Mercury - Quicksilver 826053T Water Pump Housing Mercury 4HP 2-Stroke & 4/5/6HP Carbureted Outboards 826053T. Overview. A strong cooling system starts with the right foundation. The Quicksilver 826053T Water Pump Housing keeps your Mercury 4HP 2-stroke and 4/5/6HP carbureted outboards running cool and dependable. Built from reinforced nylon, this OEM housing is designed to handle heat, pressure, and vibration while keeping your water pump performing at factory efficiency.. Whether you're replaci