Performance of Engine depends on different parameters such as type of materials used for making engine, numbers of fins, fin thickness, and fins Shape which escort thermal effect on them. To transfer the heat from any system either by conduction or convection medium. Both modes of heat transfer have been enhanced by providing an additional equipment's in the outer periphery of the heat transfer system. Heat transfer analysis of engine has been done by using computational fluid dynamics. This study focus on the heat transfer rate in fins of light weight automobile engine with use dimples. In this study triangular dimples made on fins which improve the heat transfer of engine The main objectives of the heat transfer analysis is to enhance the heat transfer rate from system to surrounding.