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Ldf7810st 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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Float Assembly
Genuine Lg part
By: Lg
Part Number: 4769DD2001A

The Float Assembly is an OEM replacement part for LG dishwashers. It is a sensor located inside the dishwasher that monitors water levels during wash cycles. The float assembly precisely indicates water levels to the control system to determine adequate water is available throughout the cleaning and rinsing functions. Proper water level detection is crucial for achieving sparkling clean dishes.

Causes of a faulty float include mineral buildup on sensors overtime, cracks or leaks developing, and damage to electrical wiring from impacts.

Symptoms of a bad float assembly include:

  • Incomplete or inefficient wash cycles due to low water levels
  • Water remaining in the bottom of the tub after a cycle
  • Drainage issues related to inaccurate water level readings
  • Error codes related to improper filling and draining of water

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

Do-It-Yourself Stories from Customers like You Main wash motor froze and then burned out the controller too i had to buy a new motor so the completely assembled sump with all motors and valves and heating element was a real steal for +$10   Mike K. • Fort Collins , CO • May 01, 2015

I bought a new controller first and installed it. The exact replacement controller was no longer available and I had to modify two AC connectors that changed from 3 pins with two wires to two pins with two wires. This was not expected but I made it work just fine by getting the three pin connectors on the cable to fit the two pin by breaking out the center web in the board two pin and then shaving off the raised key plastic on the wires. Then on power up, I found that the wash motor did not... Read more

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Upper Spray Arm
Genuine Lg part
By: Lg
Part Number: 5249DD2001A

The Upper Spray Arm is an OEM part for LG dishwashers. This part is located at the top of the dishwasher tub, responsible for spraying water and detergent onto the upper rack of dishes during the wash cycle.

Causes of a bad Upper Spray Arm can include mineral buildup or debris clogging the spray holes, physical damage from impact or foreign objects, or wear and tear over time.

Symptoms of a faulty Upper Spray Arm include:

  • Incomplete or ineffective washing of dishes on the upper rack
  • Water not spraying evenly or not spraying at all from the upper arm
  • Clogged or blocked spray holes
  • Loud noises or grinding sounds during the wash cycle

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

Do-It-Yourself Stories from Customers like You Top spray arm not spinning in lg dishwasher   Mark F. • San Carlos , CA • February 02, 2020

I replaced the upper nozzle guide, nozzle shaft and upper spray arm. I also replaced the pump gasket for good measure. Top rack dishes had not been cleaning properly. I first removed the filter assembly to inspect the main pump from above. It was clogged but after cleaning and reassembly I observed that while middle and bottom spray arms were changing position, the upper spray arm was not. I confirmed that water was flowing through the upper spray arm by placing some empty yogurt pots on a... Read more

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Upper Spray Arm Pivot Shaft
Genuine Lg part
By: Lg
Part Number: 4370ED3006A

The Upper Spray Arm Pivot Shaft is an OEM part for LG dishwashers. This part allows the upper spray arm to rotate and distribute water evenly throughout the upper rack during the washing cycle.

Causes of a bad part can include wear and tear over time, damage from foreign objects, or improper installation or alignment.

Symptoms of a bad Upper Spray Arm Pivot Shaft include:

  • The upper spray arm not rotating or spinning
  • Poor water coverage and cleaning performance in the upper rack
  • Loud grinding or squeaking noises coming from the upper rack area

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

Do-It-Yourself Stories from Customers like You Top spray arm not spinning in lg dishwasher   Mark F. • San Carlos , CA • February 02, 2020

I replaced the upper nozzle guide, nozzle shaft and upper spray arm. I also replaced the pump gasket for good measure. Top rack dishes had not been cleaning properly. I first removed the filter assembly to inspect the main pump from above. It was clogged but after cleaning and reassembly I observed that while middle and bottom spray arms were changing position, the upper spray arm was not. I confirmed that water was flowing through the upper spray arm by placing some empty yogurt pots on a... Read more

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Lower Spray Arm (Nozzle Assembly)
Genuine Lg part
By: Lg
Part Number: AGB32598301

This lower spray arm (nozzle assembly) mounts at the bottom of the tub and spins to deliver pressurized wash water across dishes. Replacing a cracked or clogged arm restores even spray coverage and helps resolve poor cleaning results.

