Defrost Timer
The WP4391974 is a defrost timer for Whirlpool refrigerator. Basic tools needed. Compare prices from top sellers.
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Moderate Repair
Fits Whirlpool appliances
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4 stores · Updated May 16, 2026
Lowest$72.60
4.8(728)In Stock
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$115.48
4.5(13.6k)In Stock
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$115.49
4.8(21.9k)In Stock
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$121.25
4.4(3.1k)In Stock
Go to StoreThe SxS Refrigerator Defrost Timer manages the automatic defrost cycle in your appliance’s freezer compartment. If the timer isn’t advancing like it should or triggering your freezer to enter defrost mode, the part could be broken and need replacement. This part also includes (2) nuts and (2) screws for mounting. Note that this part does not include the defrost timer knob, but you can purchase it separately. Turn the dial on the timer clockwise to advance it into and out of the defrost cycle. Installing this part will require basic hand tools, minor disassembly of the dishwasher and novice repair experience. Remember to unplug the refrigerator or shut off the house circuit breaker for the appliance before installing this part.
Part Specification
• This product is a Factory Certified Part. These three words represent quality parts and accessories designed specifically for your appliance. Time tested engineering that meets our strict quality specifications
• This product is a replacement part
• Package contains (1) SxS Refrigerator Defrost Timer
• Tools Needed: Multi screwdriver
Part Specification
• This product is a Factory Certified Part. These three words represent quality parts and accessories designed specifically for your appliance. Time tested engineering that meets our strict quality specifications
• This product is a replacement part
• Package contains (1) SxS Refrigerator Defrost Timer
• Tools Needed: Multi screwdriver
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Common Problems This Part Fixes
Freezer not defrosting
Fridge runs too long
Repair difficulty: Moderate - basic tools and 1-2 panels to remove
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