Car exhaust system BMW 5 Series E39

Exhaust system — general information
The exhaust system consists of two front exhaust pipes, which on the 520i, 523i and 525tds models are combined in front of the catalytic converter. This is...

Exhaust system device
Exhaust system models 520i, 523i 1 - nut 2 - gasket for triangular flange 3 - front exhaust pipe with catalytic converter 4 - tightening sleeve 5 - middle...

Operation of the catalytic converter
The engines of all vehicles are equipped with a catalytic converter for cleaning exhaust gases. The catalytic converter consists of a ceramic honeycomb body...

Handling vehicle catalytic converters
To avoid damage to the oxygen sensor and catalytic converter, the following instructions must be observed without fail: Gasoline engines Be sure to use...

Removal and installation of system of release of the fulfilled gases
All parts of the exhaust system can be replaced individually. Attention: When installing the exhaust system parts, make sure that the parts are tightly joined....

Replacing the subsequent muffler
Serial subsequent mufflers can be replaced separately with new parts. To disconnect the exhaust pipe, a standard chain cutter, eg from HAZET, is required....

Removal and installation of the oxygen sensor
Attention: When applying a protective coating to the underbody, the oxygen sensor must be covered. Withdrawal Remove the engine cover over the injectors, see...

Check of tightness of system of release of the fulfilled gases
On vehicles with a variable catalytic converter, a leak in the exhaust system upstream of the oxygen sensor can cause the following problems: starting...