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 complete with all required hardware and installation manual. Not for use on trucks with Hydro Brake Booster. FREE Shipping!