Parts for Lg LSC27921ST: Refrigerator Compartment Parts

The LG Refrigerator Water Filter is an OEM Replacement Part. It is designed to improve the quality of water and protect refrigerators and ice machines from sediment deposits. This NSF-Certified filter effectively reduces iron and particulates. It also preserves beneficial minerals like fluoride. The filter measures 5.6 inches high and 3.3 inches in diameter.

It is installed by removing the top shelf and pulling the old filter downward. Then turn it counter-clockwise, and replace it with the new filter aligned in a horizontal position. To ensure the best performance and the removal of trapped air and contaminants, it's recommended to flush the dispenser with 2.5 gallons of water in alternating cycles. If your model includes a water filter indicator, press and hold the Filter or Reset button for 5 seconds after installation. With a lifespan of 6 months and a 500-gallon capacity, this filter provides both quality and longevity.

This duct assembly is the insulated airflow duct used inside the dryer to keep exhaust airflow contained and help maintain efficient drying. It replaces damaged or worn insulation to restore proper airflow routing and safety. What it does:

• Channels heated air from the heater to the exhaust while the insulation helps limit heat transfer to the cabinet.
• Prevents airflow leaks that can cause longer dry times or uneven drying.
• Limits heat and noise transfer from the internal duct to the exterior cabinet.
• Replace if the insulation is torn, compressed, or the duct is damaged — common signs include longer drying cycles, unusual heat near the cabinet, or rattling.

• Disconnect power (and shut off gas supply for gas dryers) before starting any repair.
• Access typically requires removing outer panels or the drum; retain all fasteners for reassembly.
• Inspect surrounding ductwork and remove accumulated lint before installing the new assembly.

The Guide Rail is an OEM replacement part for LG refrigerator shelves. Running horizontally inside the refrigerator cavity, these durable rails smoothly guide shelf movement during height adjustment. This rail is for the left side.

Causes of faulty guide rails can include dents or damage occurring from heavy loads, as well as plastic degradation from prolonged use. 

Symptoms include:

• Shelves difficult to pull out fully or reinsert  
• Scratching or binding noises heard during adjustments
• Shelves unable to securely lock into place

Note: Per factory, Roller 4580JA3034A and screw 1SBZJA3004K no longer come with guide rail.

This OEM LG replacement is also compatible with select Kenmore refrigerators.

The Guide Rail is an OEM part for LG refrigerators. It is designed to support and guide the movement of refrigerator drawers, ensuring they slide smoothly in and out. This component helps in maintaining the proper alignment and functionality of the drawers, making it easier to access stored items.

Causes of a bad guide rail include wear and tear over time, excessive force or weight applied to the drawers, or accidental impact that causes cracks or bends in the rail. Ensuring the guide rail is in good condition is crucial for the smooth operation of refrigerator drawers.

Symptoms of a bad guide rail include:

• Difficulty in opening or closing drawers
• Drawers not staying aligned or securely in place
• Noticeable wobbling or uneven movement of the drawers
• Unusual noises when moving the drawers

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

Note: Per factory, Roller 4580JA3034A and screw 1SBZJA3004K no longer come with guide rail.

This tray assembly replaces a damaged or worn vegetable/crisper tray to restore secure storage and proper organization in the refrigerator. Fits the refrigerator's crisper area to keep produce supported and contained. What it does:

• Holds fruits and vegetables in the crisper compartment for organized storage.
• Provides a stable surface so drawers and produce slide smoothly.
• Replaces cracked, warped, or otherwise damaged trays that can allow items to shift or fall.
• Helps maintain proper airflow around stored produce when installed correctly.

• Disconnect power or follow appliance safety procedures before working inside the refrigerator.
• Remove any produce and the old tray; inspect the drawer tracks or rails for debris or damage.
• Align the replacement tray with the guides and slide into place until it seats securely.

This lamp cover protects and diffuses the appliance interior light for safer, even illumination. It restores proper light distribution while shielding the bulb from spills, bumps, and debris. What it does:

• Covers and protects the interior lamp assembly to prevent direct contact with the bulb
• Diffuses light for more even illumination inside the compartment
• Helps prevent dirt, moisture, and food particles from reaching the lamp
• Commonly replaced when cracked, discolored, or missing, which can cause glare or uneven lighting

• One lamp cover only

• Disconnect power to the appliance before servicing to avoid shock
• Handle the cover carefully to avoid cracking; use gloves to keep it clean
• Reinstall using the existing clips or screws; ensure correct orientation and secure fit
• If lamp or mounting hardware is damaged, replace those components as well

This snack tray assembly is the replacement interior sliding shelf that organizes small food items and keeps them accessible in the refrigerator. It restores a secure, easy-to-slide snack storage area to help reduce clutter. What it does:

