Left exhaust manifold, removing and installing

WARNING: This page is about a different car, the 2006 Audi A8, 2005 Audi A8, and 2004 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.

Removing

Remove engine → Engine, removing and installing .
Free up Heated Oxygen Sensor (HO2S) 2 G108 electrical wire.

Fig 1: Removing Catalytic Converter With Front Muffler From Exhaust Manifold

GW00028761

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove catalytic converter with front muffler from exhaust manifold - arrows -.

Fig 2: Disconnecting Electrical Connector (Brown) Of Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) G131 And Free Up Electrical Wire

GW00028762

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Disconnect electrical connector - 3 - (brown) of Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) G131 and free up electrical wire.

Fig 3: Removing Bolt On Bracket For Exhaust Pipe

GW00028763

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove bolt - arrow - on bracket for exhaust pipe.

NOTE:

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

Fig 4: Removing Bolt On Bracket For Exhaust System And Catalytic Converter With Front Muffler

GW00028764

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove bolt - 1 - on bracket for exhaust system and remove catalytic converter with front muffler.

Fig 5: Removing Guide Pipe For Oil Dipstick From Cylinder Head

GW00026566

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove guide pipe for oil dipstick - arrow -.

Fig 6: Removing Exhaust Manifold

GW00028907

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove exhaust manifold - arrows -.

Installing

NOTE:

Replace self-locking nuts.
Replace gaskets.
Replace sealing ring for guide tube for oil dipstick.

Installation is in reverse order of removal.

Torque specifications

Bolted connections	Torque specifications
Exhaust manifold to cylinder head	25 Nm
Oil dip stick guide tube to cylinder head	22 Nm