This Hyundai 420cc 13 Horsepower engine features a 1'' horizontal keyway output shaft. It's designed for use with commercial lawn and garden equipment, construction, forestry equipment and much more. The durable cast iron cylinder minimizes wear and prolongs engine life, that paired with a built-in low-oil ignition shutdown circuit offers peace of mind in the extreme environments these engines were intended to work in. Powerful and efficient replacement engines allow you to easily upgrade older equipment, as well as offering a starting point when custom building log splitters, grain augers, water pumps and more.