Temperature sensor
Controls the heat. A dryer that runs too hot or won't heat points here.
Blower belt
Turns the drum. If the motor hums and the drum stays still, check the belt first.
Rear bearing
Thumping or squealing during a cycle points to worn rollers, pulleys or bearings.
Fan drum
Moves air through the drum. Long drying times and rattling point here.
Fill hose
Cracked or leaking hoses should be replaced before they burst.
Hose
Replaces 00445594
Cracked or leaking hoses should be replaced before they burst.
1Sensor00613753
2Blower belt00604866
3Rear bearing00618931
4Fan drum00650172Part numbers come from the Sears PartsDirect parts list for the Bosch WTB86200UC/07 (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 door opening, on the frame or the back of the door. Older models: on the back panel near the cord.