Briggs Stratton 15T212-0223-F8 horizontal 11.50 Gross Torque engine is 250cc and has a 3/4″ x 2-7/16″ crankshaft. Briggs Stratton 11.50 Gross Torque engines are designed with reliable components like mechanical governors, float carburetors and Maxi-Clean air filters for superior performance and power. 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.