The Pinnacle Drain Pump 1107 is a genuine OEM replacement part designed for select Pinnacle combo washer-dryer models, including 4000, 4400, 820, 18-820, and 18-824. This drain pump efficiently removes water from the wash tub during draining cycles, ensuring smooth operation and preventing water from remaining in the drum. If your machine is not draining properly, makes unusual noises during draining, or displays drain-related error codes, replacing the drain pump can restore full performance.