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What Are Exhaust Manifolds and What Do They Do? | The Engine’s First Exhaust Step

Understanding what exhaust manifolds are and what they do comes down to one simple image: a metal junction box that takes multiple streams of hot gas and turns them into one. It’s the engine’s first exhaust step, and when it works correctly, you never notice it. When it fails, you hear it, smell it, and feel it in the pedal.

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