Bosch
Dryer

Model #WTMC6321US/03 Official Bosch dryer

Here are the diagrams and repair parts for Bosch WTMC6321US-03 dryer, 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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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

Showing 10 of 95 parts

Dryer Rear Bearing

#303

All parts Diagram

Bearing

Part #491607
Replaced by #00618931
?
Manufacturer substitution
This part replaces 491607. Substitute parts can look different from the original.
This item is not returnable
In Stock
$26.59 | 
16% OFF 
Phone Price: $31.59
Dryer Thermistor (replaces 00154166)

#325

All parts Diagram

Ntc

Part #154166
Replaced by #10010119
?
Manufacturer substitution
This part replaces 154166. Substitute parts can look different from the original.
In Stock
$24.93
Dryer Door Strike (replaces 491673)

#224

All parts Diagram

Door latch

Part #491673
Replaced by #00491673
?
Manufacturer substitution
This part replaces 491673. Substitute parts can look different from the original.
In Stock
$54.79 | 
8% OFF 
Phone Price: $59.79
Dryer Drum Support Roller (replaces 422200)

#315

All parts Diagram

Dryer drum support roller

Part #422200
Replaced by #00422200
?
Manufacturer substitution
This part replaces 422200. Substitute parts can look different from the original.
In Stock
$38.99 | 
11% OFF 
Phone Price: $43.99
Dryer Door Switch

#317

All parts Diagram

Switch

Part #422183
Replaced by #00422183
?
Manufacturer substitution
This part replaces 422183. Substitute parts can look different from the original.
In Stock
$43.21
Dryer Belt Switch

#412

All parts Diagram

Dryer belt switch

Part #491611
Replaced by #00491611
?
Manufacturer substitution
This part replaces 491611. Substitute parts can look different from the original.
This item is not returnable
In Stock
$35.59 | 
12% OFF 
Phone Price: $40.59
Dryer Wire Harness

#418

All parts Diagram

Dryer harness

Part #421678
Replaced by #00421678
?
Manufacturer substitution
This part replaces 421678. Substitute parts can look different from the original.
In Stock
$59.26
Dryer Lint Screen

#312

All parts Diagram

Dryer lint screen

Part #436476
Replaced by #00436476
?
Manufacturer substitution
This part replaces 436476. Substitute parts can look different from the original.
In Stock
$26.59 | 
16% OFF 
Phone Price: $31.59
Dryer Door Assembly

#223

All parts Diagram

Door

Part #244360
Replaced by #00249108
?
Manufacturer substitution
This part replaces 244360. Substitute parts can look different from the original.
In Stock
$452.50 | 
$10.00 OFF 
Phone Price: $462.50
Cable Harness

#107

All parts Diagram

Dryer harness

Part #421597
Replaced by #00421597
?
Manufacturer substitution
This part replaces 421597. Substitute parts can look different from the original.
In Stock
$19.62

Symptoms common to all dryers

Choose a symptom to see related dryer repairs.

Main causes: bad drum support roller, damaged idler pulley, broken blower fan blade, worn drum glide bearing, bad drive motor
Main causes: bad gas valve coils, broken heating element, tripped safety thermostat or fuse, bad operating thermostat, control failure
Main causes: bad timer or electronic control board, door switch failure
Main causes: lack of electrical power, bad power cord, wiring failure, bad control board, blown thermal fuse, bad door switch
Main causes: clogged exhaust vent, bad motor relay, loose dryer door catch, bad door switch, control system failure, faulty drive motor
Main causes: damaged door strike, worn door catch
Main causes: door switch failure, lack of power, broken belt, blown thermal fuse, bad drive motor, control system failure
Main causes: clogged exhaust system, heating system failure, deposits on moisture sensor, control system failure

Repair guides common to all dryers

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

August 1, 2014
By Lyle Weischwill
How to replace a dryer drum support roller

If your dryer thumps or squeals, replace the drum support roller to restore quiet to your home.

Repair difficulty
Time required
 90 minutes or less
August 1, 2014
By Lyle Weischwill
How to replace a dryer thermistor

The thermistor senses the air temperature in the dryer. If your dryer overheats or doesn't heat at all, the thermistor could be the problem.

Repair difficulty
Time required
 30 minutes or less
August 1, 2014
By Lyle Weischwill
How to replace a dryer idler pulley

The idler pulley exerts pressure keeps the drive belt tight so it can rotate the drum. A worn idler pulley squeals or squeaks when the dryer is running. Follow these instructions to replace it.

Repair difficulty
Time required
 90 minutes or less

Articles and videos common to all dryers

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

October 24, 2022

Easy DIY appliance repairs that anyone can do

By Lyle Weischwill

Get advice on simple DIY fixes for appliances that you can safely do on your own.

January 4, 2022

How to replace a Maytag dryer heating element

By Lyle Weischwill

Learn how to replace a Maytag dryer heating element

August 17, 2021

How to read a wiring schematic video

By Lyle Weischwill

Learn how to decipher symbols so you can buy the right part for your problem.