5 to 7.5 HP Replacement Single Stage 3 Cylinder Air Compressor Pump Brand new three cylinder cast iron single stage air compressor pump. This is a 5 - 7.5 horsepower pump that will deliver 16.94 CFM at 900 RPM, with a max RPM of 1000. This pump is most commonly used on compressor tanks of 60 - 80 gallons in size and can be used with 220-volt 5 - 7.5 horsepower electric motors. To verify your motor is large enough, it should be at least 20 amps or higher at 220 volts and 5 - 7.5 HP. This pump comes complete as shown in the photos, including intake filters and flywheel. See specifications below for more details.  Features: Cast Iron Cylinder and Crankcase Equipped with Sight Glass for Easy Viewing of Oil Level Comes with Three Intake Filters Specifications Three Cylinder Single Stage 5 - 7.5 HP Recommended Working Pressure: 115 PSI Recommended RPM: 800 - 1000 CFM: 16.94 at 900 RPM