Bi-Metal Defrost Thermostat
Part # WP4387489·Whirlpool·Refrigerator

Bi-Metal Defrost Thermostat

The WP4387489 is a bi-metal defrost thermostat for Whirlpool refrigerator. Basic tools needed. Compare prices from top sellers.

Replaces: 1103841, 1103842, 1106890, 1108182, 1531676, 1531678, 1547088, 1547454, 1547854, 1547856, 1547858, 1548886, 1548887, 1548890, 1548894, 20009002, 20009011, 2946, 434424, 4387489, 46000482697, 480478, 480594, 480595, 480851, 481227, 482290, 482697, 483006, 483007, 513315, 513548, 513574, 513989, 513990, 515246, 515315, 53-0217, 53-0253, 53-1678, 530215, 530216, 530217, 53025-3, 530253, 530254, 530317, 530318, 530327, 530328, 530435, 530990, 531068, 531069, 531479, 531480, 531668, 531669, 531676, 531678, 531679, 531680, 531689, 531690, 531813, 531814, 547048, 547069, 547088, 547089, 547090, 547091, 547295, 547296, 547323, 547454, 547455, 547853, 547854, 547855, 547856, 547857, 547858, 547859, 547860, 547861, 547862, 548463, 548464, 548712, 548713, 548886, 548887, 548888, 548889, 548890, 548891, 548892, 548893, 548894, 548895, 548896, 549698, 549699, 549700, 549701, 549757, 549758, 549928, 549929, 833958, 850115, 850116, 850117, 850118, 850119, 850120, 850121, 850122, 850341, 850342, 850607, 850669, 851022, 851368, 851390, 851397, 851674, 851675, 851890, 851891, 934390, 934391, 934424, 934425, 934426, 934427, 934468, 934469, 936139, 936140, 937071, 937072, 937303, 937304, 989319, 989320, 989553, 989578, 989579, 989588, 989589, 989624, 989625, 989626, 989685, 99989718, GL2697
Moderate Repair

Fits Kenmore appliances

Kenmore

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Price Comparison

5 stores · Updated May 16, 2026
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Bi-metal defrost thermostat works with some Whirlpool, Jenn-Air, Kenmore, KitchenAid, Maytag, Amana, Magic Chef, Admiral, Norge, and Roper models of fridges.

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Common Problems This Part Fixes

Freezer section too warm
Fridge and Freezer are too warm
Fridge too cold
Freezer too cold
Freezer not defrosting
Fridge runs too long
Will not start

Repair difficulty: Moderate - basic tools and 1-2 panels to remove

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