Briggs Stratton 386447-3077-G1 horizontal Vanguard engine is 627cc and puts out 23.0 HP (maximum horsepower). This V-Twin Vanguard has a 1″ x 3-1/4″ threaded 1-14 crankshaft. Briggs Stratton Vanguard engines feature durable components such as full pressure lubrication for extended life, OHV design for cooler operation and a float carburetor for easy starting. Common applications include golf/turf equipment, commercial mowers, power packs/generators and more. 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.