This paper experimentally and numerically addressed the performance characteristics of pleated air filter with
different parameters. The main objective is to enhance the I.C engine performance. The studied parameters are; pleat
height, pleat spacing, media thickness, air velocity, and consume fuel. Experiments are done with air velocity from 1 to
5 m/s whereas the fuel volume was constant at 25x10-6 liter. Three different types of filters are explored as; loaded filter,
standard filter, and optimized filter. Modeling of pleated air filter is designed using FLUENT 14.5 code. Filter media is
developed as a porous zone. The results revealed that; the optimized pleated air filter provides a lower fuel consumption
rate in comparing with standard filter and loaded filters.