2-5 HP SINGLE STAGE. THIS SINGLE STAGE PUMP WILL FIT OR REPLACE MOST BRANDS. CAST-IRON CYLINDER AND FLYWHEEL. COMES W/ 12.00 OD FLYWHEEL AND AIR FILTER. We carry motors, compressor parts, rebuilding/tune-up kits for all major brands of air compressors. Give us a call! The item “ROLAIR 2-4 HP SINGLE STAGE AIR COMPRESSOR PUMP With FLYWHEEL PMP12MK113, K113″ is in sale since Tuesday, May 05, 2015. This item is in the category “Business & Industrial\Light Equipment & Tools\Air Compressor Parts & Accs\Other Air Compressor Parts”. The seller is “pacificaircompressors” and is located in Portland, Oregon. This item can be shipped to United States.