Skip to Content
  • 2 Day Quick Delivery! 2 Day Quick Delivery!
  • 365 Day Return Policy! 365 Day Return Policy!
  • 15 million satisfied customers 15 million satisfied customers
  • Over 2.1 Million Parts In Stock Over 2.1 Million Parts In Stock
  • Repair ForumFree Tech Support!
  • Google Trusted Store Google Trusted Store

Mmv4203bd00 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.

More
Best Seller
Microwave Air Damper Assembly
Genuine Whirlpool part
By: Whirlpool
Part Number: W10843943

Air damper assembly for over-the-range microwaves. Installs at top exhaust opening to control airflow direction. Replace if cracked, missing, or broken.

Do-It-Yourself Stories from Customers like You Microwave vented into kitchen   Henry T. • Brighton , CO • April 21, 2014

Bought a new home with microwave venting into kitchen. Ordered damper assembly needed to vent through the wall to the outside. Removed microwave, followed directions in original installation instructions, turned fan over, cut hole in wall, installed wall cap and replaced oven. Problem solved. Read more

More
$60.52
Compare At:
$72.02
You Save:
$11.50

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Microwave Upper Cabinet Template
Genuine Whirlpool part
By: Whirlpool
Part Number: W10190018

Template guides installation of over-the-range microwaves, ensuring correct cabinet alignment and hole placement. Replace if missing or damaged during install.

Do-It-Yourself Stories from Customers like You One of the mounting nuts fell into the cabinet   Steven R. • Boulder Creek , CA • February 04, 2018

Watched a You tube video, showed how to remove bottom, unhook wiring, then proceed to top case. Once removed, case is turned upside down so the capture nut can be installed. Part fit perfectly and BAM, done. Case refitted and finished. Part arrived in 2 days. Great service. Read more

More
$8.62
Compare At:
$10.10
You Save:
$1.48

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Microwave Thermal Fuse
Genuine Whirlpool part
By: Whirlpool
Part Number: W11707984

Microwave has no power or won't heat? A blown thermal fuse is often the cause. This safety part protects against overheating. DIY repair in 30 minutes.

Do-It-Yourself Stories from Customers like You Door latch broke also causing the fuse to blow   James M. • Ocean View , NJ • April 28, 2017

It is difficult (if not impossible) to remove the electronic switches from the hard plastic latches. I replaced all three switches and both the upper and lower latches I also replaced the main 20 amp ceramic fuse which blew out when the latch/switches failed. Read more

More
$36.95
Compare At:
$43.60
You Save:
$6.65

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Microwave High Voltage Diode
Genuine Samsung part
By: Samsung
Part Number: DE91-70063D

Microwave not heating food? A faulty high voltage diode disrupts power conversion. Common DIY repair requiring discharge safety and multimeter testing.

This part fixes the following symptoms
  • No heat
See more...
Do-It-Yourself Stories from Customers like You My maytag mmv4205bab over the cooktop mounted microwave stopped heating without any warning the unit sounded like it was working but now the sound was noticeably louder i had replaced a magnetron   Lee B. • Lakewood , CA • February 27, 2015

After dismounting the unit from its wall-hanging bracket, the most tedious part of the repair was removing over a dozen screws holding the cover in place from the top, bottom, and both sides. Fortunately, I had placed the unit on a bench that allowed me to slide the unit allowing access to the screws on the bottom edges of the unit. Always discharge the capacitor before continuing to work on the unit by discharging the capacitor by shorting the contact without the diode to ground. Access to the... Read more

More
$28.27
Compare At:
$33.64
You Save:
$5.37

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Microwave Door Switch
Genuine Samsung part
By: Samsung
Part Number: 3405-001033

Fix a microwave that runs but won't heat or won't start when door closes. This door switch is a common fix—most DIYers replace it in 15 minutes.

Do-It-Yourself Stories from Customers like You Microwave would say "cook" and timer would count down but turntable would not rotate and magnetron did not turn on   Kathy K. • Athens , GA • January 12, 2016

Checked the three door switches; used ohm meter to see if there was resistance or if a switch was bad. 2 out of 3 switches showed resistance with the ohm meter. The last one tested (of course the last one) NO (normally open) did not show resistance; I.e. the ohm meter reading did not change when the switch was depressed. Appliance parts pros was the only company that had the same model number I was looking for (SZW-V16-FD-63). I ordered the relay switch, 2 days later it arrived (regular... Read more

More
$22.95
Compare At:
$27.08
You Save:
$4.13

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Microwave Diode
Genuine Whirlpool part
By: Whirlpool
Part Number: W11256462

Microwave won't heat but hums loudly? The diode regulates power to the magnetron. Test with multimeter—reads one direction only. Moderate DIY repair.

