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Bosch
Electric Wall Oven

Model # HBL8450UC/03 Official Bosch electric built-in oven

Here are the diagrams and repair parts for Official Bosch HBL8450UC-03 electric built-in oven, 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.

Installation guide
Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 86 parts  |
Door Seal 144652
#403

Door assy diagram

Door seal

Part #144652

Replaced by #00144652

?
Manufacturer substitution
This part replaces 144652. Substitute parts can look different from the original.
$39.29 | 
13% OFF Phone Price : $45.29
In Stock
Glass 680088
#404

Door assy diagram

Glass

Part #680088

Replaced by #00770023

?
Manufacturer substitution
This part replaces 680088. Substitute parts can look different from the original.
$182.39 | 
6% OFF Phone Price : $194.39
In Stock
Wall Oven Extension Rack 478316
#602

Shelfs diagram

Wall oven extension rack

Part #478316

Replaced by #00478316

?
Manufacturer substitution
This part replaces 478316. Substitute parts can look different from the original.
$394.03 | 
$12.00 OFF Phone Price : $406.03
In Stock
Glass Panel 478310
#406

Door assy diagram

Glass panel

Part #478310

Replaced by #00478310

?
Manufacturer substitution
This part replaces 478310. Substitute parts can look different from the original.
$137.56 | 
8% OFF Phone Price : $149.56
In Stock
Bracket 610187
#409

Door assy diagram

Bracket

Part #610187

Replaced by #00613179

?
Manufacturer substitution
This part replaces 610187. Substitute parts can look different from the original.
$23.49
In Stock
Temperature Limit 612548
#202

Pcb's assy diagram

Temperature limit

Part #612548

Replaced by #00617877

?
Manufacturer substitution
This part replaces 612548. Substitute parts can look different from the original.
$29.36
In Stock
Bracket 610188
#408

Door assy diagram

Bracket

Part #610188

Replaced by #00613178

?
Manufacturer substitution
This part replaces 610188. Substitute parts can look different from the original.
$30.31 | 
17% OFF Phone Price : $36.31
In Stock
Element 663805
#309

Oven assy diagram

Element

Part #663805

Replaced by #00663805

?
Manufacturer substitution
This part replaces 663805. Substitute parts can look different from the original.
$78.59 | 
7% OFF Phone Price : $84.59
In Stock
Sensor 642855
#308

Oven assy diagram

Sensor

Part #642855

Replaced by #00642855

?
Manufacturer substitution
This part replaces 642855. Substitute parts can look different from the original.
$64.49 | 
9% OFF Phone Price : $70.49
In Stock
Oven Harness 663791
#NI

Control panel diagram

Oven harness

Part #663791

Replaced by #00663791

?
Manufacturer substitution
This part replaces 663791. Substitute parts can look different from the original.
$32.67
In Stock

Most common symptoms to help you fix your wall oven

Choose a symptom to see related wall oven repairs.

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Why won't my wall oven door unlock?

Main causes: bad oven door lock assembly, faulty electronic control board, wiring failure…

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Why won't my wall oven broil?

Main causes: broken broil element, faulty broil burner igniter, control system failure…

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Why won't my wall oven bake?

Main causes: broken bake element, bad bake burner igniter, tripped thermal switch, control system failure…

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Why isn't my wall oven at the temperature I set?

Main causes: faulty oven temperature sensor, control system problem, weak burner igniter, damaged oven element…

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Why doesn't my wall oven work?

Main causes: lack of electrical power, bad electronic control board, faulty oven control thermostat…

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Why won't my wall oven heat?

Main causes: lack of gas supply, broken igniter, tripped circuit breaker, broken oven element, tripped thermal fuse, con…

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Most common repair guides to help fix your wall oven

These step-by-step repair guides will help you safely fix what’s broken on your wall oven.

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How to replace a wall oven door outer glass panel

How to replace a wall oven door outer glass panel

Learn how to replace a damaged outer window panel on your wall oven door with these step-by-step instructions. …

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Repair difficulty
Time required
 45 minutes or less
How to replace a wall oven control thermostat

How to replace a wall oven control thermostat

Get your oven temperature under your control by replacing a faulty oven control thermostat.…

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Repair difficulty
Time required
 60 minutes or less
How to replace a wall oven thermal fuse

How to replace a wall oven thermal fuse

The thermal fuse trips to prevent the over from excessively overheating. The oven won't heat again until you replace the…

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Repair difficulty
Time required
 60 minutes or less

Effective articles & videos to help repair your wall oven

Use the advice and tips in these articles and videos to get the most out of your wall oven.

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