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Lds4821bb 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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Dishwasher Gasket
Genuine Lg part
By: Lg
Part Number: 4986DD3001A

Creates a watertight seal to prevent leaks in your dishwasher. Replace when worn or cracked to stop water damage. Confirm fit with your model number.

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$21.29
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Guide Assembly (Dishrack Rail)
Genuine Lg part
By: Lg
Part Number: 4975DD1001A

This guide assembly is the track that supports and directs a dishwasher rack as it slides in and out. Replace a worn or damaged guide to restore smooth rack movement, alignment, and reliable loading. What it does:

  • Provides the sliding path that supports and guides the dishrack
  • Maintains rack alignment to prevent derailment
  • Helps the rack extend and retract smoothly without binding
  • Common symptoms: rack hard to slide, tilts or falls off track, scraping/grinding noises, visible cracks or broken tabs on the guide
What's included:
  • 1 guide assembly
Install notes:
  • Disconnect power and shut off water before servicing the dishwasher
  • Pull the rack out and remove any end caps or stops to access the guide
  • Release locking tabs or screws, note orientation, and swap the old guide with the new one
  • Reinstall stops/end caps and test rack travel for smooth operation

Do-It-Yourself Stories from Customers like You Drain hose had a crack and the guide assembly looked bad   Mike L. • Oxford , FL • March 07, 2018

I replaced both items. And it was easier than I thought. Read more

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$128.67
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Nut (Common)
Genuine Lg part
By: Lg
Part Number: 4020FD3641C

This is a common fastening nut used to secure panels, trim, or components on compatible LG appliances. It provides a simple, reliable way to hold mating parts in place and restore proper fit and function. What it does

  • Secures panels, brackets, or hardware to prevent movement or vibration
  • Stops rattling or loose parts caused by a missing or worn nut
  • Restores proper alignment when replacing damaged or stripped fasteners
  • Works where a standard threaded nut is required for reassembly
What's included
  • One common nut as pictured
Install notes
  • Disconnect power and water before servicing the appliance
  • Use the properly sized wrench or socket to avoid rounding the nut
  • Do not overtighten; tighten until snug and secure per OEM torque guidance
  • Replace like-for-like—thread size and type match the original

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$7.52
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Parts Assembly (Replacement)
Genuine Lg part
By: Lg
Part Number: AGM72573101

This parts assembly is a direct-replacement assembly used to restore the original mechanical/electrical components it contains so the appliance can operate as designed. It replaces a worn or damaged assembly to help resolve related failures. What it does

  • Replaces the factory assembly that houses the appliance's internal components and connections.
  • Restores proper component alignment and secure mounting to prevent intermittent faults.
  • Addresses symptoms such as failure to operate, unusual noises, loose or damaged internal parts, or intermittent electrical/connectivity issues.
  • Works as the factory-specified repair for units showing wear or damage in the affected assembly area.
What's included One parts assembly Install notes
  • Disconnect power (unplug or shut off breaker) before servicing to avoid shock or injury.
  • Handle internal components carefully to avoid damage to wiring, connectors, or sensors.
  • Follow the OEM service manual and wiring diagrams for correct installation and routing.

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$31.95
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Dishwasher Rack Rail Assembly
Genuine Lg part
By: Lg
Part Number: 5219DD2002A

Replacement rack rail assembly for dishwashers. Guides and supports dish racks for smooth sliding. Needed when rails are cracked, broken, or worn.

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$40.95
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Dishwasher Front Cabinet Frame Assembly
Genuine Lg part
By: Lg
Part Number: 3211DD1001A

Replaces the front cabinet frame that provides mounting surface for door components. Needed when original frame is cracked, bent, or damaged.

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$35.59
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Switch,Micro
Genuine Lg part
By: Lg
Part Number: 3W40025P

 

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$26.72
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Dishwasher Door Hinge Assembly
Genuine Lg part
By: Lg
Part Number: 4775ED3003A

Secures and pivots the dishwasher door for smooth opening and proper alignment. Replace if your hinge is broken, cracked, or worn to restore stability.

