Frigidaire Refrigerator Defrost Thermostat Kit / Defrost Bi-Metal Thermostat 5303918214, Replaces 75303918214

OEM refrigerator defrost thermostat kit. It monitors evaporator-coil temperature and controls power to the defrost heater. The kit includes the thermostat, clip, wire leads, and heat-shrink material.

Is This the Right Part?

✅ Cross Reference Information

Common Symptoms

• Excessive frost or ice on the freezer’s rear interior panel or evaporator area
• Freezer section becoming too warm as airflow is restricted by frost
• Fresh-food section becoming warm while the freezer remains cold
• Refrigerator running for unusually long periods because frost obstructs cooling airflow

Check Before Replacing

• With the refrigerator unplugged, visually inspect the evaporator area for heavy frost and verify that the thermostat is clipped securely to the evaporator tubing in its original position.
• Inspect the thermostat leads, crimp connections, and insulation for looseness, corrosion, or visible damage.
• If electrical testing is appropriate for the specific refrigerator service procedure, check thermostat continuity with power disconnected and the thermostat at the required cold condition; do not bypass the thermostat or test live wiring.
• Check the defrost heater and defrost-control components separately because frost buildup does not by itself identify the thermostat as the failed component.

Pro Tip

Part Details

Key Features

• Genuine Frigidaire OEM refrigerator defrost thermostat kit
• Bi-metal temperature-sensing thermostat
• Includes mounting clip, wire leads or crimp connectors, and heat-shrink material
• Designed to protect the evaporator from overheating during the defrost cycle
• Listed as L47-22°F by Supco’s cross-reference documentation for this Frigidaire replacement

Installation Notes

• Disconnect electrical power before servicing.
• Access generally requires removing the freezer shelves or drawers and the rear interior evaporator panel, depending on the refrigerator design.
• Unclip the old thermostat from the evaporator tubing and install the replacement in the same location using the included clip.
• Follow the kit’s wiring diagram and use the supplied connectors and heat-shrink material for the wire connections.
• Keep wiring clear of evaporator fins and sharp edges, then reinstall removed panels and interior components before restoring power.

Verified Compatible Models

25344302400, 25344302401, 25344303400, 25344303401, 25344303402, 25344303403, 25344304400, 25344304401, 25344309400, 25344309401, 25344333600, 25344333601, 25344333602, 25344333603, 25344333604

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.