Pump Only Kit (Bolts to 9 HP Gas Engine)Got a big job to do? Use this Hypro 1551 centrifugal pump, which is more than tough enough to tackle even the biggest spraying areas. This high capacity model helps you tackle large area tasks, such as spraying liquid fertilizers and other chemicals, without sustaining damage because of its sturdy, cast iron housings. If you plan to use powders that can be wetted down, this pump can handle that, too.