Water filter
Replaces W10735404
Makers suggest a new water filter about every six months.
Thermistor
Replaces 12791419SP
Senses temperature so the fridge cycles on and off.
Door gasket
A gasket that doesn't seal lets warm air in and frost build up.
Ice maker
Replaces W10793298
No ice, or ice that won't drop, points to the ice maker.
Evaporator fan blade
A stopped fan means warm sections and frost on the coils.
Switch
Replaces C3680310V
Door, lid and control switches stop a cycle when they fail.
1Water filterEDR4RXD1
2ThermistorW10316760
3Door gasketW10443320
4Ice makerW10884390Part numbers come from the Sears PartsDirect parts list for the KitchenAid KRFF305EBL00 (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
Inside the fresh food section, on a side wall or the ceiling near the light. Some models: behind the kick plate at the bottom.