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Defrost Bimetal

Part Number: AP3108454
MFG Part Number: 4387503
Made by: Whirlpool
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$32.36 $7.07

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Satisfaction Rating (1)

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30 Questions & Answers

Genuine Whirlpool part. Whirlpool brands include Whirlpool, Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and others. See all items in Freezer Defrost Thermostat, Sensor and Refrigerator Defrost Thermostat, Sensor.
Whirlpool also makes various appliance models for Sears / Kenmore.

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Cross Reference Information

Part Number 4387503 (AP3108454) replaces 2149641, 2149643, 2163894, 2172694, 2182380, 2183072, 2221677, 4343917, 586213, 61002113, AH371255, EA371255, PS371255, R0950042.

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The defrost bimetal (thermostat) needed to be replaced Patricia S. • Lexington, KY • May 30, 2014
Appliance: Roper Refrigerator RT18AKXJW00

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Repair Time Estimate

15-30 minutes 

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Repair Video

How to Replace Defrost Bimetal #4387503

Step by step instructions on how to replace a Defrost Bimetal #4387503 for Freezer, Refrigerator made by Whirlpool, KitchenAid, Roper, Kenmore, Estate, Amana. Note: This video is intended to give you the general idea of the part replacement procedure. Your appliance may differ depending on the manufacturer and model.


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Most Interesting

My Refrig. is freazing up in the back of freazer, starting to run all the time, is it the Bimetal defrost that controles this or the module part 2169337? If its the Module where is it located?

E. Davis for Model Number 106.9750383


3 people found this answer helpful.

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My ice maker will make ice after I thaw it out. After awhile it seems to freeze up and starts to make ice very slowly about a half a bucket and quits making ice. It has frozen water in the tray and some times the ice fingers are frozen in the ice. Could this be the bi-metal sensor (thermostat) gone bad in the ice maker?

David for Model Number GSS30C6EYY03


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Our Whirlpool refrigerator condensor fan runs constantly. Is this normal?

Mathew for Model Number ET1MTKXKQ00


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Latest Questions

My frig recently stop being cold. I thought it might be the thermostat. I changed that but it still doesn't get cold. When I change the temperature gauge, I do hear the motor running. I'm wondering if I change the Defrost Bimetal if the frig will get cold again?

Pete for Model Number ET1MTKXKQ00


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My coil has started to freeze up and the blower fan does not come on at all. Does the defrost thermostat control the fan too?

Vance for Model Number AMANA


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Hello. I have the refrigerator model 106.70844102. three times in different days at the morning I found the refrigerator totally defrosted and after cleaning it started to work again normally. I checked the power cord and plug and the power outlet and all was OK. I wonder if you can help in finding the problem.

Jose P for Model Number 106.70844101


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