
$36.67
In Stock
Nipple 9000948
#4

Round gas diagram

Nipple

Part #9000948

Replaced by #9002564

?
Manufacturer substitution
This part replaces 9000948. Substitute parts can look different from the original.
$19.19 | 
9% OFF Phone Price : $21.19
In Stock

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