Front Exhaust Pipe With Catalytic Converters

Special tools and workshop equipment required 

• Torque wrench (5-50 Nm) VAG 1331
• Torque wrench (40-200 Nm) VAG 1332

Removing

-- Remove the Heated Oxygen Sensor (HO2S) and the HO2S 2. Refer to HEATED OXYGEN SENSOR AND HEATED OXYGEN SENSOR 2 .

-- If present, remove the bracket bolt -arrow- from the front exhaust pipe.

Fig 1: Identifying Bracket Bolt

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-- Remove the front exhaust pipe to exhaust manifold nuts -arrows- accessible from the top.

Fig 2: Identifying Front Exhaust Pipe Nuts At Bottom From Exhaust Manifolds

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-- Remove the center noise insulation fasteners -1, 2 and 3- and the noise insulation.

Fig 3: Identifying Center Noise Insulation Fasteners

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-- Remove the right front part of the wheel housing liners.

Fig 4: Identifying Right Front Part Of Wheel Housing Liners

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-- Remove the three screws -arrows- on the right floor panel cover.

Fig 5: Identifying Oxygen Sensor Connectors, 1 And 2

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-- Disconnect the Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC) -1- and O2S 2 behind TWC -2- connectors on the floor panel.

-- Remove the connection coupling from the bracket and free up the wiring to the O2S behind TWC and O2S 2 behind TWC.

-- Remove the front exhaust pipe to exhaust manifold nuts -arrows- accessible from bottom.

Fig 6: Identifying Front Exhaust Pipe Nuts At Bottom From Exhaust Manifolds

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-- Remove the front underbody crossmember by removing the nuts -1 and 2-.

Fig 7: Identifying Underbody Crossmember Nuts

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-- Separate the exhaust system at the clamping sleeve -3-.

-- Remove the suspended mount bolts -arrows-.

Fig 8: Identifying Bracket For Exhaust System

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-- Remove the front exhaust pipe with catalytic converters.

Installing

Installation is performed in the reverse order of removal, noting the following.

-- Align the exhaust system free of tension. Refer to EXHAUST SYSTEM, INSTALLING .

Tightening Specifications