Full Tilt Cummins Intake Manifold Kit - 2250The Full Tilt 11 15 ISX Intake Manifold is a direct replacement to the factory intake manifold. The inside has been completely redesigned improving not only airflow, but velocity and distribution of clean air into the engine. Our on the road testing has shown a strong . 3 . 5 MPG gain over stock with a noticeable change in engine power and responsiveness. This manifold will come painted Cummins Red, but can be ordered ceramic coated. As with all of