4387503 Refrigerator Defrost Thermostat – Universal Replacement
4387503 Refrigerator Defrost Thermostat – Universal Replacement
Gmarty 4387503 Bimetal Defrost Thermostat – Universal Refrigerator Replacement Part
Keep your refrigerator running at peak performance with the Gmarty 4387503 Bimetal Defrost Thermostat. This precision clip-on thermostat monitors evaporator temperature during the defrost cycle and automatically shuts off the defrost heater once ice and frost have cleared — protecting your appliance and maintaining consistent freezing temperatures.
Why Replace Your Defrost Thermostat?
Common signs that your defrost thermostat needs replacing include:
- Water leaking from the refrigerator or freezer
- Inconsistent temperatures — running too warm or too cold
- Excessive ice or frost buildup inside the unit
- Appliance running continuously without cycling off
Key Features
- Universal Compatibility: Direct replacement for part number 4387503 and a wide range of compatible part numbers
- Bimetal Design: Accurately senses temperature changes to protect the evaporator during the defrost process
- Enhanced Durability: Improved design with updated, stable characteristics and high reliability
- Easy Installation: Clip-on design for quick, hassle-free fitting — no special tools required
- Quality Construction: Made from durable metal for long-lasting performance
Specifications
| Part Number | 4387503 |
| Material | Metal |
| Color | White |
| Size | 2.6 × 2.8 cm |
| Country of Origin | Made in China |
Compatible Replacement Part Numbers
This thermostat replaces the following part numbers: 2149641, 2149643, 2163894, 2172694, 2182380, 2183072, 2221677, 4343917, 586213, 61002113, AH371255, EA371255, PS371255, R0950042
What's in the Box
- 1 × Refrigerator Defrost Thermostat (Part #4387503)
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Learn more: Nutrition.gov on cooking and food safety
Frequently Asked Questions
Q: What refrigerator models is the 4387503 defrost thermostat compatible with?
A: The 4387503 bimetal defrost thermostat is a universal replacement designed to work with a wide range of refrigerator models. It replaces numerous part numbers including 2149641, 2149643, 2163894, 2172694, 2182380, 2183072, 2221677, 4343917, 586213, 61002113, AH371255, EA371255, PS371255, and R0950042. We recommend checking your appliance's model number and existing part number before purchasing to confirm compatibility.
Q: How do I install the 4387503 defrost thermostat?
A: Installation is straightforward thanks to the clip-on design. Simply clip the thermostat directly onto the evaporator coils in your refrigerator, replacing the existing thermostat. No special tools are required. If you're unsure, consult your refrigerator's service manual or a qualified appliance technician.
Q: How do I know if my defrost thermostat needs to be replaced?
A: The most common signs include unusual ice buildup inside the freezer compartment, water leaking from the unit, inconsistent temperature regulation, or the appliance running non-stop. Replacing a faulty defrost thermostat with this direct-replacement part can quickly restore normal operation.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.