This thesis examines the optimization of internal logistics flows within an automotive manufacturing environment, focusing on the integration between logistics operations and production processes. Based on Lean principles, the study aims to transform a non-standardized material handling system into a structured, standardized, and partially automated logistics configuration. The research was conducted in a plant specialized in engine-related components for major automotive manufacturers. Initial analysis showed that internal logistics activities, managed by a dedicated operator (runner), were characterized by high variability, absence of standardized routes, and dependence on verbal communication. Material replenishment, semi-finished transfers, finished goods handling, and scrap removal were performed without predefined scheduling logic, generating fragmented movements and inefficiencies.