The primary function of the exhaust manifold is to collect exhaust gases from each individual cylinder and merge them into a single exhaust stream. This helps to improve the engine's performance by reducing back pressure and increasing exhaust flow. The exhaust gases are then directed to the catalytic converter, where harmful emissions are reduced before being released into the atmosphere. The present study concludes that a CFD simulation was conducted to examine the flow characteristics of the exhaust manifold system. The exhaust manifold system has been analyzed to obtain plots of velocity, pressure distribution, velocity streamline flow, turbulence kinetic energy distribution, and temperature distribution. The objective of current research is to conduct fluid flow analysis of exhaust system using ANSYS CFX simulation package. From the CFD simulation, pressure distribution, velocity distribution is evaluated. The pressure is higher at the inlet and reduces as the gas moves towards outlet. The turbulence kinetic energy distribution and temperature distribution are evaluated for entire geometry.