  • Distributes wash water from the pump across the lower rack area
  • Rotates to provide even spray coverage and rinsing
  • Replaces warped, cracked, or clogged arms that reduce cleaning or cause noise
  • Common symptoms: dishes not getting clean, spray arm not turning, visible damage or blockages
What's included: Lower spray arm assembly Install notes:
  • Disconnect power at the breaker; open the door and remove the lower rack
  • Release the old arm from the center hub (turn/unsnap retainer) and lift off
  • Clear debris from the hub and filter area; seat the new arm fully and verify free rotation
  • Restore power and run a short cycle to proper spray action

Do-It-Yourself Stories from Customers like You Bottom dish spray was not turning and cleaning dishes   Ken Z. • Blaine , WA • January 10, 2017

Replaced the parts per my order Read more

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Bushing (Dishwasher)
Genuine Lg part
By: Lg
Part Number: 4830ED4001B

This small sleeve bushing supports a pivoting or rotating joint in your dishwasher, providing a smooth bearing surface. Replacing a worn bushing helps restore quiet operation and protects mating parts from further wear. What it does

  • Provides a low-friction surface between a shaft/pin and bracket
  • Helps maintain proper alignment and reduces wobble at the joint
  • Can quiet squeaks or grinding caused by wear
  • Replacing a cracked or flattened bushing can improve smooth movement
What's included
  • 1 bushing
Install notes
  • Disconnect power and shut off water before servicing
  • Support the door or component attached to the joint to relieve tension
  • Note orientation; transfer any spacers/washers in the same order
  • Inspect the mating pin/shaft for wear and replace related parts if damaged

Do-It-Yourself Stories from Customers like You Missing brackets and screw hole cover   Brian S. • Ashland , MO • March 15, 2016

Thanks to LG NOT sending the parts THEY say are included with the dishwasher, I had to buy them in order to install the appliance. I sure hope the LG appliance performs better than their customer service. Very simple fix....bought the EXACT items needed from AppliancePartsPros.com and in just a matter of two days, had the parts needed. Amazing! Excellent experience. The fix was attaching the brackets to the cabinet and screwing it to the countertop. Also just popping the screw covers... Read more

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Gasket (Dishwasher), 1 Piece
Genuine Lg part
By: Lg
Part Number: 4986DD3003A

This gasket creates a watertight seal between mating parts in the dishwasher's water system. Replacing a worn or damaged seal helps stop leaks during cycles and maintains proper wash performance. What it does:

  • Seals the joint between components such as the sump, pump housing, or inlet assemblies
  • Prevents water leakage under pressure during fill, wash, and drain
  • Helps maintain spray pressure by reducing internal bypass
  • Common symptoms include water on the floor or in the base pan, and a flattened, cracked, or brittle old gasket
What's included:
  • One gasket
Install notes:
  • Disconnect power and turn off the water supply before servicing
  • Access the gasket location and remove any retaining hardware
  • Remove the old gasket and clean both sealing surfaces thoroughly
  • Seat the new gasket evenly without twisting; tighten fasteners/clamps uniformly and run a test cycle to check for leaks

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Thermistor Holder (Dishwasher), Single
Genuine Lg part
By: Lg
Part Number: 4930DD3002A

This thermistor holder secures the temperature sensor in place inside the dishwasher, ensuring accurate water temperature readings for proper wash and dry performance.

  • Holds the thermistor securely in the sump/tub area
  • Helps the control accurately monitor wash water temperature
  • A loose or missing holder can cause temperature-related wash issues
  • Common symptoms include temperature errors or poor cleaning/drying when the sensor isn't properly positioned
What's included: 1 thermistor holder Install notes:
  • Disconnect power and turn off water supply before servicing
  • Access the sensor location from the tub/sump area; note original orientation
  • Transfer the thermistor into the new holder and snap the holder into place
  • Inspect the sensor wiring and seals while reassembling

Do-It-Yourself Stories from Customers like You LG dishwasher not cleaning well.   Bt P. • Milwaukee , WI • January 24, 2023

Followed the LG owner's manual instructions for cleaning the wash "arms". After that was complete the lower arm wouldn't operate. The filter assemble was caked with calcium, so decided to replace it and the lower spray arm and the "Holder" as your catalog described it. Removal and replacement were easy. The exploded parts diagrams on your website were very helpful. Read more

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Door Latch And Lock Assembly (Dishwasher)
Genuine Lg part
By: Lg
Part Number: 4026DD3001A

This door latch and lock assembly secures the dishwasher door and signals the control that it's safely closed. Replacing a worn latch restores firm door closure, a reliable seal, and consistent cycle operation. What it does:

  • Locks the door so cycles can start and continue without interruption
  • Helps compress the door gasket for a proper, leak-resistant seal
  • Sends a door-closed signal to the control
  • Common symptoms: won't start with the door shut, door won't latch or pops open, cycle pauses when jostled, water leaking at the door edge
What's included:
  • One door latch/lock assembly
Install notes:
  • Disconnect power at the breaker before servicing
  • Remove the inner door panel to access the latch at the top of the door
  • Note wire connector positions; move them to the new assembly and secure the latch
  • Check latch engagement with the strike and adjust alignment if needed before reassembly

