page_title: Lycoming O-320
section_title: Applications
hierarchical_section_title: Lycoming O-320 / Applications
caption_attribution_description: English: A Thorp T-18 amateur-built aircraft at the Hanover, Ontario Rust Remover
context_page_description: The Lycoming O-320 is a large family of naturally aspirated, air-cooled, four-cylinder, direct-drive engines produced by Lycoming Engines. They are commonly used on light aircraft such as the Cessna 172 and Piper Cherokee. Different variants are rated for 150 or 160 horsepower. As implied by the engine's name, its cylinders are arranged in horizontally opposed configuration and a displacement of 320 cubic inches.
context_section_description: Aero Eli Serviza Yo-Yo 222
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caption: The Lycoming O-320 is a common engine used by amateur-builders in the Thorp T-18.
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