Exhaust Pipes
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, 2011 Ford Fusion, 2010 Mercury Milan, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
Exhaust pipes serve as guides for the flow of exhaust gases from the engine exhaust manifold through the catalytic converter and the muffler. The pipes are usually treated with an anti-corrosive coating agent during manufacturing to increase the life of the product.