Overview - Muffler, AUDI A4/A5, Without Catalytic Converter And Particulate Filter

Fig 1: Exploded View Of Muffler, Audi A4/A5, Without Catalytic Converter And Particulate Filter

Courtesy of AUDI OF AMERICA, LLC

1. Center Muffler
   • Original equipment as one unit with rear mufflers. If a repair is required replace each separately
   • Separating point. Refer to EXHAUST PIPES/MUFFLERS, DISCONNECTING .
   • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
2. Retaining Loop
   • Replace if damaged
   • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
3. Bolt
   • 23 Nm
4. Bracket
5. Front Muffler
   • With coupling:
     • Do not bend more than 10°
     • Do not load on cable
     • Do not damage wire mesh at decoupling element
   • Individual components of the mounting. Refer to Fig 3.
   • Removing and Installing. Refer to FRONT MUFFLER, REMOVING AND INSTALLING, CATALYTIC CONVERTER WITHOUT PARTICULATE FILTER .
   • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
6. Seal
   • Replace after removing
7. Nut
   • 23 Nm
   • Replace after removing
8. Bolt
   • 23 Nm
9. Mount
   • Replace if damaged
   • Check the pretension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
10. Front Clamping Sleeve
    • Tighten the threaded connections equally to 23 Nm.
    • Before tightening, align the exhaust system without tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
    • Installation position. Refer to Fig 2.
11. Rear Muffler
    • Original equipment one unit with the center muffler. If a repair is required replace each separately
    • Separating point. Refer to EXHAUST PIPES/MUFFLERS, DISCONNECTING .
    • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
12. Mount
    • Replace if damaged
    • Check the pretension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
13. Bolt
    • 23 Nm
14. Rear Clamping Sleeve
    • Tighten the threaded connections equally to 23 Nm.
    • Before tightening, align the exhaust system without tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
    • Installation position. Refer to Figure.
15. Bracket
16. Bolt
    • 23 Nm
17. Retaining Loop
    • Replace if damaged
    • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .

Front Clamping Sleeve - Installation Position 

Fig 2: Identifying Clamping Sleeve Position

Courtesy of AUDI OF AMERICA, LLC

-- Install the clamping sleeve in the position shown.

• Angle -α- = approximately 20°.
• The threaded connections are to the right.
• Nuts downward.

Individual Mounting Components for Front Muffler

Fig 3: Front Muffler Mounting Replacement Part, Vehicle without Particulate Filter

Courtesy of AUDI OF AMERICA, LLC

1. Spacer Sleeve
2. Pressure Spring
3. Washer
4. Bolt - 23 Nm
5. Bolt - 23 Nm
6. Spacer Sleeve
7. Buffer
8. Tab
9. Spacer Sleeve