The ULPower UL520i is a Belgian aircraft engine, designed and produced by ULPower Aero Engines of Geluveld for use in homebuilt aircraft.

[1] The engine is a six-cylinder four-stroke, horizontally-opposed, 5,254 cc (320.6 cu in) displacement, air-cooled, direct-drive, gasoline engine design.

It employs dual electronic ignition and produces 180 to 200 hp (134 to 149 kW) at 3300 rpm.

[1] Data from Tacke and manufacturer[1][2] Aircraft of comparable role, configuration, and era

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