Whirlpool Washer Agitator Assembly (W11550891)

The Whirlpool Washer Agitator Assembly mounts in the center of the wash basket and moves back and forth to circulate clothes through the wash water. This motion helps lift, separate, and reposition items so detergent can work and soil can rinse away. The assembly connects to the drive system and transfers that movement into the wash action you see during the agitate portion of the cycle.

Failure can happen from normal wear, overloading, or repeated cycles with heavy items. Internal splines, dogs, or coupler surfaces can strip, which lets the drive system turn without moving the agitator as designed. Cracks in the plastic body, a loose mounting point, or a worn internal cam can also reduce agitation and add noise during operation.

Common signs that point to an agitator assembly problem include:

• The washer fills and drains but the load barely moves during the wash portion of the cycle
• The agitator moves in one direction only, or it slips and then catches
• Clothes come out poorly cleaned compared with normal cycles
• Clicking, grinding, or rattling sounds during agitation
• The agitator feels loose, wobbles, or can be lifted more than usual
• Visible cracks, worn teeth, or damaged splines on the agitator assembly