SHURFLO 4158-153E75. AQUA KING II SUPREME FRESH WATER PUMP. Designed for boats with multiple fixtures, this pump provides just like home shower pressure, yet can operate at low flow conditions without cycling. Built in mechanical bypass function enables pump to vary the flow rate without an accumulator. Heavy duty motor built to withstand the marine environment with electro-coated seamless shell. Inlet strainer and 1/2 hose barb fittings included. 12 volt. 5. 0 GPM. Max 10 Amps. Shut-off pressure of 55 PSI. CE Listed.