Semi-active dampers are well known for their optimal balance between affordability and comfort. This study aims to evaluate the performance of a variable orifice damper (VOD) in a McPherson suspension system, a semi-active damper mechanism, using Computational Fluid Dynamics (CFD) analysis through ANSYS Fluent software. The focus is on calculating the maximum damping force produced by the damper at minimal orifice openings, providing insights into its effectiveness and potential applications in automotive suspension systems. The VOD is designed to adjust its damping force according to road conditions, thereby enhancing vehicle comfort and handling. The CFD parameters are adapted from the CFD analysis of other prominent damper designs, which have been validated through experimental testing. The fluid for testing is selected by performing rheometer tests and comparing various commercial damper fluids. The designed VOD achieved a damping force of 388.668 N. In comparison with dampers of similar dimensions, the damping forces of the VOD obtained through CFD analysis are comparable to the experimental values of those dampers. Hence, it is expected that the developed VOD is likely to produce good experimental results. The research indicates that the new VOD provides effective damping with minimal hole openings and offers enhanced control. This makes it a promising semi-active damper for varying road conditions, potentially justifying its manufacture and further experimental testing to confirm its benefits and reliability in practical applications.