Do-It-Yourself Stories from Customers like You Loud hum/buzz & no heat   Greg S. • Springfield , VA • November 30, 2015

Replacing a magnetron in my particular 9-year-old microwave (a microwave/hood combination) was not a simple “plug & play” operation. That is why I am placing this in the slightly difficult area. First, it takes 2 people to remove the microwave from the top of the stove. Next the main outer panel need to be removed. After that, 2 sheet metal panels need to be removed in order to expose the high voltage components for testing. Always discharge the high voltage capacitor first before doing... Read more

More
$26.95
Compare At:
$32.07
You Save:
$5.12

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Grease Range Hood Microwave Filter 5-15/16" X 13-3/8" X 3/32"
Genuine Whirlpool part
By: Whirlpool
Part Number: 6802A

Grease filter for range hoods and over-the-range microwaves. Dimensions: 5-15/16" x 13-3/8" x 3/32" (5.9375 x 13.375 x 0.09375). Rectangle shape. Captures grease from cooking air. Replace when clogged, discolored, or every 6-12 months.

Do-It-Yourself Stories from Customers like You My microwave vent grill kept falling on my head when i opened my microwave   Christopher D. • Kernersville , NC • February 23, 2015

Well, I gotta say I was happy to find you still had parts for almost 20 year old microwaves. The microwave itself worked fine, so I hated to have to buy a new one, but I just couldn't take being hit in the head anymore; and my fix of using string and wire to tie it to the surrounding cabinets was unsightly to say the least. I'm glad I did some research and found this part - all I had to do was pop it in place and now the vent grill is secure. Problem solved with minimal cost. Read more

More
$27.37
Compare At:
$32.57
You Save:
$5.20

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Microwave Door Interlock Spring
Genuine Whirlpool part
By: Whirlpool
Part Number: W10156812

This small spring is part of the door interlock system in your microwave, providing tension to the safety switch mechanism that detects whether the door is properly closed. It ensures the microwave will only operate when the door is securely latched. Replace this spring if the microwave does not start, runs with the door open, or the door interlock switch is not engaging correctly.

Do-It-Yourself Stories from Customers like You Microwave would not work, bad door switch.   Gregory P. • Houston , TX • December 10, 2018

Checked switch with a voltmeter, determined the switch was bad. Ordered a new switch....watched a short how to you-tube video.....and from there.....it was fixed. Read more

More
$11.78
Compare At:
$14.02
You Save:
$2.24

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Microwave Door Interlock Switch
Genuine Whirlpool part
By: Whirlpool
Part Number: W10211974

This door interlock switch is a safety micro switch that detects whether the microwave door is properly closed before allowing the unit to operate. It is a small, snap-action switch mounted near the door latch mechanism. Replace this switch if the microwave won't start, runs with the door open, or blows a fuse when the door is closed.

Do-It-Yourself Stories from Customers like You Door latch broke also causing the fuse to blow   James M. • Ocean View , NJ • April 28, 2017

It is difficult (if not impossible) to remove the electronic switches from the hard plastic latches. I replaced all three switches and both the upper and lower latches I also replaced the main 20 amp ceramic fuse which blew out when the latch/switches failed. Read more

More
$46.35
Compare At:
$55.16
You Save:
$8.81

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Microwave Temperature Control Thermostat
Genuine Samsung part
By: Samsung
Part Number: DE47-20034A

Microwave won't power on or turn on? Failed thermostat causes complete power loss. This safety part protects against overheating. DIY repair in 30 minutes.

Do-It-Yourself Stories from Customers like You Smh1816s samsung microwave went completely dark no controls no lights receptacle good   John S. • Olathe , KS • March 17, 2015

I attempted to diagnose the four thermostats/thermal switches in the microwave....two right behind the control panel, one on top of the cooking cabin, and one under a metal shroud above the magnetron. While checking continuity with a voltmeter, i questioned one of them behind the control panel and the one above the magnetron. I then noticed a burn mark on the plastic connector sleeve for the one above the magnetron. I took a scrap piece of 14 gage copper wire and beat the ends flat with a... Read more

More
$26.95
Compare At:
$32.07
You Save:
$5.12

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Cooking Tray Coupler
Genuine Whirlpool part
By: Whirlpool
Part Number: W10435116

The Cooking Tray Coupler is an OEM part replacement part for Whirlpool microwaves. It securely connects the two halves of the microwave cooking tray together, allowing for easy placement and removal of food items. 

Symptoms of a bad cooking tray coupler include:

  • The cooking tray separating into two loose pieces that do not stay connected
  • Food sliding off or falling through gaps in the disconnected tray halves 
  • Inability to use the microwave cooking tray properly

Causes of a bad coupler can be cracks, breaks, or wear over time that compromises its connecting ability. 

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

Note: This coupler is compatible with the glass tray that has the 3 half circles that engage the coupler. In some cases, the factory used a tray that has 3 triangles. For that coupler, use part# W11245707.

