Hypro Diaphragm Pump D30GRGI with GX160QH Honda Gas Engine Hypro D30 diaphragm pump performance: Maximum 8.5 gpm, 550 psi, 3600 RPM, 140 deg. F fluid temperature Honda GX160QH gas engine is rated at 4.8-5.5 HP Includes 9910-GS40GI Pressure Regulator and a 9910-KIT1640 Gearbox to allow for the pump to attach to the Honda 4.8-5.5 HP gas engine with a 3/4" shaft. 1" hose barb inlet, 1/2" hose barb outlet Weighs 65 lbs.