Certified and Non-Certified horizontally opposed, air-cooled, four, six- and eight-cylinder engines powering more than half the world's general aviation rotary and fixed wing aircraft fleet. Parts and accessories.
Lycoming’s aircraft engine lineup includes the following engine families each with numerous versions.
235 Series - Four-cylinder engines with rated horsepower up to 125 hp at 2,800 rpm. A popular choice for home-built, as well as OEM-produced aircraft.
320 Series - Four-cylinder engines with rated horsepower 150 or 160 hp at 2,700 rpm. These engines power numerous popular aircraft produced by companies like Cessna, Piper, and kit manufacturers such as Van’s and Glasair. The 320 Series also powers the early Robinson R22 helicopter.
360 Series - Four-cylinder engines extremely popular due to their rugged reliability and smooth performance delivering 145 to 210 hp at 2,700 rpm.
390 Series - Four-cylinder engines featuring 210 hp at 2,700 rpm. One of Lycoming’s newest engines, the IO-390-A, is designed to meet the power, payload, and speed requirements of the kit aircraft segment, and is currently being certified for helicopter applications.
DEL-120 Series - Four-cylinder turbocharged and FADEC controlled piston aircraft engines with 205 hp of takeoff power.
540 Series - Six-cylinder engines powerful and durable, producing 235 to 360 hp at up to 2,700 rpm.
541 Series - top induction, down exhaust, turbocharged, direct-drive engine series with side-mounted accessories producing 380 hp horsepower.
580 Series - Six-cylinder direct drive engines with rated horsepower 315 at 2,700 rpm. They meet the ever-growing performance requirements of modern aircraft design while being also a popular retrofit under Supplemental Type Certificates.
720 Series - Eight-cylinder engines delivering up to 400 hp at 2,650 rpm with IO-720 engines being Lycoming's most powerful engine in production today at the Lycoming factory.
Thunderbolt Experimental Engines - Non-Certified engine solutions offered as standard experimental engine models or under premium Thunderbolt brand of high performance, built-to-order powerplants. Thunderbolt engines are genuine Lycoming engines factory built, tested and supported with several popular options of fuel systems, ignition systems, performance enhancements and finishing options.