Genuine Kohler Command 25HP Twin Cylinder Air Cooled Horizontal Shaft Engine. Shaft is 3 1/4 inches long and 1 1/8 inches in diameter. Save Big On Quality OEM Used Parts. Pictures are of actual engine in its current condition. Is a authorized Kohler dealer & service center. NOTE: Engine has 1449 HRS. Engine was pulled off a Grasshopper lawn mower w/ 1449 hours. Engine was inspected & tested and found to be in good and proper working order.