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Whirlpool
Wall Oven/Microwave Combo

Model # GSC278PJQ3 Official Whirlpool electric wall oven

Here are the diagrams and repair parts for Official Whirlpool GSC278PJQ3 electric wall oven, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 237 parts  |
Microwave Door Interlock Switch 4375346
#51

Cabinet and stirrer diagram

Microwave door interlock switch

Part #4375346

Replaced by #W10211972

?
Manufacturer substitution
This part replaces 4375346. Substitute parts can look different from the original.
BEST SELLER
$31.80 | 
16% OFF Phone Price : $37.80
In Stock
Wall Oven Temperature Sensor 4455636
#29

Oven/literature diagram

Wall oven temperature sensor

Part #4455636

Replaced by #WPW10131825

?
Manufacturer substitution
This part replaces 4455636. Substitute parts can look different from the original.
BEST SELLER
$63.52 | 
9% OFF Phone Price : $69.52
In Stock
Bake Element 4452153
#7

Internal oven diagram

Bake element

Part #4452153

Replaced by #WPW10207397

?
Manufacturer substitution
This part replaces 4452153. Substitute parts can look different from the original.
BEST SELLER
$49.26 | 
11% OFF Phone Price : $55.26
In Stock
Magnetron 4375072
#26

Cabinet and stirrer diagram

Magnetron

Part #4375072

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

Appliance Touch-up Paint 72017
#NI

Top venting/optional diagram

Appliance touch-up paint

Part #72017

Replaced by #72017

?
Manufacturer substitution
This part replaces 72017. Substitute parts can look different from the original.
BEST SELLER
$8.29 | 
11% OFF Phone Price : $9.29
In Stock
Mounting Bracket 4375336
#42A

Cabinet and stirrer diagram

Mounting bracket

Part #4375336

Replaced by #W10727408

?
Manufacturer substitution
This part replaces 4375336. Substitute parts can look different from the original.
BEST SELLER
$88.84 | 
6% OFF Phone Price : $94.84
In Stock
Oven Mounting Bracket 4375335
#42

Cabinet and stirrer diagram

Oven mounting bracket

Part #4375335

Replaced by #W10727408

?
Manufacturer substitution
This part replaces 4375335. Substitute parts can look different from the original.
BEST SELLER
$88.84 | 
6% OFF Phone Price : $94.84
In Stock
Oven Baseless Lamp 4375348
#53

Cabinet and stirrer diagram

Oven baseless lamp

Part #4375348

Replaced by #WPW10440740

?
Manufacturer substitution
This part replaces 4375348. Substitute parts can look different from the original.
BEST SELLER
$22.69 | 
21% OFF Phone Price : $28.69
In Stock
Range High-limit Thermostat 4451442
#37

Oven/literature diagram

Range high-limit thermostat

Part #4451442

Replaced by #WP9759243

?
Manufacturer substitution
This part replaces 4451442. Substitute parts can look different from the original.
BEST SELLER
$45.89 | 
12% OFF Phone Price : $51.89
In Stock
Microwave High-voltage Capacitor 4375020
#25

Cabinet and stirrer diagram

Microwave high-voltage capacitor

Part #4375020

Replaced by #WP4375020

?
Manufacturer substitution
This part replaces 4375020. Substitute parts can look different from the original.
BEST SELLER
$108.39 | 
10% OFF Phone Price : $120.39
In Stock

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