a non - metallic intercooler assembly includes an intake header tank , outlet header tank , and a multitude of non - metallic charge tubes which communicate airflow from the intake header tank to the outlet header tank . several combinations of plastics parts are described . tanks of intercoolers can be made from plastics today but with complicated clamping and sealing . each tank in this description can be laser welded in place . various combinations of laser opaque and laser transparent materials are utilized to achieve an effective laser welding assembly process . intake systems for automotive use are widely made of plastic materials today and this description shows how those types of materials can be employed in an intercooler . each non - metallic tube can be supported by a plastic fin feature whose primary function is to support the structure to promote airflow conditions favorable to heat transfer .