The Best Value In Performance Water Pumps!We offer the same value as the leading performance aluminum water pumps with a cost and quality that outperforms the others. This pump features a CNC cast iron impeller (except 51067), high-flow housing with zinc plated backing plate, heavy-duty ball/roller bearing, machined steel billet fan mounting hub and gaskets. The benefits of this pump are higher flow and pressure to match or exceed the competition.