What term describes a low-cost collector welded into the header as a single tube?

• A. Merge
• B. Mandrel Bend
• C. Formed
• D. Shorter Length

Answer: (C)

This question tests understanding of manufacturing terms used for exhaust collectors. A low-cost collector that is welded into the header as a single tube is described as formed. Formed means the collector is created from one continuous piece of tubing that’s shaped to join the runners into a single exit, with welding used to attach it to the header. Because it’s a single-piece tube, the fabrication is simpler and cheaper than assembling multiple tubes or using more complex fittings.

Think about how other terms fit: a merge implies combining several separate tubes into one—a process that adds parts and work, increasing cost. A mandrel bend refers to how a tube is bent to keep its inner diameter smooth, but it doesn’t by itself describe the collector’s overall construction as a single formed piece. Shorter length describes a size or dimension, not the fabrication method.

So the best term for a low-cost collector welded into the header as a single tube is formed.