CFM Plus Intake Manifolds offer you the highest and coolest airflow for your diesel engine. The internal flow path is designed to eliminate all obstructions and provide you with a 40% air flow increase over stock. They are made with only the best highly engineered composite material. This material is able to handle temperatures up to 400° F and also insulates your air flow from under the hood engine heat. Comes with all you need to complete your install if you are already using 3.5" pipe/hose. FREE Shipping!