The Peruvian textile industry is one of the most relevant within the manufacturing sector, contributing significantly to the national GDP. However, it faces major productivity challenges, as the average OEE in the sector remains below the global standard of 80%. The company analyzed reflects this situation, with an OEE of 66.3%, 13.7% lower than the industry benchmark, highlighting a clear opportunity for improvement. This study aims to increase machine availability and production efficiency, currently limited by low equipment performance and delays in deliveries. To address these issues, Lean Manufacturing tools such as 5S, TPM, and SMED were implemented. The 5S methodology focused on improving organization and order in the raw materials warehouse, TPM established preventive and autonomous maintenance to minimize downtime, and SMED optimized changeover times to enhance productivity. A simulation with Arena Software and a 5S pilot test produced a 12.88% increase in OEE, surpassing expectations and confirming the effectiveness of the proposed model for SMEs in the textile and apparel sector.