The BD X-Intake Stainless Steel Air Intake is designed to allow for maximum airflow through the intake for quicker throttle response, lower exhaust temperature and increased power output. If your engine breathes better, it will perform better. BD's polished, stainless steel intake box looks and works great combined with a performance free-flowing air filter. Allows 200% more air flow to your engine over stock designs to give your diesel engine the unrestricted airflow it needs.