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Mdb4050 Parts

Some parts shown may not be for your model. To see parts for your model only, select it from "Matching Model Numbers" list on the left.

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Indicator Light
Genuine Whirlpool part
By: Whirlpool
Part Number: WP903115

To order indicator lens use WP22001948.

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Lid Hinge Pin
Genuine Whirlpool part
By: Whirlpool
Part Number: WP6-912678

This is the longer of the two dispenser lid hinge pins. For the shorter lid hinge pin order WPY912679.

Do-It-Yourself Stories from Customers like You Problem with detergent cup lid.   John M. • Craig , CO • November 27, 2017

The foam was shot on the detergent cup lid. Hard as a rock. Causing caking problems, dribble down the inside wall of the door and leaving lumps of detergent. Cut the door in half wit aviation snips and pulled out the two halves. Discovered at this point that the spring had gone soft. Bought one ahead of time, so I was set. Put the spring on the left pin, put the spring pin in the door, slipped the door into place (open) and put the right pin in with pliers. Door snaps open now. Read more

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Dishwasher Tub Insulation Pad
Genuine Whirlpool part
By: Whirlpool
Part Number: WPW10223013

Insulates your dishwasher tub to reduce noise and maintain temperature. Replace if worn, damaged by pests, or causing odors. Confirm fit with your model.

Do-It-Yourself Stories from Customers like You Mice got tnto the dishwasher insulation   Leslie S. • Ellensburg , WA • October 11, 2014

Replaced the insjulation blanket Read more

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Dishwasher Detergent Dispenser Cover Hinge Pin
Genuine Whirlpool part
By: Whirlpool
Part Number: WPY912679

This is a small metal or plastic hinge pin that secures the detergent dispenser door on the dishwasher's inner door panel. It allows the dispenser cover to pivot open during the wash cycle to release detergent. Replace this pin if the dispenser door falls off, won't stay closed, or fails to open properly during a cycle.

Do-It-Yourself Stories from Customers like You Problem with detergent cup lid.   John M. • Craig , CO • November 27, 2017

The foam was shot on the detergent cup lid. Hard as a rock. Causing caking problems, dribble down the inside wall of the door and leaving lumps of detergent. Cut the door in half wit aviation snips and pulled out the two halves. Discovered at this point that the spring had gone soft. Bought one ahead of time, so I was set. Put the spring on the left pin, put the spring pin in the door, slipped the door into place (open) and put the right pin in with pliers. Door snaps open now. Read more

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Screw
Genuine Whirlpool part
By: Whirlpool
Part Number: WP33002917

Specs: No.8X1/2 HEX WASHER HEAD

Do-It-Yourself Stories from Customers like You Control board shorted out during drying cycle with a series of loud popping noises creating a blackened corner of the dishwasher door a pungent electircal fire smell and tripped circuit breaker   Charles L. • Concord , MA • November 01, 2014

Replaced the control board after removing the inner door liner, plastice board cover and board itself, by removing screws, working various plastic clips/tabs and unclipping wire harnesses from board. most of time was spent cleaning the black soot from the door, which had a terrible burnt electrical/plastic fire smell. Cleaned mold/scale off of as much of the door as I could while in there as well. Removing parts without breaking plastic tabs to hold the new parts was trickiest part. Read more

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Screw
Genuine Whirlpool part
By: Whirlpool
Part Number: WP489128

Screw: 8-16 x 3/8 inch.

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Appliance Panel Mounting Screw
Genuine Whirlpool part
By: Whirlpool
Part Number: WP489491

Replacement screw secures appliance panels, brackets, and internal components. Needed when original screws are stripped, missing, or damaged during repair.

Do-It-Yourself Stories from Customers like You 15 year old refrigerator door handle broke   Martine G. • Everett , WA • March 30, 2015

I watched a 3 minute video on You Tube on how to replace a refrigerator door handle and it took me 3 minutes to replace mine. Super easy! Read more

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Dispenser Grommet (Detergent/Rinse Aid), 1 Pack
Genuine Whirlpool part
By: Whirlpool
Part Number: WP99001553

This small rubber grommet seals the opening around the dishwasher's detergent/rinse-aid dispenser, helping prevent leaks and moisture intrusion so the dispenser operates reliably throughout the wash cycle.

  • Seals the dispenser passage to keep water from leaking into or out of the dispenser cavity
  • Helps ensure proper detergent or rinse-aid dispensing
  • Can reduce moisture-related corrosion or staining in the dispenser area
What's included: One dispenser grommet Install notes:
  • Disconnect power and turn off water before servicing
  • Remove inner door panel to access the dispenser assembly
  • Note grommet orientation; seat fully to ensure a watertight seal
  • Inspect surrounding surfaces for debris or damage before reassembly

Do-It-Yourself Stories from Customers like You Water leakage bottom right of dishwasher door   David D. • Venice , FL • November 20, 2014

After discovering your web site and reading of others issues I ordered a door seal (my old one was a little short on the right side) a detergent door grommet, and the 2 water deflectors ( I decided to cover all the bases while I was at it. Very simple job with the information provided on your web site. I certainly have the confidence to tackle other appliance repair now. Read more

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Dishwasher Bowl Tine
Genuine Whirlpool part
By: Whirlpool
Part Number: WP99002138

Rear bowl tine for dishwasher lower rack. Replace when rusted, cracked, broken, or missing. Snaps into place on rack to hold bowls securely during wash.

