The Banks 42765 3 Inch Monster Ram Intake Manifold is designed to deliver instant torque and quicker throttle response for your 5.9 Cummins 2003-2007. This high-performance intake manifold improves airflow from the intercooler and is larger and less restrictive than stock, raising boost without increasing turbine drive pressure. It uses the OEM Boost Tube and comes with up to six 1/8-inch NPT ports. Out-boosting the competition by up to 56.9%, this intake manifold is CNC port-matched for stock heater and Banks Billet Heater Delete. Get the most out of your Cummins engine with the Banks 42765 3 Inch Monster Ram Intake Manifold.