What parts fit the KitchenAid KUIS18PNXB2?

Thermistor WPW10503764, Freestanding ice maker recirculation pump W11566405, Start relay WP2217224, Drain pump W11539855.

KitchenAid KUIS18PNXB2 ice maker parts: thermistor

Thermistor

Reads or limits temperature. A failed one can stop the heat or let it run too hot.

Shop the thermistor on Amazon Other models that use WPW10503764

Freestanding ice maker recirculation pump

Replaces 2313628

Water left behind after a cycle usually points to the pump.

Shop the pump on Amazon Other models that use W11566405

Start relay

No ice, or ice that won't drop, points to the ice maker.

Shop the start relay on Amazon Other models that use WP2217224

Drain pump

Replaces W10122062

Water left behind after a cycle usually points to the pump.

Shop the drain pump on Amazon Other models that use W11539855

1ThermistorWPW10503764

2PumpW11566405

3Start relayWP2217224

Part numbers come from the Sears PartsDirect parts list for the KitchenAid KUIS18PNXB2 (view the list), checked November 15, 2026. Amazon buttons open a search for the part number; we may earn a commission.

Where the model number is

Behind the lower front grille or on the back of the unit.

Other KitchenAid ice makers

KUIS18PNJB8KUIS18PNTB0KUIS18PNTB1KUIS18PNTW2KUIS18PNTW3KUIS18PNTW4KUIS18PNXW0KUIS18PNXW1KUIS18PNZB0KUIS18PNZB1