---
product_id: 179889293
title: "BlueStars Upgraded 4387503 Refrigerator Bimetal Defrost Thermostat Replacement - Compatible with Whirlpool & Kenmore Refrigerators - Replaces WP4387503 343917 61002113 PS11742474 AP6009317"
brand: "bluestars"
price: "466883₫"
currency: VND
in_stock: true
reviews_count: 11
category: "Blue Stars"
url: https://www.desertcart.vn/products/179889293-bluestars-upgraded-4387503-refrigerator-bimetal-defrost-thermostat-replacement-compatible-whirlpool
store_origin: VN
region: Vietnam
---

# Closes at 62°F - prevents overheating Easy clip-on install - DIY friendly Opens at 48°F - precise temp control BlueStars Upgraded 4387503 Refrigerator Bimetal Defrost Thermostat Replacement - Compatible with Whirlpool & Kenmore Refrigerators - Replaces WP4387503 343917 61002113 PS11742474 AP6009317

**Brand:** bluestars
**Price:** 466883₫
**Availability:** ✅ In Stock

## Summary

> ❄️🔥 Keep your cool with precision defrost control — never let ice cramp your style!

## Quick Answers

- **What is this?** BlueStars Upgraded 4387503 Refrigerator Bimetal Defrost Thermostat Replacement - Compatible with Whirlpool & Kenmore Refrigerators - Replaces WP4387503 343917 61002113 PS11742474 AP6009317 by bluestars
- **How much does it cost?** 466883₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/179889293-bluestars-upgraded-4387503-refrigerator-bimetal-defrost-thermostat-replacement-compatible-whirlpool)

## Best For

- bluestars enthusiasts

## Why This Product

- Trusted bluestars brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal Compatibility:** Fits top brands like Whirlpool, Kenmore, Maytag & more — no guesswork, just perfect fit.
- • **Hassle-Free Installation:** Designed for quick clip-on setup, empowering you to beat fridge icing with zero stress.
- • **Precision Temperature Control:** Maintains optimal defrost cycle between 48°F and 62°F for flawless fridge performance.
- • **Cost-Effective Repair Solution:** Save time and money by fixing defrost issues yourself instead of costly service calls.
- • **Lifetime Reliability Guarantee:** Backed by 100% lifetime protection to keep your fridge running smoothly without worries.

## Overview

The BlueStars Upgraded 4387503 Bimetal Defrost Thermostat is a premium, durable replacement part engineered to regulate defrost cycles in Whirlpool, Kenmore, and other major brand refrigerators. Operating between 48°F and 62°F, it prevents freezer icing and overheating by accurately sensing temperature changes and cycling the defrost heater. Easy to install and backed by a lifetime protection guarantee, this thermostat offers a cost-effective, reliable fix for common fridge defrost issues.

## Description

Buy BlueStars Upgraded 4387503 Refrigerator Bimetal Defrost Thermostat Replacement - Compatible with Whirlpool & Kenmore Refrigerators - Replaces WP4387503 343917 61002113 PS11742474 AP6009317: Freezer Parts & Accessories - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Does its job - If you're shopping for this, you probably know pretty well what it's for and what issue it could potentially solve. Obviously, it only works for select freezers, as it's designed in a specific way. So the question is: does it work or no? And yes, it does work. It solved my problem completely. No more icing up for my freezer.
Review: Easy install and solved icing issue. - Easy install my fridge kept icing up and after install no more issue with that. This from what I understand is a sensor that turns on a heating element in fridge so it doesn't ice up at the back of the fridge and cause ice to build up. Easy fix if you are a d.i.y person. Like me.

## Features

- IMPORTANT: Please check the model number carefully before ordering. If you're unsure about the compatibility, send us your refrigerator model number and we can help you confirm if it fits or not.
- 100% LIFETIME PROTECTION: Enjoy reliable performance with our lifetime protection, ensuring that your product will always be covered for any defects or issues that may arise.
- PREMIUM QUALITY: The replacement part is made from durable high quality material and well-tested by the manufacturer- Meets OEM standards - Ensure long-lasting and effective performance. The thermostat is a L48-30F which means it opens at 48 degrees F and closes at 62 degrees F.
- SAVE TIME SAVE MONEY: Inexpensive way to fix or repair a refrigerator and a freezer. It stops the fridge from overheating during the defrost cycle by protecting the evaporator. This clip-on thermostat will sense the temperature increase in the evaporator during the defrost process, and will cycle the defrost heater off after the ice or frost is melted. This part fixes the following symptoms: Leaking | Freezer not defrosting | Fridge too warm | Freezer section too warm.
- EASY TO INSTALL: It is made exactly fit for most top name brands (Whirlpool, Kenmore, KitchenAid, Roper, Estate, Maytag, Inglis, Crosley, Hoover, Amana, International, Caloric). Fits models: 106.708764, 106.9630211, 106.9718280, 106.9808715, 106.9808785, 10642102300, 10642102301, 10642104300, 10642106300, 10642106301, 10660162990, etc.
- REPLACEMENT PART NUMBER: This 4387503 Bimetal Defrost Thermostat replaces part numbers: 2149641, 2149643, 2163894, 2172694, 2182380, 2183072, 2221677, 4343917, WP4387503, 61002113, R0950042, WP4387503VP, PS11742474, AP6009317.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07X25W7CS |
| Age Range (Description) | Adult |
| Best Sellers Rank | #80,718 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #72 in Freezer Parts & Accessories |
| Brand | BlueStars |
| Color | Silver |
| Date First Available | August 29, 2019 |
| Display Type | Analog |
| Included Components | 1 x 4387503 Bimetal Defrost Thermostat |
| Indoor/Outdoor Usage | Indoor |
| Item Length | 7.8 Inches |
| Item Weight | 0.634 ounces |
| Item model number | 4387503 WP4387503 PS11742474 AP6009317 |
| Lower Temperature Rating | 48 Degrees Fahrenheit |
| Manufacturer | BlueStars |
| Model Name | 4387503 Refrigerator Bimetal Defrost Thermostat |
| Outer Material | Metal |
| Power Source | Battery Powered |
| Product Care Instructions | Wipe Clean |
| Reusability | Reusable |
| Special Feature | EASY TO INSTALL |
| Unit Count | 1 Count |
| Upper Temperature Rating | 62 Degrees Fahrenheit |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** BlueStars
- **Color:** Silver
- **Display Type:** Analog
- **Included Components:** 1 x 4387503 Bimetal Defrost Thermostat
- **Outer Material:** Metal
- **Power Source:** Battery Powered
- **Product Care Instructions:** Wipe Clean
- **Special Feature:** EASY TO INSTALL
- **Unit Count:** 1 Count

