Briggs Stratton 12S402-0020-F8 horizontal 9.00 Gross Torque engine is 205cc and has a 3/4″ x 2-7/16″ crankshaft with a 3/16″ keyway. No flange mounting. Briggs Stratton 9.00 Gross Torque engines are built with dependable features like float carburetors for easy starting, cast iron cylinder sleeves for extended life and overhead valve design for cooler operation. Buyer protection package provides two-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.