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Ffmv1645st 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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Mounting Nut Kit
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304509436

This mounting nut kit secures a threaded connection or component inside your appliance, keeping it tight and stable during operation. Replacing a worn or stripped nut restores a solid hold and helps prevent leaks, rattling, and poor performance. What it does:

  • Fastens a component or fitting to its mating surface, maintaining proper alignment
  • Restores grip when original threads are stripped, cracked, or worn
  • Helps prevent vibration-related loosening during cycles
  • Can resolve symptoms such as a loose/wobbly assembly, rattling noises, seepage at the joint, or visible thread damage
What's included:
  • One mounting nut kit
Install notes:
  • Disconnect power; shut off water supply if the joint carries water
  • Support the mating component while installing to avoid strain on plastic parts
  • Start threads by hand to prevent cross-threading; tighten only until snug—do not overtighten
  • Inspect any related gasket/O-ring and replace if worn or damaged

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Microwave High-Voltage Diode
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304509479

Microwave won't heat? The high-voltage diode converts AC to DC for the magnetron. When it fails, your microwave runs but produces no heat. Moderate repair.

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Microwave Door Handle
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304509434

Replacement door handle for microwaves. Attaches to the microwave door for opening and closing access. Needed when original is cracked, broken, or worn.

Do-It-Yourself Stories from Customers like You Broken handle   Robert O. • Dripping Springs , TX • May 22, 2026

Self Read more

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Microwave Mounting Kit
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304503192

Mounting kit secures your microwave to the cabinet or wall with brackets and hardware. Replace if original parts are missing, damaged, or worn.

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Microwave Turntable Tray
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304509437

Glass turntable tray for microwave cooking surface. Replaces broken, cracked, or shattered trays. Rotates during cooking for even heating.

Do-It-Yourself Stories from Customers like You Needed to replace broken tray and support ring.   James D. • Buffalo , NY • February 20, 2022

I received the tray in fine condition. The support ring arrived in a soft shipping pouch, and it was broken into two pieces. After notifying APPC I made repairs o the ring with toothpicks, sewing thread and glue. I really wanted my microwave back in operation. I hope you will send the replacement support ring in a box instead of a soft shipping pouch. Read more

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Microwave Thermostat
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304509469

Microwave won't start or stopped working during use? A failed thermostat often causes complete shutdown. This temperature switch is replaceable DIY.

Do-It-Yourself Stories from Customers like You No display didn't do anything.   Craig B. • Brooksville , FL • December 21, 2017

Looked at schematic on AppliancePartsPros.com. Checked power, power filter, next component in line was the thermostat, found thermostat with signs of overheating, thermostat was open, replaced the thermostat, micro works perfect. Took longer to get it out than diagnose it. Read more

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Microwave Turntable Coupler
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304509439

Connects the motor to the glass turntable tray in your microwave. Replace if cracked, broken, or worn to restore smooth tray rotation and proper cooking.

Do-It-Yourself Stories from Customers like You The turntable stopped working in my frigidaire microwave in my rv   Anita F. • Red Bluff , CA • March 22, 2015

We ordered the motor and coupler for the turntable. I could not believe how fast it was delivered. I ordered the parts on a Thursday afternoon, and the parts were delivered to me on Friday morning! Great customer service!! Also, the site is very user-friendly. It was very easy to find the parts we needed for the repair. My husband repaired it in less than 15 minutes. Keep up the great customer service - it is so refreshing to deal with a company like this!! Read more

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Microwave Door Handle - White
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304509610

White door handle for opening and closing the microwave door. Durable plastic construction. Replace if handle is cracked, loose, or broken off.

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Microwave Noise Filter
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304509452

This noise filter is an electronic component that suppresses electromagnetic interference generated by the microwave during operation. It is typically mounted near the power input and helps prevent the microwave from causing static or disruption to nearby electronics. Replace it if the microwave trips a breaker, won't power on, or causes interference with other household devices.

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Thermostat (Temperature Control)
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304509449

This temperature control thermostat regulates refrigerator temperature to keep food safely chilled. It replaces a faulty control to restore proper cycling and temperature stability for the fresh food compartment. What it does:

  • Senses cabinet temperature and opens/closes the compressor/coolant circuit to maintain set temperature
  • Can stop excessive cooling or prevent the compressor from running continuously when failing
  • Commonly used when the refrigerator is too warm, too cold, or runs nonstop
  • Works with mechanical temperature dials and capillary-sensor assemblies on compatible units
What's included: One thermostat Install notes:
  • Disconnect power to the appliance before servicing to avoid shock
  • Handle any attached capillary sensor tube gently; avoid kinks or sharp bends
  • Verify correct mounting and electrical connections; match terminals to the old thermostat

Do-It-Yourself Stories from Customers like You Microwave power lost   Amanda H. • Ofallon , MO • June 24, 2014

Purchased this thermostat for $13 and spent 6 minutes fixing the microwave. This was after I was quoted $162 to fix the microwave from a service technician. I explained that I wasn't paying $162 to fix a $200 microwave and they offered to dispose of the microwave for free--yeah, right! $13 and 6 minutes later, my microwave was fixed with this part from AppliancePartsPros.com. Thank you! Read more

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Microwave Vent Cover
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304509490

Replace a broken or missing microwave vent cover to restore proper ventilation and maintain airflow. Directs exhaust air to release heat and moisture.

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Microwave High Voltage Capacitor
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304509478

This high voltage capacitor works with the diode and magnetron to generate the microwave energy needed to heat food. It stores and releases electrical energy to nearly double the voltage output from the transformer. Replace this capacitor if the microwave runs but does not heat, makes a loud buzzing noise, or if the unit trips a breaker - always discharge the capacitor before handling as it can retain a dangerous charge even when unplugged.

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Microwave Electronic Control Board
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304525309

Fix a microwave that won't start, has no display, or ignores settings with this electronic control board. Restores all functions and user controls.

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Microwave Fan Motor
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304509471

This is a cooling fan motor used in a microwave oven to circulate air and prevent internal components such as the magnetron and electronics from overheating. It typically runs during cooking and may continue running briefly after the microwave shuts off. Replace this motor if the microwave is overheating, shutting off unexpectedly, or if the fan is noisy, runs sluggishly, or doesn't spin at all.

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Microwave Mounting Plate
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304509481

Secures internal components to the microwave chassis. Replace if cracked, broken, or missing to restore proper support and stop rattling or misalignment.

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$42.30
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Microwave Door Latch Tension Spring
Genuine Frigidaire part
By: Frigidaire
Part Number: 5304521953

Coiled tension spring for microwave door latch mechanisms. Restores proper door closure when original spring is stretched, broken, or missing.

Do-It-Yourself Stories from Customers like You Microwave blew line fuse   Gerald G. • St. Louis , MO • August 05, 2019

It took a long time to determine the problem but eventually I discovered that the plastic bracket (latch hook) that held the three door-switches showed appreciable wear from repeated door openings and closings. This wear stopped the door from sealing properly and the door switch safety mechanism blew the line fuse. I replaced the worn bracket (AP6230612) as well as the plastic latch mechanism (AP4553585) on the door that engages this bracket (and of course the fuse too) and the microwave now... Read more

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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