Defrost bi-metal
Replaces 2172694
Senses temperature so the fridge cycles on and off.
KitchenAid KTRD18KDAL00: 3 replacement parts, including the defrost bi-metal (WP4387503) and the defrost timer (W10822278). Parts list from Sears PartsDirect, checked November 15, 2026.
Replaces 2172694
Senses temperature so the fridge cycles on and off.
Replaces 2176340
A dead display or random faults can come from the control board.
Replaces 1108112
Door, lid and control switches stop a cycle when they fail.
1Defrost bi-metalWP4387503
2Defrost timerW10822278Part numbers come from the Sears PartsDirect parts list for the KitchenAid KTRD18KDAL00 (view the list), checked November 15, 2026. Amazon buttons open a search for the part number; we may earn a commission.
Inside the fresh food section, on a side wall or the ceiling near the light. Some models: behind the kick plate at the bottom.