United Power 13 HP Horizontal Gasoline Engine with low oil alert. Powerful and efficient engine at a great price. This is a powerful 13 HP OHV engine for horizontal mounting applications.  Common applications: lawn tractors, pressure washers, go-karts, trenchers, agricultural equipment, chipper/shredders, air compressors, concrete saws, and a variety of construction equipment. This engine is very similar to the Honda GX390 engine.  Outstanding power and value.