This parts manual covers the Lycoming IO-540-C4D5D Series aircraft engine, a product of Lycoming Aircraft Engines. Designed for aviation propulsion, this horizontally opposed, air-cooled, normally aspirated engine features a displacement of 540 cubic inches and operates on Aviation Gasoline (Avgas). The IO-540-C4D5D Series is engineered for reliability and performance in demanding aviation environments, representing a significant component in aircraft systems.

This English-language Parts Manual provides essential information for identifying and procuring components for the Lycoming IO-540-C4D5D Series engine. It is intended for use by owners, mechanics, and technicians involved in the maintenance and repair of these aircraft engines. The manual details various parts and their specifications, aiding in the accurate selection and replacement of components to ensure continued operational integrity and safety.