Exceeding the standard in general aviation

iE2 Engine

The flagship of our innovation, equipped with state-of-the-art aviation electronics and sensors for a modern flying experience.

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Thunderbolt Engine

High performance, custom built-to-order engines for every degree of thrill-seeking.

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233 Series

Traditional Lycoming performance in a lightweight package for your light sport aircraft, with dry weight of 213 pounds including the fuel pump, and up to 115 hp at 2,800 RPM. Lycoming’s 233 Series engines are available for non-certified OEM and homebuilt light sport aircraft.

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235 Series

Lycoming’s four-cylinder 235 Series engine is a popular choice for home-built, as well as OEM-produced aircraft. With models producing up to 125 hp at 2,800 RPM, this engine powers many aircraft around the world.

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320 Series

Lycoming’s four-cylinder 320 Series engines produce 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.

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360 Series

Lycoming’s extremely popular four-cylinder 360 engine combines rugged reliability with smooth performance, producing 145 to 210 hp. Since 1955, certified 360 cubic inch engines from Lycoming have been installed in thousands of aircraft.

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390 Series

Lycoming’s 390 Series four-cylinder engines produce 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.

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540 Series

Lycoming’s 540 Series six-cylinder engines are powerful and durable, producing 235 to 360 hp at up to 2,700 RPM.

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580 Series

The Lycoming 580 Series of six-cylinder engines is powerful, producing 315 hp at 2,700 RPM with reliable direct drive and excellent power to weight ratio. This model meets the ever-growing performance requirements of modern-day aircraft design, and is also a popular retrofit under Supplemental Type Certificates.

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720 Series

Lycoming's eight-cylinder IO-720 Series engines produce up to 400 hp at 2,650 RPM, and are the largest engine in production today at the Lycoming factory.

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DEL-120 Series

A 4-cylinder turbocharged and FADEC controlled unmanned aircraft engine with 205 hp of takeoff power.

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EL-005 Series

Otto cycle spark-ignited engine for unmanned aircraft that supports 98% to 100+% mission readiness rates.

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Specializing beyond traditional aviation


Manufacturing the only FAA-certified piston helicopter engines to power all certified piston-powered helicopter applications built today.


The only FAA-certified manufacturer of certified aerobatic piston engines that top pilots, performers, and formation teams trust for precision, speed, and reliability.


Using our proven aviation propulsion experience to power manned and unmanned mission focused aircraft with increased system reliability.

Discover why pilots turn to Lycoming for piston engines and support.