Nowadays, the use of computational fluid dynamics (CFD) to predict internal or external flows behaviour of different components has sharply risen. Since it moves from analytical and empirical models to computer based simulations, CFD techniques span a wide range of industrial and non-industrial application areas. The field of filtration process is part of CFD's investigations, because it is important to understand and solve pressure loss issues inside the filter element and increase the efficiency of filter medium. This master thesis aims to study the design and pressure drop prediction of an oil filter for automotive field, designed and created by CLEAN FILTERS DELGROSSO S.R.L.