5 HP Replacement Two-Stage Air Compressor Pump Two cylinder cast iron two stage air compressor pump. This is a 5-horsepower pump that will deliver 18.71 CFM at 860 RPM with a max RPM of 900. This pump is most commonly used on compressor tanks of 80 gallons or larger in size and can be used with 220-volt 5 horsepower electric motors or larger. To verify your motor is large enough, it should be 20 amps or higher at 220 volts and at least 5 HP. This pump has a minimum RPM of 750. 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 One Intake Filter Specifications Two Cylinder Two Stage 5 HP Maximum Recommended Working Pressure: 175 PSI Recommended RPM: 750-900 SCFM: 19 Max Bolt Pattern: 7.76" (Front to Back) x 9.02" (Side to Side) Because of the weight of this pump, it has to ship freight. When purchasing please specify if it is going to a commercial address otherwise it will ship to your nearest trucking terminal for pickup. If you have questions about this, please contact us before purchasing.