Brilliant MBP20H, 2" High-Pressure Gasoline Water Pump 6HP/181cc Powered by Mitsubishi GT600 Engine HP/CC: 6HP/181CC Inlet/Outlet Diameter: 2" NPT Gallons per Minute: 122GPM for 20H and 79GPM for 20H2 (duel impeller) Suction: 20 feet, Self Priming Pump Head Material: Aluminum, Mechanical Seal Material: Ceramic Carbon