Briggs & Stratton 386447-3048-G1 horizontal Vanguard engine is 627cc and puts out 23.0 HP (maximum horsepower). This V-Twin Vanguard has a 1-1/8″ x 4″ crankshaft with a 1/4″ keyway. Briggs & Stratton Vanguard engines are designed with advanced technologies that reduce operation temperatures, extend life and reduce vibration and emissions while remaining compact and powerful. Common applications include power packs and generators, commercial mowers and golf/turf equipment. Buyer protection package provides three-year limited consumer engine warranty. 50-State CARB Compliant. All engines purchased from us ship for free and are foam packed for added protection during transit.