## Images

![BlueStars Upgraded 4387503 Refrigerator Bimetal Defrost Thermostat Replacement - Compatible with Whirlpool & Kenmore Refrigerators - Replaces WP4387503 343917 61002113 PS11742474 AP6009317 - Image 1](https://m.media-amazon.com/images/I/41-bxmw8xYL.jpg)
![BlueStars Upgraded 4387503 Refrigerator Bimetal Defrost Thermostat Replacement - Compatible with Whirlpool & Kenmore Refrigerators - Replaces WP4387503 343917 61002113 PS11742474 AP6009317 - Image 2](https://m.media-amazon.com/images/I/41OvXNZ4prL.jpg)
![BlueStars Upgraded 4387503 Refrigerator Bimetal Defrost Thermostat Replacement - Compatible with Whirlpool & Kenmore Refrigerators - Replaces WP4387503 343917 61002113 PS11742474 AP6009317 - Image 3](https://m.media-amazon.com/images/I/51FwcQGN6UL.jpg)
![BlueStars Upgraded 4387503 Refrigerator Bimetal Defrost Thermostat Replacement - Compatible with Whirlpool & Kenmore Refrigerators - Replaces WP4387503 343917 61002113 PS11742474 AP6009317 - Image 4](https://m.media-amazon.com/images/I/51UG8COSvML.jpg)
![BlueStars Upgraded 4387503 Refrigerator Bimetal Defrost Thermostat Replacement - Compatible with Whirlpool & Kenmore Refrigerators - Replaces WP4387503 343917 61002113 PS11742474 AP6009317 - Image 5](https://m.media-amazon.com/images/I/51bYhbIw2rL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does its job
*by M***R on August 26, 2025*

If you're shopping for this, you probably know pretty well what it's for and what issue it could potentially solve. Obviously, it only works for select freezers, as it's designed in a specific way. So the question is: does it work or no? And yes, it does work. It solved my problem completely. No more icing up for my freezer.

### ⭐⭐⭐⭐⭐ Easy install and solved icing issue.
*by R***E on June 28, 2024*

Easy install my fridge kept icing up and after install no more issue with that. This from what I understand is a sensor that turns on a heating element in fridge so it doesn't ice up at the back of the fridge and cause ice to build up. Easy fix if you are a d.i.y person. Like me.

### ⭐⭐⭐⭐⭐ Perfect fit and work as they should
*by F***P on June 25, 2025*

The refrigerator is a 1995 KitchenAid mod# KTRS21MDAL02 and the parts fit like a glove. After the 2nd timer failed I knew there was another problem. Heater element ohm'd out ok,(if it works it'll get hot and you'll hear water drops steam off when they hit it, the meter was overabundance of caution but be careful!), when I changed it so I assumed the first timer was bad. Well, turns out the timer and limit switch are available as a kit. I guess those failures are common enough to sell both parts together. I suggest changing both. Yes, taking the freezer apart is no fun but it also isn't difficult, just time consuming and timers aren't free. May as well have a bowl/pail of warm soapy water and a rag handy, there's more behind the floor panels than I ever would have guessed... The limit switch is hard wired direct so it will need to be cut and the new one crimped or nutted in. There are videos if your nervous (don't be nervous but DO unplug your unit). Not hard, just pair up the wires to their matching mates and attach them to each other. So now my fridge has been running just like the old days and I have ice cubes again! This is a mid level repair that doesn't require any intense knowledge but some mechanical aptitude will go far. You can disassemble everything for inspection (unplug 1st) and then, plug back in, advance the timer manually and observe/inspect everything in operation. Especially convenient when you're looking at the heater element. This is for the girls too, you can do it as easy as anyone else can so don't be afraid to try. Watch a vid or 2 and save yourself some hard earned cash! You can do it!

## Frequently Bought Together

- BlueStars 4387503 Refrigerator Bimetal Defrost Thermostat Replacement - Compatible with Whirlpool & Kenmore Refrigerators - Replaces WP4387503 343917 61002113 PS11742474 AP6009317
- BlueStars Ultra Durable W10822278 Refrigerator Freezer Defrost Timer Replacement - Compatible with Whirlpool KitchenAid Kenmore Refrigerators - Replaces PS11723171 945514 482493 R0950217 2188372
- BlueStars W10225581 Refrigerator Bimetal Defrost Thermostat Replacement - Compatible with Whirlpool Kenmore - Replaces WPW10225581 PS11750673 AP6017375 2188824 2321799 W10260437

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-01*