The Nissan exhaust system is important to your vehicle in a great number of ways. The smooth and efficient emission of exhaust gasses helps the vehicle to perform at its best. The proper function of the Nissan exhaust system helps to prevent environmental pollution, keeping the harmful chemicals emitted by the vehicle at the lowest possible level. The Nissan exhaust system is composed of a number of components, beginning with the exhaust valves in the engine itself. The exhaust valve emits a burst of exhaust gasses, produced by combustion in the engine. These gasses travel from the valve into the Nissan exhaust manifold, or headers, depending upon which the vehicle is equipped with. From this point, they are channeled into the Nissan exhaust pipe to travel through the catalytic converter, where toxic chemicals are sifted out, then to the muffler to reduce the noise, and out the vehicle tailpipe. If the Nissan exhaust system is not functioning properly, a number of vehicle performance problems can result. Backpressure can become a problem with an inefficient Nissan exhaust system, causing decreased engine power. If the Nissan exhaust system is blocked at any point, such as a clogged catalytic converter, the vehicle can run rough, and produce excess emissions. The muffler can fail, affecting the vehicle performance, and producing an unacceptable level of noise. We carry a selection of Nissan exhaust system replacement parts at great low prices in our online catalog. Our live help, available on our site, will be happy to assist you if you need help choosing the right Nissan exhaust parts to fit your vehicle. Our secure site makes ordering your Nissan exhaust parts safe and easy, or our toll-free number can take your order just as conveniently.