Yamaha - Water Pump Housing Cover Cooling System Component 6CB-44312-00-00. Overview. The Yamaha Water Pump Housing Cover 6CB-44312-00-00 is designed to enclose and protect the water pump assembly, ensuring proper sealing and efficient cooling system operation. This cover helps maintain the correct pressure within the pump and directs water flow through the engine. If the cover becomes worn, cracked, or improperly sealed, it can lead to reduced water pressure and potential overheating. Replacing it helps keep your cooling system functioning reliably.. Key Features. • Protective Pump Housing Cover - Encloses and secures the water pump assembly.. • OEM Fit Precision - Built to Yamaha specifications for proper alignment and sealing.. • Maintains Cooling Efficiency - Helps ensure consistent water flow and pressure.. • Durable Construction - Designed to withstand heat, pressure, and harsh marine environments.. Engine & Boat Compatibility. Verify compatibility with your specific Yamaha engin