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Mdb8551asw 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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Drain Hose (Dishwasher)
Genuine Whirlpool part
By: Whirlpool
Part Number: WP99002652

This dishwasher drain hose channels wastewater from the pump to your home drain or air gap. Replacing a cracked, kinked, or clogged hose restores proper draining performance and helps prevent leaks or water backing into the tub. What it does:

  • Routes wastewater from the dishwasher to the household drain or air gap
  • A damaged, kinked, or blocked hose can cause slow/no drain, standing water, or leaks
  • Visible splits, soft spots, or persistent odors/backflow are common signs the hose should be replaced
  • Restores reliable draining and helps protect surrounding cabinets and flooring from water damage
What's included:
  • 1 drain hose
Install notes:
  • Disconnect power and shut off water before servicing
  • Pull the dishwasher forward and place a towel or pan to catch residual water
  • Match the original routing and maintain a proper high loop or air gap per local code to prevent backflow
  • Secure connections with clamps, ensure the hose isn't kinked, and run a test cycle to check for leaks

Do-It-Yourself Stories from Customers like You Dishwasher leaked every time it ran   John S. • Morgan , NJ • January 16, 2018

Replaced the seal at the Air/Water inlet and also replaced the drain hose. Drain hose had a worn spot due to vibration rubbing on the floor Read more

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Dishwasher Tub Edge Trim (Bottom)
Genuine Whirlpool part
By: Whirlpool
Part Number: WP99003041

This Tub Edge Trim (bottom) fits along the lower edge of the dishwasher tub opening. Replacing a cracked, warped, or missing trim restores a clean finished edge and helps the door open and close smoothly without rubbing or snagging.

  • Finishes and protects the bottom lip of the tub opening
  • Helps maintain proper clearance for the door panel and gasket
  • Replaces damaged, warped, discolored, or missing trim
  • Typical symptoms: loose or broken strip, rubbing when closing, visible gap along the lower edge
What's included: One bottom tub-edge trim piece
  • Disconnect power to the dishwasher before servicing
  • Open the door and remove the old trim by releasing its retaining tabs or screws; note orientation
  • Align the new trim on the lower tub edge and press or fasten until fully seated across the opening
  • Verify the door closes freely and the gasket seats evenly before restoring power

Do-It-Yourself Stories from Customers like You Part that shoots water to top spinning arm was coming apart and seals around door looked bad   Ralph L. • Miami , FL • June 20, 2016

I ordered a new rubber door seal for around door, new bottom door seal and spinner impeller and nut to hold on bottom arm as it looked weak. Everything worked great except bottom door seal which looks slightly different and would NOT stay on. I ended up putting back on the old one. Door doesnt leak but not sure it would even be worth it sending part back as I already tossed bag out. Other parts worked great and DW cleaning better. Read more

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Convertable Row Tine
Genuine Whirlpool part
By: Whirlpool
Part Number: WP99003496

This lower dishwasher rack fold away row tine can be used for both the left and right hand side. Color: light gray. Measures about 3-1/2 inches high by 10 inches deep.

Do-It-Yourself Stories from Customers like You The tines rusted   Don G. • Murray , UT • December 13, 2015

Replaced the tines. It was a piece of cake! Read more

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Top Wash Arm Retainer (Upper Spray Arm)
Genuine Whirlpool part
By: Whirlpool
Part Number: WP99002753

This top wash arm retainer secures the dishwasher's upper spray arm so it spins freely and stays aligned, helping maintain proper water distribution for upper-rack cleaning. Replace a cracked or worn retainer to reduce wobble and misalignment. What it does:

  • Holds the upper/ top spray arm in place on the spray assembly so the arm can rotate correctly.
  • Prevents the spray arm from slipping or wobbling during the wash cycle.
  • Helps restore proper water spray coverage to the upper rack when the original retainer is broken or worn.
  • Compatible with standard upper spray arm mounting—no modification required.
What's included:
  • Includes: 1 top wash arm retainer
Install notes:
  • Disconnect power to the appliance before beginning any repair.
  • You may need to remove the upper rack and/or the spray arm to access the retainer; keep parts organized for reassembly.
  • Inspect the spray arm and attachment for damage or debris while replacing the retainer.
  • Use hand tools only.

Do-It-Yourself Stories from Customers like You Heard intermittent grinding noise for maybe five seconds after it switched from fill to wash then later in cycles also   David J. • Appleton , WI • March 15, 2015

Spun each of the three wash arms by hand. All could be made to touch/scrape but the top one was super wabbly. Ordered both the arm and clip. Repair took less than a minute. Used a screwdriver to pry loose one side of the old clip to remove. Aligned the new parts and easily snapped into place. Read more

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Dishrack Adjuster
Genuine Whirlpool part
By: Whirlpool
Part Number: WPW10153533

Left hand side. For the right hand side order WPW10153534.

