Mallory 9-48301 Upper Water Pump Kit Proper maintenance and quality parts are the most important contributors to efficient cooling system operation Mallory Marine cooling systems components from out impellers and housing to our complete water pump kits are engineered and rested to assure your cooling system will perform like new Quality materials such as rubber and plastic compounds are formulated to provide maximum performance High grade marine stainless steel wear plates and cups for excellent corrosion and wear resistance