Banks Power Ram-Air Intake System (2003-2007 Dodge HD 5.9 Diesel)Banks Ram Air Superiority. Flowbench developed, dyno proven. Improves airflow up to 62%; Enclosed cold air box with exclusive 4 1 2" bellows to accommodate engine movement. Cooler temps, less smoke and more MPG. 50 State Compliant CARB E. O. D 161 146 Key Features Enclosed housing keeps out hot, power robbing engine air Reduces exhaust gas temps and sooty, black smoke. Inhales cooler outside air for more power & MPG Extends service life and requires