In-Take Manifold otherwise known as inlet manifold is the collection of tubes found on the engine which supplies fuel and air mixture to the cylinders. The important function of intake manifold is the distribution of the combustion mixture evenly to all the intake port of the cylinder heads. To optimize the engine performance and efficiency, it is important to distribute the combustion mixture evenly. However, the intake manifold has partial vacuum in it and the power derived from it is used in driving the auxiliary systems such as power windows, cruise control, etc. In general, intake manifold is made of cast iron or aluminum. Of late, composite plastic materials are used in manufacturing it. Intake manifold is part of the induction system and engines might have either intake manifold system that carries air-fuel mixture or port fuel injection which carries only air.