Muffler Overview
Muffler Overview
1 Bolt
• 20 Nm
2 Suspended Mount
• Replace if damaged
• Check pretension, refer to => [ Exhaust System, Installing ] Service and Repair
3 Center Muffler
• Original equipment as one unit with rear mufflers. For repairs, replace each separately.
• For removal, remove the diagonal braces, refer to => [ Audi A7 Diagonal Braces ]
• Separating point, refer to => [ Center Muffler and Rear Muffler, Separating ] Center Muffler and Rear Muffler, Separating
• Install exhaust system free of stress, refer to => [ Exhaust System, Installing ] Service and Repair
4 Rear Muffler
• Original equipment as one unit with center muffler
• The center muffler and the rear muffler can be replaced individually if a repair is required.
• For removal, remove the diagonal braces, refer to => [ Audi A7 Diagonal Braces ]
• Separating point between center and rear muffler, refer to => [ Center Muffler and Rear Muffler, Separating ] Center Muffler and Rear Muffler, Separating
• Install exhaust system free of stress, refer to => [ Exhaust System, Installing ] Service and Repair
5 Gasket
• Replace
6 Nut
• 23 Nm
7 Catalytic Converter
• Protect from shocks and impact stress
• Removing and installing:
• Vehicles with S-Tronic transmission left, refer to => [ Left Catalytic Converter ] Left Catalytic Converter
• Vehicles with S-Tronic transmission right, refer to => [ Right Catalytic Converter ] Right Catalytic Converter
• Vehicles with an automatic transmission, refer to => [ Catalytic Converters ] Catalytic Converters
• Individual components of suspension, refer to => [ Individual Catalytic Converter Mounting Components. ]
8 Nut
• 23 Nm
9 Gasket
• Replace
10 Front Muffler
• With decoupling element, decoupling element must not be bent more than 10° - otherwise it may be damaged
• Removing and installing, refer to => [ Front Muffler ] Front Muffler
• Install exhaust system free of stress, refer to => [ Exhaust System, Installing ] Service and Repair
11 Front Clamping Sleeve
• Installed location, refer to => [ Installed Position of Front Double Clamps ]
• Pushed all the way onto the front muffler
• Before tightening, align exhaust system tension-free, refer to => [ Exhaust System, Installing ] Service and Repair
• Tighten threaded connections evenly.
12 Nut
• 23 Nm
13 Hood
• For the tail pipe
• Push all the way onto the tail pipe
14 Suspended Mount
• Replace if damaged
• Check pretension, refer to => [ Exhaust System, Installing ] Service and Repair
15 Nut
• 20 Nm
• Replace
16 Rear Clamping Sleeve
• For individual replacement of center and rear mufflers
• Installed location, refer to => [ Installed Position of Rear Double Clamps ]
• Before tightening, align exhaust system tension-free, refer to => [ Exhaust System, Installing ] Service and Repair
• Tighten threaded connections evenly.
17 Nut
• 23 Nm
18 Bolt
• 23 Nm
19 Suspended Mount
• Replace if damaged
• Check pretension, refer to => [ Exhaust System, Installing ] Service and Repair
Installed Position of Front Double Clamps
- Install double clamps so that the bolt ends do not project over lower edge of double clamp.
• Installation position: Threaded connections point toward outside.
Installed Position of Rear Double Clamps
- Install double clamps so that the bolt ends do not project over lower edge of double clamp.
• Installation position: Threaded connections point forward.
Individual Catalytic Converter Mounting Components.
1. Nut - 23 Nm
2. Spacer sleeve
3. Spring
4. Washer
5. Bolt
6. Bolt - 23 Nm
7. Spacer sleeve
8. Buffer
9. Tab
10. Bolt - 23 Nm
11. Bracket
• The right suspended mount is shown in the illustration. The left suspended mount is identical.
Audi A7 Diagonal Braces
- To remove, remove the diagonal braces for the center and rear mufflers - 1 - and - 2 -.
- Install diagonal braces.