Top Street Performance high-flow mechanical water pumps provide that extra cooling power your high-performance engine demands—and they are lightweight and flow at a rate up to 40 percent over stock pumps. All TSP mechanical water pumps are cast from lightweight A356 aluminum and heat-treated to T6 hardness, which not only provides strength, but aluminum works to manage heat far better than cast iron. Top Street Performance offers these high-flow mechanical water pumps in satin, polished, or chrome finishes. Order the water pump model that is designed to fit your application.