Whirlpool
Dishwasher

Model #DU1020XTLB0 Official Whirlpool undercounter dishwasher

Here are the diagrams and repair parts for Whirlpool DU1020XTLB0 undercounter dishwasher, 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”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Showing 10 of 150 parts

Dishwasher Dishrack Slide Rail Stop, Upper#4

Upper rack and track parts Diagram

Stop

Part #8524581
Replaced by #WP8565925
?
Manufacturer substitution
This part replaces 8524581. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
In Stock
$6.40 | 
14% OFF 
Phone Price: $7.40
Dishwasher Heating Element Kit (replaces 8194250, W10134009, W10441445)#1

Heater parts Diagram

Dishwasher heater

Part #8572861
Replaced by #W10518394
?
Manufacturer substitution
This part replaces 8572861. Substitute parts can look different from the original.
BEST SELLER
In Stock
$35.24 | 
16% OFF 
MSRP: $42.00
Dishwasher Dishrack Spray Arm Mount#5

Upper wash and rinse parts Diagram

Dishwasher upper spray arm mount

Part #8539324
Replaced by #WP8539324
?
Manufacturer substitution
This part replaces 8539324. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
In Stock
$6.01 | 
14% OFF 
Phone Price: $7.01
Dishwasher Door Seal and Strike Kit (replaces W10284090, W10350162)#3

Tub and frame parts Diagram

Dishwasher door seal

Part #8268888
Replaced by #W10542314
?
Manufacturer substitution
This part replaces 8268888. Substitute parts can look different from the original.
BEST SELLER
In Stock
$64.60 | 
7% OFF 
Phone Price: $69.60
Dishwasher Cabinet Seal (replaces W10179427, W10835073)#NI

Miscellaneous parts optional parts (not included) Diagram

Seal

Part #8269110
Replaced by #W10864081
?
Manufacturer substitution
This part replaces 8269110. Substitute parts can look different from the original.
BEST SELLER
In Stock
$63.65 | 
7% OFF 
Phone Price: $68.65
Dishwasher Water Feed Tube Spinner#3

Upper wash and rinse parts Diagram

Spinner

Part #8519736
Replaced by #8193768
?
Manufacturer substitution
This part replaces 8519736. Substitute parts can look different from the original.
BEST SELLER
In Stock
$19.99 | 
9% OFF 
Phone Price: $21.99
Dishwasher Chopper Assembly (replaces 8268383, W10083957)#6

Pump and motor parts Diagram

Dishwasher chopper assembly

Part #8268383
Replaced by #W10083957V
?
Manufacturer substitution
This part replaces 8268383. Substitute parts can look different from the original.
BEST SELLER
In Stock
$18.00 | 
31% OFF 
MSRP: $26.00
Dishwasher Thermostat#30

Tub and frame parts Diagram

Dishwasher thermostat

Part #661566
Replaced by #WP661566
?
Manufacturer substitution
This part replaces 661566. Substitute parts can look different from the original.
BEST SELLER
In Stock
$30.63 | 
14% OFF 
Phone Price: $35.63
Appliance Spray Paint (White) (replaces 094566-64, 206923, 2780-0001, 4395978, 5303203125, 66208, 788343, 799343, 799433, 99343, A0050702, F94566-010, Y057937, Y350930)#NI

Miscellaneous parts optional parts (not included) Diagram

Paint (white)

Part #350930
Replaced by #350930
?
Manufacturer substitution
This part replaces 350930. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
In Stock
$15.69 | 
11% OFF 
Phone Price: $17.69
Dishwasher Lower Spray Arm Seal#3

Lower washarm parts Diagram

Dishwasher lower spray arm seal

Part #8268340
Replaced by #WP8268340
?
Manufacturer substitution
This part replaces 8268340. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
In Stock
$4.39 | 
19% OFF 
Phone Price: $5.39

Symptoms common to all dishwashers

Choose a symptom to see related dishwasher repairs.

Main causes: broken door latch, tripped circuit breaker, broken heating element, faulty vent fan, sensor failure, control system problem
Main cause: damaged rack height adjuster
Main causes: damaged or stuck spray arm, leaking door seal, damaged door hinge, leaky heating element water seal, cracked water supply line
Main causes: clogged kitchen sink drain, clogged drain hose, drain check valve damaged, drain pump failure, control system problem
Main causes: water supply problem, stuck overfill float, clogged water inlet valve screen, water inlet valve failure
Main causes: glass or popcorn kernel stuck in the chopper blade, drain line vibrating against the cabinet, debris in wash pump or drain pump
Main causes: broken door spring, damaged or broken door hinge
Main causes: not using rinse aid, rinse aid dispenser failure, broken heating element, malfunctioning vent, drying fan failure
Main causes: light switch beside the sink turned off, lack of power, bad dishwasher door switch, control system failure, wiring problem

Repair guides common to all dishwashers

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

October 1, 2016
By Lyle Weischwill
How to replace a dishwasher door latch assembly

If the dishwasher door doesn't click shut, a broken door latch is a likely cause. Follow these instructions to replace it yourself.

Repair difficulty
Time required
 30 minutes or less
How to replace a dishwasher user interface control

The user interface control houses the selection buttons and display. If it fails, you can't select the cycle and settings. Follow these instructions to replace it yourself.

Repair difficulty
Time required
 30 minutes or less
April 1, 2014
By Lyle Weischwill
How to replace a dishwasher thermal fuse

A completely dead control panel often indicates that the thermal fuse on the electronic control board is blown; follow these steps to replace a blown thermal fuse in your dishwasher.

Repair difficulty
Time required
 15 minutes or less

Articles and videos common to all dishwashers

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

November 13, 2022

7 Tips to Get Your Dishwasher Ready for the Holidays

By Lyle Weischwill

Find professional tips that can help you get your dishwasher ready for the holidays.

December 23, 2021

How to reset a Whirlpool dishwasher

By Lyle Weischwill

Learn how to reset a Whirlpool dishwasher when its control freezes up.

April 10, 2020

Cleaning your appliances after a drinking water advisory

By Julie Riebe

Find out how to clean and flush household appliances once a boil water advisory is lifted.