PLM Turbo Shield Guard Screen Air FilterPLM Turbo Shield Guard your turbo! PLM Turbo Shield is the best value and protection for your turbo. By putting a screen clamp over the turbo inlet, it prevents large debris from entering into the turbo housing. This is the best way if you don't have room to run a cone style filter or want to retain that clean engine bay look! True one piece molded silicone design Stainless steel mesh screen High temperature rated silicone Available in 3" or 4" inch