Do-It-Yourself Stories from Customers like You Microwave turntable motor overheated and melted tray coupler   Terry H. • Columbia , MO • May 31, 2018

Obtained the replacement motor and tray coupler from Appliance Parts Pro. Video of the typical replacement was very helpful to show what to expect and how to replace the motor and coupler. The removal of the bottom plate was held in place by several phillips screws. The motor was attached with two torx screws. The electric connection clips to the motor required needle nose pliers to pull them off. The tray coupler was simple to install after the motor was secured and bottom plate was replaced.. Read more

More
$26.95
Compare At:
$31.80
You Save:
$4.85

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Microwave Magnetron
Genuine Whirlpool part
By: Whirlpool
Part Number: W10245183

Microwave not heating but runs? The magnetron generates microwave energy for cooking. Intermediate repair requiring discharge of capacitor first.

This part fixes the following symptoms
  • No heat
See more...
Do-It-Yourself Stories from Customers like You Loud hum/buzz & no heat   Greg S. • Springfield , VA • November 30, 2015

Replacing a magnetron in my particular 9-year-old microwave (a microwave/hood combination) was not a simple “plug & play” operation. That is why I am placing this in the slightly difficult area. First, it takes 2 people to remove the microwave from the top of the stove. Next the main outer panel need to be removed. After that, 2 sheet metal panels need to be removed in order to expose the high voltage components for testing. Always discharge the high voltage capacitor first before doing... Read more

More
$154.95
Compare At:
$189.88
You Save:
$34.93

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Microwave Vent Grille
Genuine Whirlpool part
By: Whirlpool
Part Number: W10259232

Stainless finish vent grille covers the front top vent opening on your microwave. Restores a clean, finished look when the original is cracked or broken.

Do-It-Yourself Stories from Customers like You Wife pulled grill off microwave very flimsy design   Gary S. • Boise , ID • October 18, 2014

Replaced with new grill-vent.perfect fit. Used same screws. Read more

More
$88.95
Compare At:
$106.74
You Save:
$17.79

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Microwave Surface Light Lens Cover
Genuine Whirlpool part
By: Whirlpool
Part Number: W10240330

This is a light lens cover that fits over the surface light bulb housing on the underside of an over-the-range microwave. It protects the light bulb and diffuses light onto the cooktop below. Replace this cover if it is cracked, yellowed, missing, or if it no longer snaps securely into place.

Do-It-Yourself Stories from Customers like You Light not going on and cover missing.   Jerry J M. • Monona , WI • August 02, 2020

When the new bulb didn't want to go in, I felt around and realized the base of the old bulb was still in there. With some effort I got it out and new bulb in, Light cover fit fine, but did not come with a screw to hold it in. That would have been helpful. Read more

More
$10.71
Compare At:
$12.74
You Save:
$2.03

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Microwave Thermal Cutoff Thermostat
Genuine Samsung part
By: Samsung
Part Number: DE47-20059B

Microwave won't heat or is completely dead? A failed thermal cutoff thermostat often causes no power or heating. DIY repair in 30-45 minutes.

This part fixes the following symptoms
  • Won't start
See more...
Do-It-Yourself Stories from Customers like You No power to microwave nothing worked   Harold C. • Manchester , NH • December 20, 2014

Watched u-tube Read more

More
$29.21
Compare At:
$34.47
You Save:
$5.26

IN STOCK
Ships Monday Guaranteed
Add to Cart
Best Seller
Microwave Door Switch (Interlock Microswitch)
Genuine Whirlpool part
By: Whirlpool
Part Number: WP3405-001034

This door interlock microswitch detects when the microwave door is fully closed and allows the unit to run only under safe conditions. Replacing a worn switch restores reliable starting and consistent operation tied to the door latch.

  • Monitors the door-latch position and completes the safety interlock circuit when the door is closed
  • Helps prevent operation with the door open
  • Common symptoms: microwave won't start or stops when the door is moved; requires pushing/jiggling the door to run
  • Contributes to "runs but no heat" or light/fan behavior that changes as the door is opened/closed
What's included: One door interlock microswitch Install notes:
  • Unplug the microwave before service; internal high-voltage components can retain a dangerous charge
  • Access the switch at the door-latch assembly; transfer wires one at a time to the new switch to maintain correct positions
  • Ensure the actuator aligns with the door latch and that the switch clicks freely when opening/closing the door
  • After reassembly, test with a microwave-safe cup of water to ensure proper operation
Note: Many microwaves use multiple door switches; each is sold individually.

This part fixes the following symptoms
  • No heat
See more...
Do-It-Yourself Stories from Customers like You Microwave would not heat had power   Robert W. • Sanford , FL • May 28, 2015

Utilized a YouTube video to isolate the door switches as the issue. These were easily identified following the isolation process and simple testing. I ordered a door switch and secondary switch on Monday and they arrived on Tuesday via FedEx. 15 Minutes to re-install, re-assemble cover and the unit was working fine. A very good experience with parts availability and shipping. Read more

More
$62.56
Compare At:
$74.45
You Save:
$11.89

IN STOCK
Ships Monday Guaranteed
Add to Cart
  • 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