Kohler PA-CH640-3120 Engine 1-1-2 x 2-41-64 Shaft Horizontal Ele Start 20.5 HPKohler PA CH640 3120 Engine 1 1 2 x 2 41 64 Shaft Horizontal Ele Start 20. 5 HP COMMAND PRO CH640 You work your tail off 12+ hours a day. It's time to hold your engine to the same standard. With extended maintenance intervals and fuel efficient operation, KOHLER Command PRO engines work as hard as you do. Features Integrated oil coolers extend oil change intervals and maintain low temperatures during the entire power range High efficiency, heavy duty