Front Exhaust Pipe With Catalytic Converters And Front Muffler

Special tools and workshop equipment required

Spring Type Clip Pliers VAS 5024 A

Removing

-- Remove the engine cover and air filter. Refer to Removal and Installation .

-- Disconnect the electrical connector -arrow- for heated oxygen sensor (HO2S) -G39- and oxygen sensor (O2S) heater -Z19- and free up the wiring.

Fig 1: Disconnecting Heated Oxygen Sensor (HO2S) G39 Harness Connector

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-- Remove the accessible nuts -arrows- for the front exhaust pipe/turbocharger from above.

Fig 2: Identifying Front Exhaust Pipe With Catalytic Converter Support Bolts And Font Exhaust Nuts

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-- Remove the right vehicle underbody cover -arrows-.

Fig 3: Identifying Right Vehicle Floor Cover

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-- Disconnect electrical connector -arrow- for oxygen sensor (O2S) after three way catalytic converter (TWC) -G130- and heater for oxygen sensor (O2S) 1 after catalytic converter -Z29- and free up wiring.

Fig 4: Disconnecting Connector For Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130

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-- Remove the remaining nuts -arrows- for the front exhaust pipe/turbocharger from below.

Fig 5: Identifying Front Exhaust Pipe With Catalytic Converter Support Bolts And Font Exhaust Nuts

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-- Remove the supports for the front exhaust pipe with catalytic converter, by removing bolts -1 and 2-.

NOTE:

Flex joints in front exhaust pipe must not be bent more than 10°, otherwise they may be damaged.

-- Disconnect the exhaust system at the clamping sleeve -arrows-.

Fig 6: Disconnecting Exhaust System At Clamping Sleeve

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-- Remove crossmember for vehicle floor -arrows-.

Fig 7: Identifying Front Underbody Cross Member

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-- Remove bracket for exhaust system -arrows-.

Fig 8: Identifying Exhaust System Bracket

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-- Remove front exhaust pipe with catalytic converters and front muffler.

Installing

Install in reverse order of removal. Note the following:

For the correct tightening specifications, refer to EXHAUST SYSTEM OVERVIEW

NOTE:

Replace gaskets and self-locking nuts.

-- Install exhaust system free of stress. Refer to EXHAUST SYSTEM, ALIGNING .