The exhaust manifold is the very first component of your exhaust system. Your Vehicle will either have one or two depending on year, make, and model.
Exhaust manifolds bolt directly to the cylinder head, with a gasket sandwiched in between. Unfortunately, over time exhaust manifolds can crack, or gaskets can become worn out causing an exhaust gas leak. Some Symptoms include: loud exhaust noises, loss of power, exhaust odors, and a loss of MPG. If your car is experiencing any of those issues, you should have it checked out.