The WG04F01873 is a genuine OEM dishwasher circulation pump and motor assembly for GE and affiliated brand dishwashers. This circulation pump and motor assembly is a critical component that circulates water from the sump collection area up through the spray arms during the wash cycle, providing the water pressure and flow needed for effective cleaning. The assembly consists of an electric motor (typically 100-120 watts, 120 volts AC, 60 Hz), a centrifugal pump with internal impeller blades, a motor shaft, a sump housing that collects water from the dishwasher tub, internal water passages that direct water to the spray arms, electrical terminals for connection to the dishwasher control board, and a mounting bracket for secure installation. The motor draws approximately 0.8-1.2 amperes during operation and operates at variable speeds controlled by the dishwasher control board to provide different water pressure levels for various wash cycles. The WG04F01873 assembly measures approximately 6-8 inches in diameter and 4-6 inches in height, weighing approximately 2-4 pounds. The pump and motor assembly is mounted at the bottom of the dishwasher tub and connects to the spray arm system with internal water passages and external hoses. When activated by the control board during the wash cycle, the motor spins the impeller blades at high speed, creating centrifugal force that propels water from the sump through the spray arms and back into the tub for effective cleaning. The WG04F01873 replaces older part numbers including 1811038, AH10059439, AH3486941, EA10059439, EA3486941, PS10059439, PS3486941, and others with improved reliability, efficiency, and water circulation performance. Over time, dishwasher circulation pump and motor assemblies can fail due to motor bearing wear causing grinding or squealing noises, impeller blade damage or cracking from debris, motor winding failure from electrical overload or short circuits, seal failure causing water leakage into the motor, debris blockage preventing pump rotation, corrosion or rust from prolonged water exposure, thermal overload from continuous operation, or manufacturing defects. When the circulation pump and motor assembly fails, symptoms include the dishwasher not washing properly (poor cleaning performance), weak water spray from the spray arms, the dishwasher not circulating water during the wash cycle, unusual grinding, squealing, or rattling noises from the pump area, water leaking from the pump or sump area, the dishwasher stopping mid-cycle, error codes displayed on the control panel (such as wash or circulation error codes), the dishwasher running but no water pressure in the spray arms, or the motor not activating during the wash cycle. The WG04F01873 is a complete replacement circulation pump and motor assembly that restores full dishwasher wash cycle operation and cleaning performance. Replacing a faulty circulation pump and motor assembly eliminates all circulation-related problems and restores reliable, efficient dishwasher operation. Important: Always turn off power at the circuit breaker and shut off the water supply before working on the dishwasher. This repair requires significant disassembly of the dishwasher interior and sump system. Verify your dishwasher model number before ordering. Test the motor with a multimeter before replacement to confirm motor failure.