Speedmaster electric water pumps eliminate unnecessary weight and impeller drag experienced at high RPM. These durable but light weight aluminum pumps push up to 5. gallons of water per minute of coolant circulation, Speedmaster electric water pumps give you the flow that you need, without costing you horsepower. CNC-machined from Billet aluminum, these lightweight pumps have a direct-drive 12 V motor, spinning a redesigned impeller on a stainless steel shaft. Speedmaster pumps draw just 6.8 amps. Because they don't run off of your crank, they won't eat up race-winning horsepower. Other features include availability in several colors, superior RFI suppression, and a removable center section for cam adjustment or replacement.