Do-It-Yourself Stories from Customers like You Rusty worn out dishrack and parts   Michael R. • Morris Plains , NJ • March 26, 2016

I ordered new replacement parts. Read more

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Dishwasher Folding Tine Sleeve
Genuine Whirlpool part
By: Whirlpool
Part Number: WPW10116789

Protects tine tips from rust and prevents dish scratching. Replace when cracked, missing, or worn to extend rack life. Confirm fit with your model.

Do-It-Yourself Stories from Customers like You Dishwasher adjustable bowl holder broken   Paul B. • Kearneysville , WV • December 05, 2014

Bought the parts. Watched the video from the website...super easy. Read more

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Tub Wheel
Genuine Whirlpool part
By: Whirlpool
Part Number: WPY912798

The Tub Wheel supports and guides the washer's tub assembly on its base during wash and spin cycles. Replacing a worn wheel restores smoother, quieter operation and helps reduce vibration and rubbing as the machine operates.

  • Provides rolling support so the tub can move and self-balance during cycles
  • Reduces friction between the tub and the base/frame
  • Helps keep the tub centered to minimize noise and vibration
  • Failure symptoms include squeaking or grinding, scraping noises, dragging movement, or visible flat spots/cracks on the wheel
What's included: 1 tub wheel Install notes:
  • Disconnect power and water supply before servicing; wear appropriate gloves and eye protection
  • Access the base/suspension per the service information and support the tub to remove load from the wheel
  • Remove the retainer/axle, install the new wheel, and free rotation and correct orientation
  • Reassemble, level the appliance, and run a spin test to check for noise and balance

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Dishwasher Lower Spray Arm
Genuine Whirlpool part
By: Whirlpool
Part Number: WP99001788

Replacement lower spray arm for dishwashers. Installs at the bottom of the tub to distribute water during wash cycles. Replace if cracked, clogged, or broken.

Do-It-Yourself Stories from Customers like You Upper spray arm fell off!   Grant I. • Lombard , IL • March 14, 2017

Found the retaining clip on the parts list. Watched the videos to figure out how the upper arm attaches. Tried cleaning out the terribly clogged upper arm. Then looked at the lower wash arm--WOW! Talk about ugly clogs! Watched second video to see how that lower arm comes off. Got the lower arm off and realized all the gunk I was able to poke out of the holes would just come back, so replaced both spray arms. YES, the upper arm includes the retaining clip!! Parts arrived in 1.5 days.... Read more

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Tub Wheel (Dishwasher), Single
Genuine Whirlpool part
By: Whirlpool
Part Number: WP99002342

This tub wheel mounts on the dishwasher's tub wall to guide and support the rack as it slides in and out. Replacing a worn wheel restores smooth rack movement and helps prevent binding, noise, and derailments.

  • Mounts to the tub to provide rolling support for the dish rack/rail
  • Replaces cracked, flattened, or missing wheels that impede rack travel
  • Helps fix racks that stick, bind, are hard to pull/push, or derail
  • Reduces grinding or squeaking from the rack area
What's included: 1 tub wheel
  • Disconnect power at the breaker before servicing
  • Open the door and pull the rack forward for access
  • Release the old wheel from its retainer/axle per your model's design; install the new wheel in the same orientation
  • Ensure the wheel spins freely and the rack slides smoothly before use

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Dishwasher Tension Spring
Genuine Whirlpool part
By: Whirlpool
Part Number: WPW10116816

Replacement tension spring for dishwasher doors and mechanisms. Restores proper return force when the original spring is broken, stretched, or missing.

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Dishwasher Leveling Leg
Genuine Whirlpool part
By: Whirlpool
Part Number: WPW10143258

Replacement leveling leg that stabilizes and adjusts your dishwasher height for proper alignment. Needed when bent, broken, or missing to eliminate rocking.

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Dishwasher Dispenser Retainer Clip
Genuine Whirlpool part
By: Whirlpool
Part Number: WP99001288

Fix loose or rattling dishwasher trim panels with this dispenser retainer clip. Secures interior panels and exterior trim for proper fit. Easy repair.

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  • Over 2.1 Million Parts In Stock Over 2.1 Million Parts In Stock
  • 2 Day Quick Delivery! 2 Day Quick Delivery!
  • 365 Day Return Policy! 365 Day Return Policy!
  • Repair ForumFree Tech Support!
  • Google Trusted Store Google Trusted Store