Do-It-Yourself Stories from Customers like You The door latch wasn't staying shut.   Jay M. • Washington , DC • January 25, 2022

Replaced the door latch & door lock. Went really well and the dishwasher is working now. Read more

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Impeller Assembly (Dishwasher)
Genuine Lg part
By: Lg
Part Number: 5911ED3003A

This impeller assembly spins on the dishwasher's pump to move water through the system. Replacing a worn or broken impeller restores proper water flow, helping maintain wash performance and reducing noise from the pump area. What it does:

  • Moves water through the dishwasher's pump system for circulation and cleaning
  • Helps maintain correct water flow and spray pressure to the spray arms
  • Typical failure signs: poor cleaning or weak spray, unusual grinding/humming from the sump, or slow/no draining depending on which impeller has failed
  • Physical clues include damaged/broken blades or a loose fit on the motor shaft
What's included:
  • 1 impeller assembly
Install notes:
  • Disconnect power and turn off the water supply before servicing
  • Remove the lower rack and filters to access the pump/sump; follow your model's service information
  • Note the impeller's orientation; transfer any reusable seals or hardware from the original as required
  • After reassembly, check for leaks and verify the pump spins freely before running a test cycle

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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Sump Gasket (Dishwasher)
Genuine Lg part
By: Lg
Part Number: MDS58387601

This dishwasher sump gasket seals the joint between the sump assembly and the tub to prevent leaks and maintain wash performance. Replace it if the old seal is worn, flattened, cracked, or damaged to stop water escaping beneath the unit.

  • Creates a watertight seal where the sump attaches to the tub
  • Helps prevent water leaks from the base of the dishwasher
  • Supports proper circulation and overall wash performance
  • Common failure signs: puddles under the unit, leaks during a cycle, or a visibly torn/deformed gasket
What's included: One sump gasket Install notes:
  • Disconnect power and turn off the water supply before servicing
  • Access the sump from inside the tub (remove lower rack, spray arm, filters, and sump cover) or from below, depending on model
  • Clean mating surfaces; install the new gasket evenly without twists or gaps
  • Reassemble and run a short cycle to check for leaks

Do-It-Yourself Stories from Customers like You Leaky lg dishwasher   Tom B. • Perrysburg , OH • October 09, 2015

I ordered a tub seal to fix a gasket that let go in our LG LDS4821BB. Once I tore it apart to get the gasket out (little trouble) I also found what has made this DW stink for the last year. I needed to also replace the filter unit in the bottom of the tub and clean the heater area. I ordered the filter the same day I got the gasket. Both arrived WITHIN 48hrs of my order. Wow!! What more can you ask for? Great prices too. Both parts were replaced by removing a total of 12 screws and easy... Read more

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Switch,Micro
Genuine Lg part
By: Lg
Part Number: EBF64375202

The Micro Switch is an OEM part for LG dishwashers. It plays a crucial role in detecting when the door is securely closed prior to starting a cycle. This important safety feature prevents accidental exposure to hot water, detergent, and chemicals. 

Causes of a bad micro switch include degradation from years of repeated use, debris interfering with mechanisms, or damage from attempts to force or slam the dishwasher door closed.

Symptoms of a bad micro switch include:

  • Cycles failing to start despite a closed door
  • Hot water or steam visible escaping when running 
  • The dishwasher not detecting the closed door position
  • Error codes displayed related to door position sensors

This OEM LG part is also compatible with Sears/Kenmore. Replacing only when truly faulty helps ensure safe and reliable dishwasher function.
 

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Holder
Genuine Lg part
By: Lg
Part Number: 4930DD3003A

Color: blue. It measures about 3 inches wide by 1 inch high.

Do-It-Yourself Stories from Customers like You Main wash motor froze and then burned out the controller too i had to buy a new motor so the completely assembled sump with all motors and valves and heating element was a real steal for +$10   Mike K. • Fort Collins , CO • May 01, 2015

I bought a new controller first and installed it. The exact replacement controller was no longer available and I had to modify two AC connectors that changed from 3 pins with two wires to two pins with two wires. This was not expected but I made it work just fine by getting the three pin connectors on the cable to fit the two pin by breaking out the center web in the board two pin and then shaving off the raised key plastic on the wires. Then on power up, I found that the wash motor did not... Read more

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$11.95
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$14.34
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Blower Cover (Dishwasher)
Genuine Lg part
By: Lg
Part Number: 3550ED3011B

This blower cover mounts over the dishwasher's drying fan/vent opening to shield the blower and direct air into the tub. Replacing a damaged or missing cover helps maintain proper airflow and supports consistent drying performance.

