Mmv5277bas Parts

This high-voltage magnetron capacitor stores and delivers the pulse of energy the microwave magnetron needs to generate heat. Replacing a failed unit restores proper high-voltage function so the oven can heat reliably. What it does:

• Stores and releases high-voltage energy to the magnetron during cooking cycles.
• Works with the oven's diode and transformer to produce microwave energy.
• A failed capacitor can cause no heat, weak heating, or a blown fuse/circuit interruption.
• Designed for the microwave high-voltage assembly; handle as a high-voltage component.

• Disconnect power and unplug the appliance before service.
• Discharge the capacitor with an insulated tool before touching terminals.
• Verify this part number matches your appliance before ordering.

This thermistor is a refrigerator temperature sensor that monitors internal air temperature so the control board can regulate cooling. Replaces a failed sensor to help restore accurate temperature readings and more consistent cooling. What it does:

• Senses internal refrigerator temperature and sends a variable resistance signal to the control board
• Helps the control system cycle the compressor and fans correctly for stable temperatures
• Commonly replaced when refrigerator runs too cold, too warm, or has irregular cooling cycles
• Can address temperature-error codes or defrost control issues when the sensor is faulty

• Disconnect power to the appliance before inspecting or replacing the sensor
• Handle the sensor and wiring harness carefully to avoid damage to the probe or connectors
• Install in the original sensor mounting location and secure wiring away from moving parts

This base is the appliance's lower cabinet section that supports internal components and helps stabilize the unit. It restores a solid foundation so the appliance sits level and protects internal parts from floor contact and debris. What it does:

• Provides structural support for the appliance's internal assemblies and controls
• Helps stabilize the unit and reduce excessive vibration or rocking
• Protects wiring, motors and other components from contact with the floor
• A damaged or cracked base can cause noisy operation, misalignment, or uneven sitting

• Disconnect power (and gas if applicable) before beginning any repair
• Follow the OEM service manual for disassembly and reassembly steps
• Replacement may require removing the cabinet and/or drum; having a second person helps with lifting and alignment
• Inspect and reuse original fasteners only if undamaged; replace any worn mounting hardware

This fan wheel spins inside the appliance to move air through the system, restoring proper airflow for heating and cooling. It replaces a cracked, worn, or unbalanced wheel to reduce noise and improve performance. What it does:

• Circulates air through the appliance to support heating, cooling, or ventilation
• Helps maintain consistent temperatures and prevents motor overload from restricted airflow
• Reduces rattling or grinding noise caused by a warped or broken wheel
• Restores proper airflow when the original wheel is damaged or missing

• One fan wheel

• Disconnect power to the appliance before starting any repair
• Access may require removing an access panel or cabinet components; follow the manufacturer's service instructions
• Inspect the blower housing and mounting for damage; replace any damaged clips or fasteners
• Ensure the wheel spins freely and is seated correctly on the motor shaft before reassembly

This replacement power cord supplies electricity to the appliance so it can run safely and reliably. It replaces a worn, frayed or damaged cord to restore steady power and reduce risk of electrical problems. What it does:

• Delivers mains power from the outlet to the appliance's internal wiring
• Replaces cords with visible damage, exposed wires, or broken plug ends
• Stops intermittent power or complete loss of power caused by a damaged cord
• Helps prevent arcing and poor connections when original cord has failed

• Always disconnect power at the wall or breaker before inspecting or replacing the cord
• Secure the cord strain relief and ensure wire connections are tight and correctly routed

This air deflector redirects airflow inside the appliance to help maintain proper circulation and protect components from direct airflow. Replacing a damaged deflector restores intended air paths and can reduce uneven temperature or noise. What it does

• Guides air where the manufacturer intended to ensure even circulation.
• Protects nearby components from direct airflow and wear.
• Helps reduce symptoms like uneven cooling/heating or unusual airflow noise.
• Works as a passive airflow-management part — no electrical connection.

• Disconnect power to the appliance before starting any repair.
• Handle the deflector carefully to avoid cracking plastic tabs during removal or installation.
• Installation typically requires basic hand tools; for exact steps.

This main damper assembly regulates airflow between compartments to help maintain proper refrigerator temperatures. It replaces a worn or stuck damper to restore controlled air delivery for more consistent cooling performance. What it does:

• Controls the amount of cold air flowing from the freezer into the fresh-food compartment
• Helps stabilize internal temperatures when opening/closing doors or during mode changes
• Commonly fails by sticking open or closed, causing warm fresh-food temps or overcooling
• Works with the refrigerator's control system to modulate airflow based on demand

• Disconnect power before beginning any service to avoid electrical shock
• Handle the damper flap and cable/gear gently to prevent damage during installation
• Inspect surrounding seals and mounting points; secure all fasteners and reconnect any harnesses
• After installation, restore power and verify proper operation across temperature settings

Color: Black

The Outer Door is an OEM part for Whirlpool built-in microwaves. It forms a sturdy outer shell that protects interior electronics and acts as the interface point when accessing the cooking chamber.

Causes of a bad outer door can include dents or cracks developing over time from repeated opening and closing, especially if subjected to excessive force. Surface damage from aggressive cleaning chemicals is also possible. 

Symptoms of a bad outer door include: 

• Gaps that compromise the sealed cooking environment
• Difficulty latching or having the door remain shut securely  
• Scratches, chips, or cracks that ruin the aesthetic
• Restricted access to interior components

Color: Black

Replacing with a genuine Whirlpool outer door ensures a perfectly fitted, long-lasting barrier. Compatible brands include KitchenAid, Jenn-Air, and select Kenmore built-ins.

This motor cover shields the motor assembly and nearby components from debris and accidental contact. Replacing a cracked or missing cover restores proper protection and can reduce noise caused by objects rubbing against moving parts.

• Covers the motor area to block dust, grease, and foreign objects
• Helps secure the motor housing and maintain proper clearances
• Can quiet rattling or scraping caused by a loose or broken cover
• Common signs: cracked, warped, or missing cover; scraping/rattling from the motor area; visible motor exposure

• Disconnect power at the breaker or unplug the appliance before servicing
• Access the motor compartment per your model's service/installation information
• Retain and reuse the original screws/fasteners unless damaged
• Do not overtighten fasteners to avoid cracking the new cover; verify clearances before testing

Color: White

This support is a replacement mounting bracket that helps secure internal components and keeps assemblies aligned for proper operation. Installing a new support can reduce movement, rattling, or misalignment of the attached parts. What it does:

• Holds and stabilizes a component or assembly inside the appliance
• Prevents excess movement that can cause vibration or noise
• Keeps parts aligned to ensure smooth mechanical operation
• Helps maintain proper spacing between connected parts to avoid wear

• Disconnect power (and water, if applicable) before beginning any repair
• Use appropriate hand tools; avoid overtightening mounting screws
• Wear safety gloves and eye protection; handle sharp sheet-metal edges with care

This choke cover is a small protective trim piece that secures and shields the choke assembly on compatible Whirlpool appliances. It helps prevent debris contact and keeps internal components properly positioned. What it does:

• Protects the choke assembly from dust, debris and incidental contact
• Keeps wiring and small components held in place to reduce movement
• Helps eliminate rubbing or rattling caused by loose trim pieces
• Visible damage or missing cover can lead to exposed components and increased wear

• One choke cover

• Disconnect power to the appliance before beginning any repair
• Basic hand tools are typically required; follow the service manual for access steps
• Handle plastic trim carefully to avoid cracking; do not force or modify the part