Refrigerator Defrost Thermostat for Whirlpool Sears AP3108444 PS371244 WP4387489

❄️ Refrigerator Defrost Thermostat | OEM‑Compatible | Replaces Whirlpool® 4387489

Brand new refrigerator defrost thermostat replacing Whirlpool®, Sears®, Kenmore®, Estate®, Roper®, and KitchenAid® part number 4387489. This thermostat regulates the defrost cycle by opening and closing at specific temperatures to prevent frost buildup on the evaporator coils. Opens at 70°F and closes at 58°F for proper defrost control.

⚙️ Product Features

• Direct replacement for Whirlpool® 4387489
• Opens at 70°F, closes at 58°F
• Restores proper defrost cycling
• Prevents ice buildup on evaporator coils
• Durable OEM‑compatible construction
• Condition: Brand New – Unused

Replaces Part Numbers

434424, 480478, 480594, 480595, 480851, 481227, 482290, 482697, 483006, 483007, 513315, 513548, 513574, 513989, 513990, 515246, 515315, 530215, 530216, 530217, 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, 1103841, 1103842, 1106890, 1108182, 4387489, 99989718, 46000482697, GL2697, 2946, AP6009312, PS371244, EAS371244

Fits Models

Model list not provided. This thermostat fits a wide range of Whirlpool‑family refrigerators using the part numbers above. Please verify compatibility with your model before purchase.

Common Fixes

• Frost buildup on evaporator coils
• Refrigerator too warm or not cooling properly
• Unit stuck in defrost or not entering defrost
• Ice forming on back wall of freezer

️ Installation Tips

• Disconnect power before servicing the appliance
• Access thermostat near evaporator coil inside freezer
• Inspect wiring harness for corrosion or damage
• Clip thermostat securely to evaporator tubing
• Run a defrost cycle test after installation

Reliable defrost performance restored—OEM‑compatible replacement for Whirlpool‑family refrigerators.