  • Protects the blower assembly from splashes and debris
  • Channels air into the tub during the dry cycle
  • Helps maintain the vent seal to limit moisture escape
  • Common signs it's needed: poor drying results, rattling near the vent, visible cracks/warping, or moisture around the vent area
What's included: 1 blower cover Install notes:
  • Disconnect power and turn off water supply before servicing
  • Access from inside the tub; remove racks if needed
  • Note screw locations and any seal orientation; seat the cover evenly and tighten screws snugly without overtightening
  • Run a short cycle to check airflow and inspect for leaks

Do-It-Yourself Stories from Customers like You Door spring pulleys broke on our lg dishwasher   Leigh C. • Bemidji , MN • March 22, 2015

I looked up my unit and reviewed the schematic drawing online at Appliance Parts Pro. Once receiving the parts, I Pulled out the dishwasher and removed side panels - didn't even have to disconnect anything. Removed broken parts and replaced them with the new - took about 10-15 minutes start to finish. Easy cheesy! Owning LG appliances I'm thankful to have found a resource like Appliance Parts Pro! I plan to use them for all my other LG repairs because they make it so easy to find parts. Read more

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Hose Connector (Dishwasher)
Genuine Lg part
By: Lg
Part Number: 5214DD3003A

This hose connector links internal water lines inside the dishwasher and maintains a secure, leak-resistant seal for proper water flow during each cycle. Replacing a worn connector helps stop leaks and keeps cleaning performance reliable.

  • Joins internal water lines/components with a tight, reliable seal
  • Helps prevent drips and leaks at a hose connection point
  • Supports consistent water circulation through the wash system
  • Typical symptoms: puddles under the unit, moisture around the base, visible cracks/swelling at the connector, or a loose fit
What's included: 1 hose connector Install notes:
  • Unplug the dishwasher and turn off the water supply before servicing
  • Remove the toe-kick/access panel; place a towel to catch residual water
  • Note hose routing and orientation; fully seat the connector and transfer/reuse existing clamps
  • After reassembly, run a short cycle and inspect all connections for leaks

Do-It-Yourself Stories from Customers like You Leaking hose   Peter C. • New Milford , CT • July 12, 2015

We have a two year old LG dishwasher that started leaking After removing it from under the counter and laying it on its back I discovered that a mouse has chewed a hole in one of the hoses I took s pic of it sent it to APP tech dept They identified the part for me and I had it in two days Works like new again Great customer service I highly recommend them PC from Ct Read more

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Rack (Dishwasher)
Genuine Lg part
By: Lg
Part Number: 3750DD2003A

This replacement rack restores sturdy, organized loading inside your dishwasher. It helps keep dishes, glassware, and cookware securely positioned so they wash effectively without tipping, shifting, or being scratched by damaged or rusty tines. What it does:

  • Holds and organizes items during wash cycles for stable, consistent placement
  • Maintains proper spacing for spray coverage and drainage
  • Direct replacement for racks that are cracked, bent, rusted, or missing tines
  • Common signs: visible rust or flaking, broken welds, unstable sections, items tipping or not staying put
What's included:
  • 1 rack
Install notes:
  • Open the door, fully extend the rack, and remove rail end caps or stops as your model requires
  • Slide the old rack out; transfer any reusable components (such as rollers, clips, or accessory shelves) to the new rack
  • Slide the new rack onto the rails and reinstall the end caps/stops; verify smooth movement
  • Wear cut-resistant gloves; disconnect power if working near internal components or rails

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Washer (Hardware)
Genuine Lg part
By: Lg
Part Number: 1WZZDD3001A

This small hardware washer sits under a specified screw or bolt to distribute clamping force and protect mating surfaces. Replace a missing, bent, or corroded washer to restore secure fastening and proper alignment of the affected assembly.

  • Distributes load under a fastener head or nut for secure clamping
  • Helps prevent loosening and protects surfaces during tightening
  • Provides correct spacing/alignment where a washer is specified
  • Replace when the original washer is missing, bent, cracked, or corroded
What's included: 1 washer
  • Disconnect power and shut off water before servicing the appliance
  • Refer to your model's parts diagram/service manual to locate and quantity
  • Install in the original position/orientation under the correct fastener
  • Tighten per manufacturer guidance; do not overtighten

Do-It-Yourself Stories from Customers like You Dishwasher arms weren't revolving thus water wasn't getting sprayed around   Carrie B. • Atascadero , CA • January 11, 2015

I called a repairman out ($90) to diagnose problem which I was unable to figure out on my own (after tearing apart dishwasher). It was a simple $1 washer that was rotten. While I was on this website I went ahead and ordered some other gaskets too. Read more

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