Car exhaust system Mercedes A-Class (W168)

General information about the exhaust system
The exhaust system of cars with a gasoline engine consists of an exhaust manifold, an inlet pipe, a catalytic converter, a muffler with an exhaust pipe (see illustration...

Operating principle of the catalyst
The catalyst is designed to reduce the level of harmful substances in exhaust gases. It consists of a honeycomb ceramic monolith 2 covered with a protective layer (see...

Exhaust gas turbocharger
Diesel engine In a turbocharger, two turbine wheels are installed on one shaft, which are located in housings separated from each other. The wheels are driven by exhaust...

Intake pipe with catalytic converter — removal and installation
Cars with gasoline engines. Warning! Jacking up and jacking up a vehicle may present a risk of injury. Read the safety precautions in Chapter " Jacking up a car "....

Intake pipe with main muffler — removal and installation
Cars with gasoline engines. Warning! Jacking up and jacking up a vehicle may present a risk of injury. Read the safety precautions in Chapter " Jacking up a car "....

Lambda probe — removal and installation
Cars with gasoline engines. Depending on the engine type, the car may be equipped with one or two lambda probes, which regulate the CO content in the exhaust gases. One...

Front catalytic converter — removal and installation
Cars with diesel engines. Removal 1. Remove the intake manifold module, see the relevant chapter . 2. Remove the heat shield. 3. Remove the radiator fan diffuser, see...

Rear catalytic converter and main muffler — removal and installation
Cars with diesel engines. Removal Warning! Jacking up and jacking up a vehicle may present a risk of injury. Read the safety precautions in Chapter " Jacking up a car "....

Turbocharger — removal and installation
Cars with diesel engines. Removal Warning! Jacking up and jacking up a vehicle may present a risk of injury. Read the safety precautions in Chapter " Jacking up a car "....

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