briggs and stratton vertical 17.5 hp 500cc intek engine 9amp 1" x 3-5/32" #31r977-0054 briggs & stratton this genuine 500cc briggs & stratton single cylinder engine offers dependable power for your equipment needs. with a power rating of 17.5 horsepower, this engine features a premium dual clean air filtration system, electric starter, and maintenance-free magnetron electronic ignition. with a manufacturer limited warranty of 2 years consumer use / 1 year commercial use, briggs & stratton provides power that you can trust. this engine includes a dura-bore cast iron cylinder sleeve for extended life. this engine includes a fuel pump. this engine includes an oil filter. this engine includes a 9 amp charging system.