[Lifetime Warranty] 4387503 Refrigerator Bimetal Defrost Thermostat Replacement - Compatible with Whirlpool & Kenmore Refrigerators - Replaces WP4387503 343917 61002113 PS11742474 AP6009317
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.
Lifetime Warranty

[Lifetime Warranty] 4387503 Refrigerator Bimetal Defrost Thermostat Replacement - Compatible with Whirlpool & Kenmore Refrigerators - Replaces WP4387503 343917 61002113 PS11742474 AP6009317

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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.
Product image 1
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  • PERFECT FIT

    PERFECT FIT

    BlueStars 4387503 Refrigerator Bimetal Defrost Thermostat replaces part numbers: 2149641, 2149643, 2163894, 2172694, 2182380, 2183072, 2221677, etc.
  • PREMIUM QUALITY

    PREMIUM QUALITY

    4387503 Refrigerator Bimetal Defrost Thermostat is made of strong & durable materials that prevent cracking and failure during installation and use.
  • SAVING SOLUTION

    SAVING SOLUTION

    Enjoy the great feeling when your refrigerator works properly like before - BlueStars brings DIY solutions to help you deal with any trouble.
  • SIMPLE INSTALLATION

    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
Brand Model Number
Replaces 2149641, 2149643, 2163894, 2172694, 2182380, 2183072, 2221677, 4343917, 586213, 61002113, AP6009317, PS11742474, R0950042, WP4387503, WP4387503VP
KitchenAid KTRC18KAAL02, KTRC18KDWH00, KTRC20KDWH00, KTRD18KDWH00, KTRP20KDWH00, KTRP20MDWH00, KTRS19KDAL00, KTRS19MDAL00, KTRS19MDWH00, KTRS20KWAL12, KTRS21MJBL00, KTRS22KAWH00, KTRS22MAAL01, KTRS22MABL10
Kenmore 106.421023, 106.42102301, 106.421043, 106.421063, 106.42106301, 106.6016299, 106.6016799, 106.6017299, 106.60172991, 106.6017799, 106.60182, 106.60182001, 106.708764, 106.9630211, 106.971828, 106.9808715, 106.9808785, 106.61899000, 106.74264401
Whirlpool 2ET18GMXJW00, 3ET16NKXBG00, 3ET16NKXBN00, 3ET16NKXBW00, 3ET18DKXAN00, 3ET18DKXAN01, 3ET18DKXAW00, 3ET18DKXAW01, 3ET18DKXBN00, 3ET18DKXBW00, 3ET18DKXXN00, 3ET18DKXXN01, 3ET18DKXXW00, 3ET18DKXXW01, 3ET18RKXYN00, 3ET18RKXYW00, 3ET18RKXYW01, 3ET18ZKXAN00, 3ET18ZKXAN01, 3ET18ZKXAW00, 3ET18ZKXAW01, 3ET18ZKXBN00, 3ET18ZKXBW00
Whirlpool 3ET22DKXAN00, 3ET22DKXAW00, 3ET22DKXBN00, 3ET22DKXBN02, 3ET22DKXBW00, 3ET22DKXBW02, 3ET22DKXDN00, 3ET22DKXDN01, 3ET22DKXDW00, 3ET22DKXDW01, 3ET22DKXWN00, 3ET22DKXWW00, 3ET22DKXYN00, 3ET22DKXYW00, 3ET22RKXZW00, 3HKGN500000, 3HKGN500001, 3HKGN500002
Whirlpool 3VET19ZKAW00, 3VET19ZKAW01, 3VET19ZKBW00, 3VET21DKAW00, 3VET21DKBW00, 3VET23DKAW00, 3VET23DKBW00, 3VET23DKDW00, 3XARG457WP00, 3XARG457WP01, 3XARG475WP00, 3XARG475WP01, 3XARG475WP02, 3XARG495WP00, 3XKVN510000, 3XKVN510001
Whirlpool 4ET18ZKXAW00, 4ET18ZKXBN00, 4ET18ZKXBW00, 4ET20ZKXBN00, 4ET20ZKXBW00, 4YET20DKAW00, 4YET20DKAW01, 4YET20DKXAN00, 6ET18DKXAW01, 6ET18RKXYW01, 6ET18ZKXAN00, 6ET18ZKXAN01, 6ET18ZKXAW00, 6ET18ZKXAW01, 6ET20DKXAN00, 6ET20DKXAW00, 6ET20RKXYW01
Whirlpool 7ET18PKXDN00, 7ET18PKXDN01, 7ET18PKXDW00, 7ET18PKXFN00, 7ET18ZKXDN00, 7ET18ZKXDN01, 7ET18ZKXDW00, 7ET1FTKXRQ00, 7ET20PKXDN00, 7ET20PKXDN01, 7ET20PKXDW00, 7ET21PKXFN00, 7ET21PKXFW00, 7ET21PKXGW00, 7ET22DMXGW00, 7MET18GKDN00, 7MET18GKFN00, 7RT18BKXEW00, 7RT18DKXFW00, 7ST21HPXLQ00, 7ST21HPXLQ01, 7ST21HPXLQ02, 7TT18AKXFW00, 7TT18DKXEW00
Whirlpool 8ET8MTKXKT01, 8ET16NKXDG00, 8ET16NKXDG01, 8ET16NKXDG02, 8ET16NKXDG03, 8ET16NKXDN00, 8ET16NKXDN01, 8ET16NKXDN02, 8ET16NKXDN03, 8ET16NKXDW00, 8ET16NKXDW01, 8ET16NKXDW02, 8ET16NKXDW03, 8ET17NKXBG00, 8ET17NKXBN00, 8ET17NKXBW00, 8ET18DKXAG00, 8ET18DKXAN00, 8ET18DKXAW00, 8ET18DKXBG00, 8ET18DKXBN00, 8ET18NKXAG02, 8ET18NKXAN00, 8ET18NKXAN01, 8ET18NKXAN02, 8ET18NKXAW00, 8ET18NKXAW01, 8ET18NKXAW02, 8ET18NKXDG00, 8ET18NKXDG03, 8ET18NKXDG04, 8ET18NKXDN00, 8ET18ZKXDN00
Whirlpool ED20DBXEB01, ET16JKXDN00, ET16JMXDN00, ET16JMXDW00, ET18DKXAN10, ET18HNXDN00, ET18HPXDW00, ET18NKXDN00, ET18NKXDN02, ET18NKXDW01, ET18NKXDW04, ET18NMXDN01, ET18TKXDN00, ET18TMXDW00, ET19DKXDB01, ET19RKXGW00, ET20DKXXN11, ET20GKXDW00, ET20NKXDN00, ET20NKXDW00, ET20NMXDN00, ET20PKXDW00, ET20PKXZW00, ET20PMXDW01, ET20TKXDW01, ET21DKXDW01, ET21DMXDB00, ET21DMXDN00, ET22DMXWW01, ET22RMXGN00, ET25DKXDN01
Whirlpool RT16VKXBL01, RT16VKXBW01, RT17DKXBL00, RT17DKXBW00, RT18AKXBW00, RT18AKXDW00, RT18BKXDN00, RT18DKXEN04, RT18HDXDN00, RT20DKXDN00, TT18AKXDW00, TT18EKRAN00, TT18HPXLQ00
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

FAQ

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.