Do-It-Yourself Stories from Customers like You Dishwasher rack broken wheel / carriage arm   Kelley J. • Atlanta , GA • January 25, 2015

I ordered the replacement part from AppliancePartsPros after speaking with a representative for several minutes. He was very helpful and patient and I order the exact part I needed. 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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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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Knob, Rinse Aid (Dispenser Control)
Genuine Whirlpool part
By: Whirlpool
Part Number: WP99002614

Replacement rinse aid dispenser knob restores a simple, reliable way to set and dispense rinse aid in the dishwasher. It gives a clear tactile control for adjusting rinse aid release so dishes dry and rinse with fewer spots. What it does:

  • Replaces a cracked, stripped, missing, or hard-to-turn rinse aid control knob
  • Allows you to set the dispenser level or open/close the rinse aid dosing mechanism
  • Helps resolve problems where the knob won't turn or is detached from the dispenser
  • Matches the original dispenser interface for correct fit and operation
What's included: One rinse aid dispenser knob Install notes:
  • Always disconnect power to the appliance before servicing (unplug or switch off the breaker)
  • Access the rinse aid dispenser per the dishwasher service manual or OEM instructions
  • Align the knob on the dispenser post and press/snap it into place; avoid forcing or overtightening

Do-It-Yourself Stories from Customers like You Replacement part   Amy H. • Bee Spring , KY • January 17, 2021

Replaced the jet dry lid. Read more

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Screw (Fastener)
Genuine Whirlpool part
By: Whirlpool
Part Number: WPY912620

Small replacement screw that secures panels and internal components on compatible appliances. Restores proper fastening to reduce rattling and loose parts so controls and panels stay aligned during normal use. What it does:

  • Secures panels, brackets, and small components to the appliance frame or assemblies.
  • Helps stop rattling, vibration-related noise, and movement from loose parts.
  • Replaces a missing, worn, or stripped fastener to restore proper mounting.
  • Used wherever the original manufacturer specified this screw in service diagrams.
What's included: One screw. Install notes:
  • Disconnect power and water before working on the appliance to avoid shock or injury.
  • Match the replacement screw to the original by fit and thread before installation; do not force mismatched fasteners.
  • Start the screw by hand to avoid cross-threading; tighten securely but avoid over-torquing which can strip threads or damage components.
  • Refer to the appliance's service manual or parts diagram for exact location and any torque or threadlocker recommendations.

Do-It-Yourself Stories from Customers like You Door latch on my dishwasher was broken   William H. • Columbia , SC • January 26, 2018

Ordered the part from AppliancePartsPro's, watched the video, new latch works perfect. I've repaired several appliances in my house by diagnosing simple problems going to AppliancePartsPro's diagram's, ordering the part and installing myself. Never had any problems. The bearing in the back of the dryer was tricky but worked great. Keep track of all parts when you disassemble and assemble in reverse order. Taking photos as you disassemble helps for referencing if you get stumped. Read more

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Cabinet Mount Bracket
Genuine Whirlpool part
By: Whirlpool
Part Number: WP6-916881

The Cabinet Mount Bracket secures a built-in appliance to the surrounding cabinetry. Replacing a bent or missing bracket restores a tight, rattle-free installation so the unit stays level and aligned during everyday use.

  • Anchors the appliance to the cabinet or side walls to prevent shifting or tip-out
  • Maintains flush, level alignment with adjacent cabinets and countertop
  • Helps reduce vibration and rattling noises during operation
  • Replace if the original bracket is bent, cracked, corroded, or missing
What's included: Mounting bracket. Installation Notes:
  • Disconnect power and any utilities before starting work.
  • Support the appliance and pull it forward enough to access the mounting area.
  • Reuse manufacturer-specified screws or approved replacements; tighten securely without overtightening.
  • Secure both sides as originally configured and test operation.

