3 HP Replacement Single Stage Air Compressor Pump Brand new two-cylinder cast iron single stage air compressor pump. This is a 3 horsepower pump that will deliver 11.8 CFM at 1100 RPM with a max RPM of 1400. This pump is most commonly used on compressors under 60 gallons in size and can be used with a true 3 horsepower motor (these motors typically run at 15 amps on 230 volts). This pump comes complete as shown in the photos, including intake filter and pulley. See specifications below for more details. Features: Cast Iron Cylinder and Crankcase Equipped with Sight Glass for Easy Viewing of Oil Level Comes with Two Intake Filters Specifications Two Cylinder Single Stage Recommended Motor Size: 3 HP CFM at 1100 RPM: 11.8 CFM at 1400 RPM (Max RPM): 15.1 Cylinder Diameter: 65mm Cylinder Stroke: 46mm Pump Flywheel Diameter: 10.5" Working Pressure: 120 PSI Maximum Pressure: 150 PSI Net Weight: 55 lbs Outside Dimension: 15.36" x 11.42" x 13"