How to Identify an Exhaust Header

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Its always important to be able to identify the various parts and components in your automobile. Identify an exhaust header with help from an expert in the automotive industry in this free video clip.

Part of the Video Series: Lessons from a Car Expert
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Video Transcript

Hi. This is Bob Holcomb from Apex Automotive in Great Barrington, Massachusetts. Today we're going to look at exhaust headers and an exhaust manifold. How we determine we have an exhaust header is pretty much by its look and shape. This device is off a 350 Chevrolet engine and it is an exhaust header. Each one of the exhaust ports have an individual tube that comes down into a header pipe, right here. An exhaust manifold looks quite a bit different than the header. These two center parts, actually, collect together, and the two end parts come into this header portion, right here. Although, this is the distinctive design of an exhaust header. There are two types of headers: There's this untuned type of header, and there's a tuned header. A tuned exhaust port header would have each individual pipe be the exact same length all the way to the collector. That would be a tuned header. This particular header has a port for the oxygen sensor. This is a poor place for this oxygen sensor to be in this header. The oxygen sensor should be back after the collector, so that it can monitor all four cylinders on the side of this V-8 engine. If the oxygen sensor was plugged into just this one number three cylinder, it would only monitor that cylinder, and it wouldn't be efficient. The way to tell an exhaust header between a manifold is its size and shape and distinctive design. And that's how you tell the difference between an exhaust manifold and an exhaust header. I'm Bob Holcomb from Apex Automotive in Great Barrington, Massachusetts.


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