Aluminum intake manifolds have many propitious advantages as strength, resistance to heat, and durability. High-quality aluminum alloys makes it possible to withstand the harsh temperatures and pressures of an engine. Also, their lightweight properties further reduce the overall weight of the vehicle which improves fuel economy and performance. For these reasons, these manifolds are used wherever efficient heat management is crucial, especially in high-performance vehicles. Accurate machining must be performed within nitto tolerances to the internal passage configurations to maximize efficiency. The intake manifold is reliable for a long time because aluminum does not rust. The only disadvantage is their higher cost compared to plastic intake manifolds.
