This study investigates the cooling performance of a backward-facing step using forced convection with air, systematically studying the impact of strategically positioned fins to enhance heat transfer. Numerical simulations were conducted varying Reynolds numbers between 50 and 200 while maintaining a constant Prandtl number (Pr = 0.71), focusing on configurations with up to three fins. Deploying three fins in specific positions resulted in a significant 45% increase in average Nusselt number compared to configurations without fins. Optimal heat transfer occurred near the fins and step, emphasizing critical temperature gradients crucial for effective cooling. These findings emphasize the importance of optimizing fin placement for maximizing heat transfer in engineering applications.