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$71.95
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Dishwasher Protective Cover Cap
Genuine Lg part
By: Lg
Part Number: 3550DD2001A

Protective cover cap for dishwasher installation. Replaces cracked, broken, or missing caps. Ensures proper coverage and protection of components.

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$11.95
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Dishwasher Rack Rail Assembly
Genuine Lg part
By: Lg
Part Number: 5219DD2001A

Replacement rack rail assembly for your dishwasher. Guides dish rack smoothly in and out. Replace when cracked, broken, or causing rack misalignment.

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$43.48
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Dishwasher Base Cover Assembly
Genuine Lg part
By: Lg
Part Number: ACQ31707201

Base cover assembly for dishwashers. Installs at the bottom to protect internal components. Replace if cracked, damaged, or missing for proper coverage.

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$35.95
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Window
Genuine Lg part
By: Lg
Part Number: MKC42606301

 

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Dishwasher Outer Door Seal
Genuine Lg part
By: Lg
Part Number: 3920DD3002B

Seals dishwasher door to prevent leaks, contain heat and moisture. Replace if water escapes, steam leaks, or seal is cracked. Verify fit by model number.

Do-It-Yourself Stories from Customers like You Water leak   John M. • Plainfield , IL • December 22, 2025

Replaced the door gasket. Read more

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Upper Rack Assembly
Genuine Lg part
By: Lg
Part Number: AHB32983761

The Upper Rack Assembly is an OEM part for LG dishwashers. This part provides a durable and efficient space for washing glasses, cups, and smaller dishes. This assembly maximizes the cleaning capacity of your dishwasher, allowing for the organized placement of items to ensure they are thoroughly cleaned and dried.  

Causes for issues with the upper rack assembly often involve prolonged exposure to water and detergent, leading to rust or corrosion, physical damage from loading or unloading, or wear and tear from regular use.

Symptoms of a malfunctioning Upper Rack Assembly include:

  • Difficulty sliding the rack in or out
  • Rust or corrosion that can lead to stains on dishes
  • Broken or missing tines affecting the rack's ability to hold dishes securely

This OEM LG part is also compatible with some Kenmore models.

Do-It-Yourself Stories from Customers like You Both the upper and lower racks had damaged and some rust and the silverware rack had cracked from age/use   Lothair L. • Waukesha , WI • September 08, 2015

The new racks just slide into the slot spaces easily. The new items seem redesigned better than the factory original. Read more

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$287.49
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Dishwasher Dishrack Roller And Axle
Genuine Lg part
By: Lg
Part Number: 4581DD3002A

Dishwasher dishrack roller and axle assembly. Installs on upper or lower dish rack to allow smooth gliding. Replace if broken, cracked, or missing.

Do-It-Yourself Stories from Customers like You The old part was no longer available from the manufacturer   Bertha S. • Bonney Lake , WA • April 20, 2014

Thanks to Appliance Parts Pros, who took the time and made the effort, they found me a replacement part for my dishwasher. Read more

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$22.56
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Dishwasher Impeller Assembly
Genuine Lg part
By: Lg
Part Number: 5911ED3003A

Fixes weak spray or slow draining caused by a worn impeller. Restores water circulation in your dishwasher. Moderate DIY repair with video guide.

Do-It-Yourself Stories from Customers like You My lg lds5540st was squealing during the wash cycle   David D. • Alabaster , AL • April 21, 2017

I replaced the dishwasher circulation motor. I also replaced the impeller assembly, although it turns out that was not necessary. Actually replacing the motor was straightforward: Remove the upper and lower racks. Turn off the breaker and water supply. Disconnect power, supply water and drain hose. Slide out the dishwasher. Inside the dishwasher, unscrew the two screws holding on the bottom rotating sprayer and remove the sprayer, unscrew the one screw holding the little metal bracket and... Read more

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$20.32
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