G.e. refrigerator water filter
Also sold as MWF
Makers suggest a new water filter about every six months.
Temperature sensor
Senses temperature so the fridge cycles on and off.
Run capacitor
Replaces WR55X30629
A motor that hums but won't start often needs a new capacitor.
Main control board
Replaces WR55X36006
A dead display or random faults can come from the control board.
Water filter head and tubing
Makers suggest a new water filter about every six months.
Defrost bi-metal thermostat
Senses temperature so the fridge cycles on and off.
Evaporator fan blade
A stopped fan means warm sections and frost on the coils.
1Water filterMWFP
2SensorWR55X10025
3Run capacitorWR55X24064
4Control boardWR55X41845Part numbers come from the Sears PartsDirect parts list for the GE CSB48WP2NKS1 (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.