| The
            O-360 was introduced in 1962 with fuel injection (designated
            the IO-360).  This engine is still in production.
             A
            four-cylinder version of the O-360, the O-240 was
            introduced in 1971.
             
           | 
           | 
          
            
                | 6-cylinder, horizontally-opposed, air-cooled
                piston engine |  
                | Displacement: 360 cubic inches  
                (5.9 liters) |  
                | Bore x stroke: 4.4375 x 3.875 inches |  
             
           |