Your intake manifold plays a crucial role in how your engine breathes and performs — but most drivers don’t realize how important it is. In this AutoParts 101 video, we explain what the intake manifold does, how it distributes air to the engine’s cylinders, and how its design affects power and efficiency. We’ll also cover the common signs of intake manifold problems, like vacuum leaks, rough idling, or poor fuel economy, and why fixing them early can save you from bigger repairs. Need to replace