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Whirlpool
Countertop Microwave

Model # MT4078SPB0 Official Whirlpool countertop microwave

Here are the diagrams and repair parts for Official Whirlpool MT4078SPB0 countertop microwave, as well as links to manuals and error code tables, if available.

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Installation guide
Owner’s manual

Model diagram and schematic

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Showing 10 of 54 parts  |
Screw 4358192
Screw

Part #4358192

Replaced by #W11380570

?
Manufacturer substitution
This part replaces 4358192. Substitute parts can look different from the original.
This item is not returnable
$18.19 | 
10% OFF Phone Price : $20.19
In Stock
Turntable Motor 8184375
#11

Oven cavity parts diagram

Turntable motor

Part #8184375

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

Fan Blade 8184292
#1

Oven interior parts diagram

Fan blade

Part #8184292

$36.16
In Stock
Support 4359723
#8

Oven cavity parts diagram

Support

Part #4359723

$41.73
In Stock
Switch 8184286
#4

Latch board parts diagram

Switch

Part #8184286

Replaced by #4392027

?
Manufacturer substitution
This part replaces 8184286. Substitute parts can look different from the original.
$69.11 | 
8% OFF Phone Price : $75.11
In Stock
Switch 8184285
#3

Latch board parts diagram

Switch

Part #8184285

Replaced by #4392027

?
Manufacturer substitution
This part replaces 8184285. Substitute parts can look different from the original.
$69.11 | 
8% OFF Phone Price : $75.11
In Stock
Microwave Screw 4358489
Microwave screw

Part #4358489

Replaced by #4344826

?
Manufacturer substitution
This part replaces 4358489. Substitute parts can look different from the original.
$12.49
In Stock
Microwave High-voltage Diode 8205489
#8

Oven interior parts diagram

Microwave high-voltage diode

Part #8205489

Replaced by #WP8205489

?
Manufacturer substitution
This part replaces 8205489. Substitute parts can look different from the original.
$32.49 | 
16% OFF Phone Price : $38.49
In Stock
Electronic Control 8205473
#6

Control panel parts diagram

Electronic control

Part #8205473

Replaced by #WP8205473

?
Manufacturer substitution
This part replaces 8205473. Substitute parts can look different from the original.
$260.49
In Stock
Button Plug 4358857
#5A

Oven cavity parts diagram

Button plug

Part #4358857

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

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