This guide provides an overview of the major parts found in jet engines and explains their roles in aircraft propulsion. It covers essential components such as the fan, compressor, combustion chamber, turbine, and exhaust system, highlighting how each contributes to efficient engine operation. The article is useful for aviation professionals, maintenance teams, procurement specialists, and readers seeking a better understanding of jet engine systems. It also offers helpful context for identifying and sourcing replacement components for aircraft engine maintenance and repair requirements.