Type: Gas Flanged Bore: 0.591" Stroke: 0.299" Gallons Per Minute: 3.0 Pounds Per Square Inch: 3,000 RPM: 3,400 GHP: 10.8 Ez Series 44 Triplex Plunger Pump With Hollow Shaft Flanged For Direct Couple To Gasoline Engines Sae J609b Forged Brass Manifold With Exclusive Lifetime Warranty Flanged for mounting on up to 13 HP engines Maximum Inlet Pressure 125 Psi Maximum Fluid Temperature 165degrees F Inlet Port Thread 1/2"-14 Bsp-f Discharge Port Thread 3/8"-19 Bsp-f Shaft Diameter 1" Pump Dimensions 8.8" X 9.7" X 6.5" Maximum Inlet Vacuum 3 Ft., Water (2.6" Hg) Crankcase Oil Capacity 14 Oz.