Do-It-Yourself Stories from Customers like You Broken mounting brackets   Greyson H. • Woodbridge , CT • May 24, 2019

Followed video instructions Read more

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Trim Corner Edge (Left)
Genuine Whirlpool part
By: Whirlpool
Part Number: WP99003039

This left corner trim restores the finished edge on a refrigerator door or cabinet frame, improving appearance and helping protect the gasket area from damage. It's a direct-fit plastic trim piece used where the door meets the cabinet. What it does:

  • Covers and protects the door/frame corner to prevent chipping and wear
  • Helps maintain a smooth seal surface by securing the gasket edge
  • Reduces visible gaps or rough edges that cause cosmetic issues
  • Commonly replaced when cracked, broken, or missing after impact or wear
What's included:
  • One left corner trim piece
Install notes:
  • Unplug the appliance or disconnect power before beginning work when applicable
  • Remove any adjacent trim or fasteners gently to access the mounting area
  • Align the trim with the corner and press or fasten per the OEM attachment points
  • Avoid forcing the piece; inspect surrounding gasket and mounting clips and replace if damaged

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Roller, Cable Bracket (Guide Wheel), 1
Genuine Whirlpool part
By: Whirlpool
Part Number: WP99002608

This roller fits the cable bracket assembly and helps guide the cable smoothly to reduce binding and wear. It restores proper cable tracking so the mechanism moves more quietly and reliably. What it does:

  • Guides and supports the cable within the bracket so the cable runs true
  • Reduces rubbing, binding, and premature cable wear
  • Helps eliminate squeaks or grinding where the cable contacts the bracket
  • Restores smoother operation of the affected door/assembly movement
What's included:
  • One roller for the cable bracket (quantity: 1)
Install notes:
  • Disconnect power before starting any repair and follow all safety guidelines
  • Requires basic hand tools; access the bracket per your model's service instructions
  • Inspect the cable and bracket for wear or damage and replace if necessary
  • Test operation after installation to ensure proper cable routing and smooth movement

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Leveling Leg (Single)
Genuine Whirlpool part
By: Whirlpool
Part Number: WPW10143258

A replacement leveling leg that stabilizes your appliance and allows height adjustment for a secure, level install. Restores proper alignment to reduce rocking, vibration and uneven door gaps. What it does:

  • Raises and levels the appliance so all feet contact the floor evenly.
  • Stops rocking and excessive vibration that can cause noise or wear.
  • Helps restore proper drainage and door alignment by correcting tilt.
  • Matches original fit and function for reliable support.
What's included: One leveling leg. Install notes:
  • Disconnect power (and water for appliances with plumbing) before servicing.
  • Raise or support the appliance safely before removing or adjusting legs.
  • Turn the leg to raise or lower; make small adjustments and recheck level.
  • Use common hand tools (wrench or pliers) and avoid forcing damaged threads.

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Hose, Injector (Flexible Injector Hose)
Genuine Whirlpool part
By: Whirlpool
Part Number: WP99002852

This flexible injector hose routes liquid between the appliance's injector/dispenser and the pump or spray assembly, restoring proper dispensing and preventing leaks. It's a direct-replacement service part for affected injector connections. What it does

  • Carries water or detergent solution from the injector/dispenser to the pump or spray assembly
  • Restores normal dispensing when the original hose is cracked, split, or clogged
  • Prevents leaks that can cause puddling or improper wash cycles
  • Helps restore consistent flow so detergent and rinse/cleaning agents reach the tub
What's included
  • One injector hose
Install notes
  • Disconnect power and shut off the water supply before starting
  • Remove the old hose and reuse or replace any clamps or fittings as needed; install the new hose onto the same connection points
  • After installation, restore power/water and run a short cycle to check for leaks and correct dispensing

Do-It-Yourself Stories from Customers like You Rat or mouse chewed through the drain hose and the injector hose water on floor   Ivy M. • Sunnyvale , CA • December 20, 2019

Disconnected the drain hose, supply hose, and electrical plug. Removed front 2 screws holding the dishwasher to the countertop. Pulled the unit out and replaced both hoses. Read more

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Ball Bearing (Single)
Genuine Whirlpool part
By: Whirlpool
Part Number: WP99003068

This ball bearing helps support a rotating appliance assembly to reduce friction and enable smooth operation. Replacing a worn bearing restores quieter rotation and helps prevent further wear on adjoining parts. What it does:

  • Supports and centers a rotating shaft or drum to maintain smooth movement
  • Reduces friction between moving metal components for efficient operation
  • Can cause squealing, grinding, rubbing or excessive vibration when worn
  • Restoring the bearing can stop noise and improve rotation stability
What's included: One ball bearing. Install notes:
  • Disconnect power and follow before beginning any repair
  • Use correct tools and replacement procedures to avoid damage to the bearing housing or shaft
  • Inspect adjacent seals, shafts, and mounts when replacing the bearing and replace any damaged parts

Do-It-Yourself Stories from Customers like You The guides for the top slide was binding they were wore out.   Gary G. • West Winfield , NY • April 14, 2020

Bought new slides installed them worked fine now. Read more

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Cap, Rack
Genuine Whirlpool part
By: Whirlpool
Part Number: 99002905

Color: Dark Gray

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