Parts for Kenmore 721.86013010 (72186013010, 721 86013010): Interior Parts

A Tap-Tite binding-head screw used to fasten appliance panels and components where a self-tapping metal thread is required. Replaces missing or damaged fasteners to restore secure assembly and reduce vibration or rattling. What it does:

• Creates its own mating thread in thin sheet metal for a secure hold without a nut.
• Holds panels, brackets, and trim in place to prevent looseness or movement.
• Commonly used where stripped, missing, or broken screws cause rattling, misalignment, or parts that won't stay attached.
• Compatible with standard screwdrivers or nut drivers sized to the binding-head.

• Disconnect power and unplug the appliance before working on it.
• Use the correct driver bit to avoid cam-out or head damage.
• Start straight and apply steady pressure; avoid overtightening to prevent stripping the formed threads.
• If the original hole is badly damaged, assess for repair or use of a larger fastener as needed.

The Common Nut is an OEM part for LG ranges. It secures the fan blade to the motor shaft. This nut maintains the fan's stability and preventing it from becoming dislodged during use.

Causes of a bad common nut can include loosening over time due to vibration, improper installation, or damage from impact or mishandling.

Symptoms of a bad common nut include:

• Excessive noise or vibration from the fan assembly
• The fan blade becoming loose or detached, causing poor air circulation
• Potential risk of the fan blade becoming a projectile if completely detached

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

A flat washer used with the appliance's fastening hardware to distribute load and reduce wear. Helps maintain secure connections and prevents damage to mating surfaces for reliable operation. What it does:

• Provides an even bearing surface for bolts or screws to prevent pull-through
• Reduces friction and wear between fasteners and housing parts
• Helps keep fasteners tight and resists loosening from vibration
• Commonly used where a smooth, protective spacer is needed

• Verify correct location and orientation before reassembly
• Use manufacturer-recommended fasteners and torque specifications
• Power off and unplug the appliance before accessing internal components

This is the glass turntable tray for a microwave. It supports your dishes and rotates with the drive system to help food heat evenly. Replace a cracked, missing, or slipping tray to restore steady, reliable turntable rotation.

• Provides a flat, stable surface for cookware during cooking and reheating
• Sits on the roller guide and engages the center drive coupler to rotate food
• Promotes more even heating by turning food through the microwave energy field
• Typical failure signs: cracked/chipped glass, wobbling, slipping, or the tray not turning correctly

• Disconnect power before servicing and handle glass carefully
• Remove the old tray; wipe debris from the roller ring and cavity floor
• Align the tray's center hub with the drive coupler and set it on the roller ring; ensure it sits flat and spins freely
• Test rotation with a microwave-safe cup of water

This turntable assembly restores smooth rotation inside your microwave so food heats more evenly. Replace a cracked tray or worn support to eliminate wobble and scraping noises while maintaining a stable, level surface for dishes.

• Supports and rotates cookware with the drive coupler during cooking
• Promotes even heating by keeping food moving through the microwave energy
• Stabilizes the tray to reduce spills, wobble, and noise
• Replaces broken, chipped, or missing glass tray and support ring

• Disconnect power and allow the microwave to cool before servicing; handle glass carefully
• Remove old tray and ring; clean the cavity floor and turntable track
• Position the roller ring on the track; align the tray with the center coupler until it seats flat
• Test with a cup of water to ensure smooth, quiet rotation

This drive shaft transfers motor torque to the appliance drum or tub, restoring proper rotation and reducing wobble. A direct-fit replacement designed to return smooth, quiet operation when the original shaft is worn or damaged. What it does

• Connects the motor/transmission to the drum or tub so the drum can spin.
• Restores correct alignment and rotation to reduce wobbling or scraping.
• Helps stop symptoms like noisy operation, grinding, or a drum that won't turn.
• Works as the mechanical link in drive assemblies where a worn shaft prevents normal function.

• Disconnect power and water supply, and drain the appliance before beginning service.
• Access may require removing the cabinet, front panel, or tub—follow the service manual for your model.
• Use appropriate tools and follow OEM instructions for safe removal and reassembly.

A replacement glass shelf that provides a sturdy, easy-to-clean surface for storing food inside your refrigerator. Restores lost or damaged shelving to help keep items organized and stable. What it does:

• Replaces a cracked, chipped or missing interior glass shelf so food no longer sits unevenly or risks falling.
• Provides a solid, flat surface for bins, containers and loose items.
• Helps maintain proper airflow by fitting into the intended shelf supports.
• Matches original OEM fit and finish for a flush, secure installation.

