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Wm3400cw 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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Washer Outer Tub Gasket
Genuine Lg part
By: Lg
Part Number: 4036ER4001F

Seals between front and rear outer tubs to prevent water leaks during wash cycles. Replace if you notice leaking or during bearing replacement. Confirm fit with your model number.

Do-It-Yourself Stories from Customers like You LG washer machine; bearing issues.   Juan B. • Johnston , RI • September 14, 2021

I replace both bearings and tub gasket. Read more

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$13.26
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Washer Motor Rotor Bolt
Genuine Lg part
By: Lg
Part Number: 4040FR4051C

Washer won't spin or makes grinding noises? The motor rotor bolt secures the rotor to the motor shaft. Requires a 17mm socket for installation.

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$15.95
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Washer Water Inlet Valve
Genuine Lg part
By: Lg
Part Number: 5220FR2006Z

Fix no hot water, slow filling, or screaming noise during fill. This washer water inlet valve controls water flow into the tub. Moderate DIY repair.

Do-It-Yourself Stories from Customers like You Lg model wm3400w washing machine   Rob W. • Newport , NH • May 14, 2026

Replaced the broken parts with new ones. Read more

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$65.74
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Hose,Pump
Genuine Lg part
By: Lg
Part Number: 5214FR3188G

The Pump Hose is an OEM replacement part for LG washing machines. It is a flexible tube that connects the pump assembly to the internal tub and spins through the detergent dispenser area. The pump hose is responsible for circulating and removing water during the wash and rinse cycles. 

Symptoms of a bad pump hose include:

  • Leaks or water not fully draining from the washer 
  • Slow or inefficient filling and draining of water  
  • Pump running loudly or continuously
  • Wet areas under or around the washer

Causes of failure can be cracks or splits developing in the tubing from repeated bending and flexing over time, or blockages restricting water flow.

It is also compatible with some Kenmore models.

Do-It-Yourself Stories from Customers like You Drain hose cracked   Tommy W. • Pensacola , FL • August 18, 2015

REMOVED BACK PANEL, USED PLYERS TO REMOVE CLAMP, PULLED OLD HOSE OFF, REVERSED PROCEDURE TO INSTALL NEW HOSE. TOTAL TIME ABOUT 10 MINUTES. Read more

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$40.95
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Washer Dispenser Inlet Hose
Genuine Lg part
By: Lg
Part Number: 5214ER4001B

Directs water from inlet valve to detergent dispenser in LG washers. Replace if hose is cracked, leaking, won't stay attached, or damaged from wear.

Do-It-Yourself Stories from Customers like You Little black specks in the dispenser tray calicum build up and rusted clamps on rear of dispenser   Paul B. • San Diego , CA • January 30, 2017

I figured after 10.5 years that it might be time to replace the dispenser hoses because I was noticing black stuff in the dispenser trays. I replaced two or the four hoses and clamps on the far left side and for good measure the hot water inlet valve. The inlet valve was okay but the screen had all kinds of crap in there that I couldn't clean out so now I have an extra solenoid just in case one of the others fails. While I was at it I removed the dispenser and cleaned the calcium build up on... Read more

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Valve Assembly,Inlet
Genuine Lg part
By: Lg
Part Number: 5220FR2006W

The Hot Water Valve is an OEM part for LG washing machines. It regulates the flow of hot water into the wash tub during the appropriate cycles. The valve allows hot water to enter the wash tub to help wash clothes thoroughly and effectively at warmer temperatures.

Causes of a bad hot water valve include mineral or lime buildup inhibiting proper operation, worn internal components due to age and use, or damage from freezing during winter months.

Symptoms of a bad hot water valve include:

  • Only cold water entering the wash tub, even on hot cycles
  • Fluctuating hot water temperature during cycles
  • Leaks from the hot water valve area
  • Inability to select hot water temperature settings

This LG part is also compatible with some Kenmore models.

Do-It-Yourself Stories from Customers like You Lg washer tub collecting water while unit off   Brian B. • Oviedo , FL • March 03, 2026

Determined it to be the water inlet valve assembly. Found part on AppliancePartsPros. Good price and fast delivery. Luckly the part was easy to get to and replace with no issues. Read more

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$65.74
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Washer Rotor Assembly
Genuine Lg part
By: Lg
Part Number: AHL72914401

Fix LE error codes or grinding noises during spin with this washer rotor assembly. Pairs with stator to drive drum rotation. DIY repair in 30 minutes.

Do-It-Yourself Stories from Customers like You LE code   Kevin O. • Lynn , MA • May 15, 2021

Technician wanted $700. I was able to fix it myself for around $300 in about a half hour with the great and helpful customer service of appliancepartspros.com. Parts arrived on time. Nice to know there is a company that really cares and they know there stuff. Read more

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Washer Door Locker Hook
Genuine Lg part
By: Lg
Part Number: MFG62579002

Fix a washer door that won't close or latch properly. This locker hook engages the lock mechanism to secure the door during cycles and prevent error codes.

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$43.48
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Washer Thermistor Seal
Genuine Lg part
By: Lg
Part Number: 4036FR4050A

Seals the temperature sensor where it passes through the washer tub. Replace if worn or leaking to prevent water damage. Confirm fit with your model.

