This Parts Catalog Manual covers Lycoming IO-320 WCF Series, AIO-320 WCF Series, LIO-320 WCF Series, and AEIO-320 WCF Series aircraft engines. Manufactured by Lycoming Engines, these horizontally opposed, air-cooled piston engines feature a displacement of 320 cubic inches and are designed for aviation propulsion. The Wide Cylinder Flange (WCF) series designation indicates a specific propeller flange type, ensuring compatibility and optimal performance for aircraft applications. Lycoming engines are recognized for their engineering quality and reliability in demanding aviation environments.

This manual serves as a comprehensive guide for identifying and cataloging parts specific to the Lycoming 320 WCF series engines. It provides essential information for owners, mechanics, and technicians to ensure proper maintenance and operation. The English-language catalog details various engine variants and their components, facilitating accurate part selection and replacement. By offering detailed parts information, this manual supports the continued airworthiness and efficient functioning of these critical aviation powerplants.