• Remove all items from the surrounding area and support adjacent shelves before installing.
• Slide into existing shelf tracks until it rests securely on the supports; do not force.
• Handle with care to avoid chipping; wear gloves to reduce cut risk.
• If glass is broken, remove debris carefully and unplug the appliance before cleaning the area.

The Interlock Door Switch is an OEM part for LG microwaves. It is a safety component located on the door of the microwave designed to prevent the microwave from operating unless the door is securely closed. The interlock door switch works with the microwave's electronic control board to sense when the door is open or closed and allow or disallow operation accordingly.

Causes of a bad interlock door switch can include normal wear and tear from repeated opening and closing of the microwave door over time.

Symptoms of a bad interlock door switch include:

• The microwave runs or heats with the door open
• Error codes or diagnostic messages related to door sensors on the control board
• The microwave fails to operate even when the door is securely closed

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

This magnetron is the high-voltage tube that produces the microwave energy used to heat food in a countertop microwave. Replacing a failing magnetron restores normal heating performance and stops weak or no-heat conditions. What it does

• Generates microwave energy that heats food inside the oven cavity
• Stops microwave from heating when the tube fails or output is reduced
• May be the cause of loud humming, arcing, or burning smells during operation
• Works with the oven's high-voltage system and waveguide to deliver even cooking

• One magnetron

• Disconnect power before servicing and discharge the high-voltage capacitor; high-voltage components can be lethal
• Inspect and retain any mounting hardware, gaskets, and the waveguide cover for proper reassembly
• Do not operate the oven with the waveguide cover or protective shielding removed

Thermistor is a temperature-sensing replacement that monitors refrigerator and freezer temperatures so the control board can regulate cooling. Replacing a faulty thermistor restores accurate temperature readings and helps stabilize cooling performance. What it does:

• Senses interior/evaporator temperature and sends a signal to the control board for temperature regulation.
• Helps prevent erratic cooling, long run-times, or inconsistent compartment temperatures when operating correctly.
• Faulty thermistors can contribute to excessive frost, failed defrost cycles, or compressor cycling issues.
• Use when the existing sensor fails to report correct temperatures or the part number matches.

• Always disconnect power to the appliance before servicing to avoid shock or damage.
• The sensor is typically mounted on or near the evaporator or inside a cabinet wall; access may require removing panels or covers.
• Handle the sensor and wiring harness gently; avoid pulling on wires or bending the sensor element.

This thermostat is a temperature-sensitive safety switch used in LG microwaves. It monitors internal temperature and opens the circuit when overheating is detected to help protect components from heat damage.

• Monitors temperature at its mounting location inside the microwave
• Opens on overtemperature to interrupt power for safety
• Depending on model/location, a failed or open thermostat can cause no heat, the unit shutting off mid-cycle, or no power until it cools
• Helps prevent damage to the magnetron, cavity, and wiring due to overheating

• Unplug the microwave before service; the high-voltage capacitor can retain a dangerous charge
• Note wire positions, remove mounting screws, and install the new thermostat flat against the surface for proper heat sensing
• Reassemble and test; ensure vents and filters are clear to maintain proper airflow and prevent future overheating

The Turntable Motor is an OEM replacement part for LG microwaves. Located under the microwave cavity, it rotates the special turntable platter during cooking operations.   

Symptoms of a faulty turntable motor include:

• Turntable failing to spin or rotating unevenly during cooking  
• Abnormal noises or vibrations coming from the bottom of the unit
• Uneven cooking results along microwave perimeter 

Causes related to normal wear of internal motor workings through extended use. Damage from power surges is also possible over time.

This LG replacement part is compatible with some Kenmore models as well.

A molded air guide that channels internal airflow to improve circulation and component cooling inside the appliance. Replaces a worn or broken guide to restore designed airflow paths and reduce air leaks. What it does

• Directs and channels airflow through the appliance to support proper ventilation and cooling.
• Helps maintain consistent operating temperatures by guiding air where the manufacturer intended.
• Common symptom: reduced airflow or cooling performance, longer cycle times, or inconsistent operation.
• Common symptom: rattling or vibration if the guide is cracked, loose, or damaged.

• One air guide.

• Disconnect power (and gas, if applicable) before beginning any repair.
• Inspect mounting tabs and surrounding seals; replace any damaged fasteners to ensure a secure fit.
• Handle the plastic guide carefully to avoid cracking; align tabs and press into place until seated.
• Test operation after installation; recheck for unusual noises or airflow issues.