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Automotive glossary

Exhaust System

The exhaust system carries exhaust gases from the engine, cleans them and reduces noise.

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What is Exhaust System?

It includes the manifold, catalytic converter, filters, silencers and pipes. Sensors measure oxygen and temperature. Hangers support it. Exhaust parts are often made of stainless or aluminised steel to resist corrosion. Heat shields protect the underbody and fuel lines from heat and can rattle when their fixings corrode. Rubber hangers isolate vibration; a broken hanger lets the system knock against the body.

How it works

Gases flow through cleaning and silencing components.

Why it matters for your car

Leaks can let fumes into the cabin. Rust is common on older systems.

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