* Exhaust Manifolds (or Headers): These are bolted to the engine and collect exhaust gases from each cylinder. They're often integrated with the catalytic converter on some models.
* Catalytic Converter(s): These convert harmful pollutants in the exhaust gas into less harmful substances. The Impala likely has at least one, possibly two depending on the engine and emissions regulations.
* Downpipe(s): Connects the exhaust manifold(s) or catalytic converter(s) to the rest of the exhaust system. Again, the number will depend on whether it’s a V6 or V8.
* Intermediate Pipe(s) (or Mid-pipes): This section of pipe runs from the catalytic converter(s) to the muffler. It might be a single pipe or multiple depending on the layout.
* Muffler(s): Reduces the noise level of the exhaust gases. Most Impalas will have at least one muffler.
* Resonator(s) (Optional): These are similar to mufflers but designed to absorb specific sound frequencies, further reducing noise and improving exhaust tone. They're not always present.
* Tailpipe(s): The final section of the exhaust system, extending from the muffler(s) to the rear of the vehicle, and discharging exhaust gases into the atmosphere.
* Hangers/Brackets: These secure the entire exhaust system to the vehicle's undercarriage. They are crucial to prevent damage and rattling.
Important Note: To get the exact configuration for *your* 2000 Chevy Impala, it's best to check a parts diagram specific to your vehicle's VIN (Vehicle Identification Number) at an auto parts store website (like AutoZone, Advance Auto Parts, etc.) or a repair manual. This will ensure you get the right parts. The engine type significantly affects the specific layout and number of components.