Do-It-Yourself Stories from Customers like You Worn out bearings   Linda B. • San Diego , CA • November 23, 2015

After watching the video carefully and taking notes for step-by-step dismantling of the LG washer, I took it apart methodically placing each item on a table in the order removed. I was able to remove and replace the bearings with no problems following the tips and tricks. The spider did not seem to be in bad shape but since I had a new one, it seemed reasonable to replace it as well, but it was difficult to extract the old one from the drum. The bolts are assembled with weld glue, so it is a... Read more

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Washer Motor Stator Bolt
Genuine Lg part
By: Lg
Part Number: 4011FA4353B

Secures the stator to the motor assembly in your washer. Replace if bolt is stripped, spinning freely, or missing to restore proper motor stability.

Do-It-Yourself Stories from Customers like You The washer sounded like a jet plane when it went through the spin cycle very loud noise   Lane C. • Pleasant Garden , NC • February 24, 2015

I originally thought the washer had a bad bearing, but once I got it disassembled it the spider arms were broken. This required the replacement of the tub assembly. While replacing the tub I replaced all of the water bellows. The parts came quickly, the live chat and videos were very helpful. This washer has to be completely disassembled to replace the drum, so mark all the screw locations, tag and bag everything and take lots of pics. It was a very rewarding project and hundreds of dollars... Read more

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Washer Drain Pump Motor Assembly
Genuine Lg part
By: Lg
Part Number: EAU63743803

Fix washer not draining or making howling/grinding noise during drain cycle. This DC motor powers the drain pump. Moderate DIY repair, 30-45 minutes.

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Washer Pressure Switch Assembly
Genuine Lg part
By: Lg
Part Number: EBF63534901

Washer won't fill properly or overfills? The pressure switch monitors water levels and signals when to stop filling. Moderately easy DIY repair.

Do-It-Yourself Stories from Customers like You Corroded and stuck open water inlet valve   Aaron A. • Kingwood , TX • March 22, 2026

Replaced water inlet valve Read more

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$53.21
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Washer Hose Clamp
Genuine Lg part
By: Lg
Part Number: 4860FR3092C

Secures washer hoses to pumps, tubs, and drain fittings to prevent leaks. Replace when weakened, rusty, or damaged to maintain tight connections.

Do-It-Yourself Stories from Customers like You Loud noise during spin cycle   Steven S. • Celina , OH • March 10, 2019

I started by watching the video and it was very helpful. I would make one suggestion. On our model the weights on the tub sit very close to the front gasket. It is much easier to put the gasket on the tub before you put the weights on. Also, since the washer was tore apart, I replaced the hoses and seals and shocks since the machine is about 8 years old. The shocks made a huge difference. It spins like it did when it was new. Thanks for the video, it was very helpful. Read more

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Screw (Drawing)
Genuine Lg part
By: Lg
Part Number: 1SZZER4002A

This Screw (drawing) is a factory fastener used to secure appliance panels and components. Replacing a stripped, corroded, or missing screw restores a tight fit, reduces vibration, and helps keep assemblies correctly aligned.

  • Secures panels, brackets, and mounting points as specified by the manufacturer
  • Replaces screws that are lost, damaged, corroded, or stripped
  • Helps address rattling, vibration, or loose-fitting parts caused by missing hardware
  • Maintains proper alignment and stability of the assembly
What's included: One screw
  • Disconnect power and, if applicable, shut off gas/water before servicing
  • Match the screw to its original location; start threads by hand to avoid cross-threading
  • Use the correct driver; tighten snugly without over-torquing into metal or plastic
  • Refer to your model's parts diagram to correct location and quantity

Do-It-Yourself Stories from Customers like You Lg washer/dryer combo unit shook upper counter balance weight loose damaging the mount lugs on the tub cover and tore the tub gasket   Christine V. • Saluda , VA • March 28, 2020

The upper counter-balance weight mount design is a poor design to begin with. It started to rattle loose approximately 5yrs into the 8yrs that we've owned it. As it would start to loosen up (as evidenced by the loud banging noise exhibited during operation); I'd shut it down, pull the top off, remove the weight (it was almost always half rattled off at this point), wrap the mount lugs with friction tape (the plastic lugs were being worn down/chaffed by the balance weight), put the weight back... Read more

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Washer Detergent Dispenser Box
Genuine Lg part
By: Lg
Part Number: AAZ75735901

Fix leaking from under the detergent dispenser with this washer dispenser box. Solves cracks or breaks that compromise the dispenser structure.

Do-It-Yourself Stories from Customers like You Leaking from under laundry detergent dispenser   Nanette F. • Barnegat , NJ • May 16, 2025

A new deteerrgent dispenser. Read more

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$36.95
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Washer Drain Pump Assembly
Genuine Lg part
By: Lg
Part Number: AHA75693425

Washer won't drain or leaves water in tub? This drain pump assembly removes water at cycle end. Common fix for drainage issues. Moderate difficulty.

Do-It-Yourself Stories from Customers like You EO   Irene B. • Smithville Flats , NY • January 28, 2022

Ordered a new drain motor pump. Read more

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$125.63
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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