A net-shape molded heat sink is provided which includes a thermally conductive main body and a number of thermally conductive fins integrally connected to and emanating from the main body. The heat sink is formed by overmolding a carbon-carbon matrix core plate with a thermally conductive polymer composition that is filled with thermally conductive filler material. The molded heat sink is freely connecting through the part which makes it more efficient and has an optimal thermal configuration.