Sub-Zero Refrigerator Refrigerator Parts and Accessory 4200520, Replaces SZ4200520 – Superseded by 4200520

Is This the Right Part?

Confirm the complete model number before ordering. Similar parts may use different connectors, dimensions, hose positions, electrical ratings, or mounting points.

• Ice maker not producing ice
• Ice maker stopped cycling after a period of normal operation
• Ice cubes coming out misshapen, hollow, or undersized
• Water overflowing from the ice mold into the freezer
• Ice maker harvest arm stuck or not moving

• OEM Sub-Zero part number: 4200520 / SZ4200520
• Status: Discontinued — No Longer Available (NLA)
• Complete ice maker assembly — includes mold, harvest motor, thermostat, and control module

• Disconnect power to the refrigerator before beginning.
• Shut off the water supply valve to the refrigerator.
• Open the freezer and locate the ice maker mounted to the freezer wall.
• Disconnect the wiring harness connector and the water supply line from the existing ice maker.
• Remove the mounting screws and pull the old ice maker free from the bracket.
• Mount the replacement assembly to the bracket, reconnect the wiring harness and water supply line.
• Restore water and power, then allow 24 hours for the ice maker to complete its first full harvest cycle.

Part Details

Use a qualified technician when diagnosis or installation is outside your experience. Gas parts should be installed by a licensed technician.