The Continental O-526 is a family of air-cooled flat-6 aircraft piston engines built by Teledyne Continental Motors.[1]
Constructiuonally similar to the O-470 series the O-526 has larger cylinders of increased bore and stroke, giving a displacement of 526cuin. The O-526 was introduced with reduction gearing and a supercharger as the GSO-526 for the Cessna 620