Defrost heater
Melts frost off the cooling coils. Frost buildup and a warm fridge point here.
Water valve
Replaces WR57X110
Slow filling, no water or no ice can trace back to this valve.
Ice maker
Replaces WR30X318
No ice, or ice that won't drop, points to the ice maker.
G.e. refrigerator condenser fan motor
A stopped fan means warm sections and frost on the coils.
40a15/22
Replaces STD372402
The light bulb this model takes.
Door shelf rail end cap
Crisper drawers, shelves and door bins made for this fridge.
1Defrost heaterWR51X444
2Water valveWR57X10033
3Ice makerWR30X10093
4Fan motorWR60X187Part numbers come from the Sears PartsDirect parts list for the GE TBX18NITGRWH (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.