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Bosch
Electric Wall Oven

Model # HBL8450UC/09 Official Bosch electric built-in oven

Here are the diagrams and repair parts for Official Bosch HBL8450UC-09 electric built-in oven, 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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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 92 parts  |
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
Power Supply 663802
#205

Pcb's assy diagram

Power supply

Part #663802

Replaced by #00663802

?
Manufacturer substitution
This part replaces 663802. Substitute parts can look different from the original.
$128.19 | 
9% OFF Phone Price : $140.19
In Stock
Element 144648
#317

Oven assy diagram

Element

Part #144648

Replaced by #00144648

?
Manufacturer substitution
This part replaces 144648. Substitute parts can look different from the original.
$108.49 | 
10% OFF Phone Price : $120.49
In Stock
Element 144667
#315

Oven assy diagram

Element

Part #144667

Replaced by #00144667

?
Manufacturer substitution
This part replaces 144667. Substitute parts can look different from the original.
$120.09 | 
9% OFF Phone Price : $132.09
In Stock
Door Gasket 491569
#307

Oven assy diagram

Door gasket

Part #491569

Replaced by #00491569

?
Manufacturer substitution
This part replaces 491569. Substitute parts can look different from the original.
$84.95 | 
7% OFF Phone Price : $90.95
In Stock
Repair Set 650874
#407

Door assy diagram

Repair set

Part #650874

Replaced by #00650874

?
Manufacturer substitution
This part replaces 650874. Substitute parts can look different from the original.
$308.86 | 
$12.00 OFF Phone Price : $320.86
In Stock
Spacer 427919
#306

Oven assy diagram

Spacer

Part #427919

Replaced by #00427919

?
Manufacturer substitution
This part replaces 427919. Substitute parts can look different from the original.
$19.80
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
Fan 643600
#201

Pcb's assy diagram

Fan

Part #643600

Replaced by #00643600

?
Manufacturer substitution
This part replaces 643600. Substitute parts can look different from the original.
$223.69 | 
5% OFF Phone Price : $235.69
In Stock
Terminal Box 436364
#204

Pcb's assy diagram

Terminal box

Part #436364

Replaced by #00436364

?
Manufacturer substitution
This part replaces 436364. 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 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 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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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 broil?

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

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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 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
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 wall oven door hinges

How to replace wall oven door hinges

If your oven door flops open fast, it's time to replace the hinges. Follow these step-by-step instructions to do it your…

Read more
Repair difficulty
Time required
 15 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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5 Holiday Cleaning Tasks Essential to Boosting Your Home’s Image

Get tips on completing essential holiday cleaning tasks to brighten your home.…

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Top questions about Sears and Sears PartsDirect

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