KoolAir Pump PM500 Replaces March LC-3CP-MD 115 volt MARINE AC COOLANT PUMP THAT HAS RUN DRY CAPABILTY 510 GPH (GALLONS PER HOUR) Comes with 2 Bases (Marine and Standard) Equivalent to March LC-3CP-MD 3 Series The pump is not self-pricing, and requires a flooded suction.