SHURFLO 4148-153E75. AQUA KING II FRESH WATER PUMP. Quiet operation and smooth performance while providing the ultimate in durability and reliability. Designed and built specifically for the harsh marine environment, these pumps are equipped with sealed switches and seamless e-coated motors. Thermally protected. Ignition Protected. 3 year warranty. 4. 0 GPM. 12 VOLT. 10 AMP. 55 PSI.