Refrigerator Heating-Temperature 4387503 Refrigerator Bimetal Defrost Thermostat for Whirlpool Kenmore Refrigerators
4387503 refrigerator bimetal defrost thermostat with red and brown wires in BlueStars branded packaging.
4387503 refrigerator bimetal defrost thermostat replacement with wide brand compatibility chart.
Refrigerator symptom guide for 4387503 bimetal defrost thermostat replacement compatible with Whirlpool and Kenmore.
Close-up of 4387503 refrigerator bimetal defrost thermostat with metal housing and red and brown wires.
4387503 refrigerator bimetal defrost thermostat with tube clip and two wire leads for Whirlpool and Kenmore.
Family smiling in front of a refrigerator for BlueStars DIY refrigerator repair promotion.
4387503 refrigerator bimetal defrost thermostat with red and brown wires in BlueStars branded packaging.
4387503 refrigerator bimetal defrost thermostat replacement with wide brand compatibility chart.
Refrigerator symptom guide for 4387503 bimetal defrost thermostat replacement compatible with Whirlpool and Kenmore.
Close-up of 4387503 refrigerator bimetal defrost thermostat with metal housing and red and brown wires.
4387503 refrigerator bimetal defrost thermostat with tube clip and two wire leads for Whirlpool and Kenmore.
Family smiling in front of a refrigerator for BlueStars DIY refrigerator repair promotion.

4387503 Refrigerator Bimetal Defrost Thermostat for Whirlpool Kenmore Refrigerators

0.00
$8.79
Save 11% $9.84
$8.79
In stock
Fast Delivery Delivery options available at checkout
30 Day Returns Return Policy

Secure and trusted checkout with

  • Mastercard
  • Visa
  • American Express
  • Discover
  • JCB
  • Diners Club
CONFIRM THIS PART FITS
Enter appliance or equipment model number to verify compatibility with this part

4387503 Refrigerator Bimetal Defrost Thermostat

Key Features

  • Clips onto the refrigerator evaporator coil
  • Monitors evaporator temperature
  • Acts as a safety device to prevent overheating during the defrost cycle
  • Turns off the defrost heater after ice and frost have melted

Replaces / Cross-Reference Part Numbers

  • WP4387503
  • AP6009317
  • PS11742474
  • PS371255
  • AH371255
  • EA371255
  • 4343917
  • 61002113
  • 2149641
  • 2149643

Compatibility & Fitment

  • Designed for use with major refrigerator brands including Whirlpool, Kenmore, and Speed Queen.
  • Compatible with numerous specific refrigerator and freezer models.

When to Replace

  • Refrigerator is too warm
  • Freezer section is too cold
  • Excessive frost buildup on evaporator coils
  • Appliance fails to complete a defrost cycle
  • Refrigerator runs continuously

Installation Tips

  • Disconnect the appliance from its power source before beginning the repair.
  • Access the evaporator coil, typically located behind a panel in the freezer compartment.
  • The thermostat clips directly onto the evaporator tubing.
  • Ensure the replacement part is securely attached in the same position as the original.
4387503 Refrigerator Bimetal Defrost Thermostat for Whirlpool Kenmore Refrigerators 1
4387503 Refrigerator Bimetal Defrost Thermostat for Whirlpool Kenmore Refrigerators 2
  • 4387503 Refrigerator Bimetal Defrost Thermostat for Whirlpool Kenmore Refrigerators 1

    PERFECT FIT

    BlueStars 4387503 Refrigerator Bimetal Defrost Thermostat replaces part numbers: 2149641, 2149643, 2163894, 2172694, 2182380, 2183072, 2221677, etc.
  • 4387503 Refrigerator Bimetal Defrost Thermostat for Whirlpool Kenmore Refrigerators 2

    PREMIUM QUALITY

    4387503 Refrigerator Bimetal Defrost Thermostat is made of strong & durable materials that prevent cracking and failure during installation and use.
  • 4387503 Refrigerator Bimetal Defrost Thermostat for Whirlpool Kenmore Refrigerators 3

    SAVING SOLUTION

    Enjoy the great feeling when your refrigerator works properly like before - BlueStars brings DIY solutions to help you deal with any trouble.
  • 4387503 Refrigerator Bimetal Defrost Thermostat for Whirlpool Kenmore Refrigerators 4

    SIMPLE INSTALLATION

    The 4387503 Refrigerator Bimetal Defrost Thermostat is very simple that anyone can do.
COMPLETE KIT

COMPLETE KIT

It features a tube clip, 2 wire leads, bare wire ends with no wire nuts included
PREMIUM QUALITY

PREMIUM QUALITY

This thermostat is manufactured from high-grade material that ensures high durability and promotes efficiency
ECONOMICAL DIY REPAIR

ECONOMICAL DIY REPAIR

Enjoy the comfort that our Thermostat brings into your refrigerator - BlueStars provides DIY solutions to help you deal with any troubles

Compatible Models

Locate the model number of your appliance or equipment on the manufacturer's label and use it to check compatibility before ordering

Loading compatible models…

Type
Bi-Metal Defrost Thermostat (Clip-On)
Temperature Rating
L43-27°F | Opens @ 43°F / Closes @ ~18°F
Wire Length
~5 inches
Mounting
Clip-on — snaps directly onto evaporator coil tubing

FAQs

This thermostat is compatible with a wide range of refrigerators manufactured by Whirlpool, Kenmore, Sears, KitchenAid, Roper, Estate, Jenn Air, Magic Chef, Maytag, Inglis, Crosley, Hoover, Amana, International, and Caloric.
This part replaces numerous OEM numbers, including WP4387503, 4387503, 343917, 61002113, PS11742474, AP6009317, AP3108454, PS371255, 2149641, 2149643, 2163894, 2172694, 2182380, 2183072, 2221677, 4343917, R0950042, and WP4387503VP.
If your refrigerator is not cooling properly, the freezer is building up excessive frost on the evaporator coils, or the refrigerator is not entering the defrost cycle, the bimetal thermostat may be faulty. If the thermostat fails to close, the defrost heater will not turn on, leading to ice buildup that restricts airflow.
You can test the thermostat using a multimeter. At room temperature, the switch should be open (no continuity). When cooled to below freezing (typically using a spray refrigerant or by placing it in a freezer), the switch should close, showing continuity. If it does not show continuity when cold, the thermostat is defective and needs to be replaced.
Replacing this thermostat is a standard repair that typically takes 30 to 60 minutes. You will need basic hand tools, such as a nut driver or screwdriver, to remove the interior back panel of the freezer to access the evaporator coils. Always unplug the refrigerator before beginning any work.
Yes. While you have the freezer panel removed, it is a good time to inspect the defrost heater and the defrost timer or control board. If the heater element shows signs of damage or has no continuity, it may also need to be replaced to restore proper defrost functionality.