This manual covers the Lycoming IO-540 series aircraft engines, specifically the J, K, M, N, P, and R models. Manufactured by Lycoming Engines, the IO-540 is a 6-cylinder, horizontally opposed, air-cooled aircraft engine with a displacement of 540 cubic inches. It features fuel injection and is designed for aviation use, operating on Aviation Gasoline (Avgas). This engine is renowned for its robust engineering and reliability, making it a trusted component in numerous aircraft.

The purpose of this Illustrated Parts Catalog (IPC), document number PC-215-2, is to provide detailed information on the components of the Lycoming IO-540 aircraft engines. This 118-page manual, published in June 1993, serves as an essential resource for identifying and ordering replacement parts. It aids owners, mechanics, and technicians in maintaining the operational integrity and longevity of these engines through accurate part identification and cataloging.