What Are Stacks on a Semi Truck?

Semi-trucks are a common sight on the roads across America. They are used to transport large loads of goods and materials from one place to another.

But what exactly is a semi-truck? And what are stacks on a semi-truck?

A semi-truck, also known as a tractor-trailer, is a large truck that consists of two parts: the tractor and the trailer. The tractor is the front part of the truck that contains the engine and driver’s cab, while the trailer is the back part of the truck where cargo is stored. Semi-trucks are usually used for long hauls, as they can carry more cargo than smaller trucks.

Stacks on a semi-truck refer to exhaust pipes that protrude from either side of the tractor’s rear end. The stacks are typically made from stainless steel and can come in different shapes and sizes. Their main purpose is to funnel smoke away from the driver’s cab, keeping it clean and free of fumes.

Stacks also serve another important purpose, which is to increase air flow under the truck. This helps to reduce drag and increase fuel efficiency by allowing air to escape more quickly and easily than if it were blocked by stacks. Additionally, some states require certain types of semi-trucks to have stacks in order to comply with emission laws.

Conclusion:

Stacks on a semi-truck serve two important purposes: firstly, they help keep the driver’s cab clean by funneling smoke away from it; secondly, they increase air flow under the truck which helps reduce drag and increase fuel efficiency. Stacks are often required by states in order to comply with emission laws.

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James Gardner