Metal Versus Composite Intake Tubing

Updated on May 5, 2025

RealTruck Expert Team
Written by
 RealTruck Expert Team
Close-up of a car engine with visible air intake components and hoses.

One of the most distinguishing factors between different air intake systems is the material used to construct the intake tube. The two common materials used to craft these tubes are composite plastic and metal (aluminum or steel). Choosing the right air intake system for your ride is easy, once armed with a little knowledge of the advantages of each material.

Metal

K&N 77 Series Air Intake

Car air intake with filter and piping system.

K&N Blackhawk Induction Air Intake

Black automotive air intake with a curved pipe and cone-shaped filter.

Spectre Cold Air Intake

Vehicle air intake system with cone filter and heat shield.

Composite

Composite intake tubes are usually made with a high-density polyethylene plastic. While plastic can sound like a bad word when it comes to auto parts, thermoplastic polyethylene combines lightweight flexibility with outstanding durability. In fact, it can even be found in certain bulletproof vests. This composite material is more than capable of withstanding conditions under the hood of your vehicle.

From a performance standpoint, there are a couple of advantages that composite has over metal. First, composite material doesn’t retain heat the way metal does, meaning your plastic tubing doesn’t run as much risk of heating up the air entering your engine. Second, the composite molding process allows for precisely engineered bends, moreso than can be found on a metal intake. This allows the air to flow more freely to the intake manifold, slightly improving power over a metal tube.

aFe Magnum Force Stage 2

Performance cold air intake system with a filter and black piping.

K&N 63 Series AirCharger

Automotive cold air intake filter with airflow shield and duct.

S&B Cold Air Intake

A black turbocharger component with a curved pipe and a rectangular air intake.

If you have questions about air intake systems, contact our product experts. We're here for you, from guaranteed fitment to install assistance and resources like our blog to answer your questions.

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