• Provides a dedicated sliding shelf for storing snacks, condiments, or small containers
• Restores smooth sliding and proper alignment if the original tray is cracked, warped, or stuck
• Helps contain spills and keeps items organized on the refrigerator door or shelf area
• Replaces damaged or missing tray components that prevent normal use

• Unplug the appliance or shut off power before removing or installing interior parts to avoid electrical hazards
• Remove nearby items and shelves for easier access; handle the tray gently to avoid damage
• Align rails or guides and slide the tray into place until it clicks or seats fully

This replacement nut is a simple fastener used to secure internal components and panels. It restores proper attachment where a loose or missing nut causes vibration, noise, or parts to shift. What it does:

• Secures components, brackets, or panels in place to maintain appliance stability
• Prevents parts from loosening during operation, reducing rattles and vibration
• A missing or damaged nut can allow movement that leads to noise or improper alignment
• Use as a direct hardware replacement when the original nut is lost or worn

• Disconnect power (and water, if applicable) before accessing internal parts
• Start threads by hand to avoid cross-threading; tighten with the appropriate wrench or socket
• Replace if threads are stripped or the nut is damaged
• Refer to the parts diagram for the correct mounting location

The Lower Hinge Assembly is an OEM part for LG refrigerators. It is responsible for supporting the refrigerator door and allowing it to open and close smoothly. The hinge assembly ensures the door stays aligned and securely in place, preventing cold air from escaping and maintaining the efficiency of the appliance.

You should replace the lower hinge assembly if it becomes faulty. Causes of a bad lower hinge assembly can include wear and tear over time, excessive force or weight on the door, or damage from accidental impacts.

Symptoms of a bad lower hinge assembly include:

• Difficulty in opening or closing the door
• Door not sealing properly
• Squeaking or grinding noises when the door moves
• Door misalignment

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

A momentary push-button switch that restores reliable button control on the appliance console. Replaces a worn or non-responsive push switch so the control board receives a clear input when the button is pressed. What it does:

• Sends a momentary electrical signal to the control board when pressed
• Replaces broken, stuck, or intermittently working push buttons
• Helps resolve symptoms like no response from the console, intermittent button function, or a physically damaged button
• Functions as the user input for single-press commands

• One momentary push switch

• Disconnect power before servicing to avoid shock or injury
• Access usually requires removing the control panel or console; use appropriate screwdrivers
• Note connector orientation and gently unplug wire harness—do not pull on wires

The LG Refrigerator Water Filter is an OEM Replacement Part. It is designed to improve the quality of water and protect refrigerators and ice machines from sediment deposits. This NSF-Certified filter effectively reduces iron and particulates. It also preserves beneficial minerals like fluoride. The filter measures 5.6 inches high and 3.3 inches in diameter.

It is installed by removing the top shelf and pulling the old filter downward. Then turn it counter-clockwise, and replace it with the new filter aligned in a horizontal position. To ensure the best performance and the removal of trapped air and contaminants, it's recommended to flush the dispenser with 2.5 gallons of water in alternating cycles. If your model includes a water filter indicator, press and hold the Filter or Reset button for 5 seconds after installation. With a lifespan of 6 months and a 500-gallon capacity, this filter provides both quality and longevity.

Note: 90 degree elbow coupler (Fits 5/16" diameter tubing on each end) For 1/4" elbow connector, order part# 4932JA3009A.

Note: 90 degree elbow coupler (Fits 1/4" diameter tubing on each end) For 5/16" elbow connector, order part# 4932JA3009B.

The Water Line Union is an OEM part for LG refrigerators. This component connects sections of the water line, ensuring a secure and leak-free passage of water to the refrigerator's icemaker and water dispenser. It is an elbow tube union connector, which connects two tubes at a 90-degree angle.

Causes of a bad water line union can include wear and tear from frequent use, damage from high water pressure, or deterioration due to mineral buildup and age. A compromised union can lead to water leaks and disruption in the water supply.

Symptoms of a bad Water Line Union include:

• Water leaks around the connection points
• Reduced water flow to the icemaker or water dispenser
• Puddles or moisture near the refrigerator
• Unusual noises from the water line

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

The Refrigerator Temperature Sensor is an OEM part for LG refrigerators. This sensor monitors the temperature inside the refrigerator and communicates with the control board to maintain the optimal cooling environment.

Common causes of failure include wear and tear over time, electrical issues, or exposure to moisture. A malfunctioning sensor can lead to inaccurate temperature readings, resulting in improper cooling or freezing.

Symptoms of a bad refrigerator temperature sensor include:

• Inconsistent refrigerator or freezer temperatures
• Food spoiling faster than usual
• Refrigerator running continuously or not running at all
• Error codes displayed on the control panel

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