Yamaha - Outer Plate, Cartridge Water Pump Component 6CE-44323-01-00. Overview. The Yamaha Outer Plate, Cartridge 6CE-44323-01-00 is a thin but essential component within the water pump system, positioned directly beneath the impeller to ensure smooth rotation and efficient water flow. Its precision-machined surface reduces friction and supports consistent cooling performance, helping your engine maintain proper temperature under all conditions. Replacing this plate during routine water pump ser