Whirlpool Pump Base (W10902589)

The Whirlpool Pump Base supports and positions the drain pump assembly and helps seal and direct water through the pump housing during drain and recirculation. It provides a stable mounting point so the impeller and motor can move water without the housing shifting or leaking. Common failures come from cracks in the plastic, warping from heat, wear at sealing surfaces, or damage from debris like glass, bones, or hard food particles. Over time, vibration and repeated thermal cycles can loosen mounts or distort the base, which can lead to seepage and poor pump performance. Use these symptoms to help decide if the Whirlpool Pump Base matches your issue: Water leaking from the pump area, especially during drain or wash Visible cracks, chips, or deformation on the pump base Dishwasher not draining fully even though the pump motor runs Intermittent draining that changes as the unit vibrates or shifts Unusual rattling or vibration near the pump mounting area Signs of mineral buildup or staining around the pump base seam