Exhaust Manifold and Front Exhaust Pipe with Catalytic Converters Assembly Overview
Exhaust Manifold and Front Exhaust Pipe with Catalytic Converters Assembly Overview
1 Electrical Connector
• Black, 6 pin.
2 Heated Oxygen Sensor (G39), 55 Nm
• Bank 1, sensor 1.
• Installed in the exhaust gas stream of cylinders 1, 2 and 3.
• Only use hot bolt paste (G 052 112 A3) to grease the threads; do not let the hot bolt paste (G 052 112 A3) get onto the slits in the oxygen sensor body,
• Use the ring spanner 7-piece set (3337) for removal and installation.
3 Heated Oxygen Sensor (HO2S) 2 (G108), 55 Nm
• Bank 2, sensor 1.
• Installed in the exhaust gas stream of cylinders 4, 5 and 6.
• Only use hot bolt paste (G 052 112 A3) to grease the threads; do not let the hot bolt paste (G 052 112 A3) get onto the slits in the oxygen sensor body,
• Use the ring spanner 7-piece set (3337) for removal and installation.
4 Electrical Connector
• Brown, 6 pin.
5 Nut, 40 Nm
• Always replace.
6 Oxygen Sensor (O2S) 2 behind Three Way Catalytic Converter (TWC) (G131), 55 Nm
• Bank 2, sensor 2.
• Installed in the exhaust gas stream of cylinders 4, 5 and 6.
• Only use hot bolt paste (G 052 112 A3) to grease the threads; do not let the hot bolt paste (G 052 112 A3) get onto the slits in the oxygen sensor body.
• Use the ring spanner 7-piece set (3337) for removal and installation.
7 Electrical Connector
• Brown, 4 pin
8 Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC) (G130), 55 Nm
• Bank 2, sensor 1.
• Installed in the exhaust gas stream of cylinders 1, 2 and 3.
• Only use hot bolt paste (G 052 112 A3) to grease the threads; do not let the hot bolt paste (G 052 112 A3) get onto the slits in the oxygen sensor body.
• Use the ring spanner 7-piece set (3337) for removal and installation.
9 Electrical Connector
• Black, 4 pin.
10 Bolt, 20 Nm
11 Intake Manifold Support, Front
12 Exhaust Manifold Heat Shield
13 Intake Manifold Support, Rear
14 Bolt, 20 Nm
15 Bolt, 20 Nm
16 Gasket
• Always replace.
17 Exhaust Manifold
18 Nut, 25 Nm
• Always replace
19 to Center Muffler
• See - item 4 - in => [ Muffler and Mounts Assembly Overview ] Service and Repair.
20 Bolt, 25 Nm
21 Suspended Mount
• For the front exhaust pipe.
22 Catalytic Converter
• Installed in exhaust stream of cylinder 1, 2 and 3 on right side as well as 4, 5 and 6 on left side.
23 Front Exhaust Pipe
• With flex joint.
• Do not bend the decoupling element more than 20 degrees when removing or it may be damaged.
• Front exhaust pipe with catalytic converter, removing and installing. Refer to => [ Front Exhaust Pipe with Catalytic Converters ] Front Exhaust Pipe with Catalytic Converters.