Drain pump
Water left in the drum after a cycle usually points to the pump.
Drive motor
A motor that hums but won't turn, or stops once it's warm, needs replacing.
Agitator dog
Replaces 3366877
Drive parts wear out: a machine that fills but won't spin or agitate often points here.
Clutch
Replaces 3946794
Drive parts wear out: a machine that fills but won't spin or agitate often points here.
Gear case
Replaces 3360630
Drive parts wear out: a machine that fills but won't spin or agitate often points here.
Drive block
Drive parts wear out: a machine that fills but won't spin or agitate often points here.
1Drain pumpWP3363394
2Drive motorWP661600Part numbers come from the Sears PartsDirect parts list for the Whirlpool CAP2772BN1 (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
Front-load: on the door frame or the door rim. Top-load: under the lid or on the back of the control panel.