Pump requires 5 HP engine with 2 7/16in.L, 3/4in. straight keyed shaft, 5/16in.-24 tapped hole and 3 5/8in. bolt circle. GPH: 14,265, HP: Requires 5, Port Size (in.): 3, Capacity: 3/4 Inch Soft Solids, Max. Total Head (ft.): 85, Bolt Circle (in.): Requires 3 5/8, Shaft Type: Requires Straight Keyed, Includes: Pump Only Silicon carbi...