What other component is part of the exhaust system besides pipes and manifolds?

Mufflers are a critical component of the exhaust system, which is designed to manage the gases produced by the engine during combustion. Their primary function is to reduce noise generated by the exhaust as it exits the vehicle. Mufflers accomplish this by using a series of internal chambers and materials that dissipate sound waves. Furthermore, they play a role in controlling the back pressure within the exhaust system, which can impact engine performance.

The other components listed, such as the radiator, oil filter, and spark plugs, serve different functions unrelated to the exhaust system. The radiator is involved in cooling the engine, the oil filter cleans the engine oil, and spark plugs ignite the air-fuel mixture within the combustion chamber. Each of these components is essential for the overall operation of a vehicle, but they do not contribute to the management of exhaust gases. Understanding the specific function of each part within a vehicle's systems helps in recognizing how they work together to ensure efficient operation.