NOTICE: BEFORE YOU PLACE YOUR ORDER. Our 33S877-CC 19 HP Briggs & Stratton Engine Kit is a replacement for most Kohler Courage Single Cylinder Engines On Cub Riding Mowers. Cub Cadet Riding Mowers. You Must Use 33S877-CC15. Engine Mounting Holes Are Not Threaded You Will Need 4 5/16″ x 1-3/4″ Bolts, Washers, And Nylock Lock Nuts. Briggs & Stratton 33S877-FLG 19 Gross HP Engine. 9 Amp Charging System (Is Sufficient For Electric PTO Clutch). 1? X 3-5/32 Crankshaft. Muffler & Gasket or Manifold Pipe & Gasket. NOTE: WE MUST HAVE YOUR ELEVEN DIGIT MODEL & SERIAL NUMBER TO SEND THE CORRECT PARTS FOR YOUR CONVERSION! You may need to reroute fuel lines, change throttle controls, depending on your model. We Are A Real Brick And Mortar Store, We Have Been In Business For Over 40 Years! No PO Boxes, Must Have A Physical Address! INSPECT YOUR ORDER WHEN YOU RECIEVE IT!