Overview - Muffler, Fwd Vehicle

Fig 1: Exploded View Of Muffler (FWD Vehicles)

Courtesy of AUDI OF AMERICA, LLC

1. Retaining Loop
   • Always replace if damaged
   • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
2. Bolt
   • 23 Nm
3. Bracket
4. Center Muffler
   • Original equipment as one unit with the rear 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 .
5. Bolt
   • 23 Nm
6. Bracket
7. Retaining Loop
   • Always replace if damaged
   • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
8. Front Muffler
   • With coupling:
     • Do not bend more than 10°
     • Do not load on cable
     • Do not damage wire mesh at decoupling element
   • Removing and installing. Refer to FRONT MUFFLER, REMOVING AND INSTALLING .
   • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
9. Gasket
   • Always replace after removing.
10. Nut
    • 23 Nm
11. Mount
    • Always replace if damaged
    • Check the pretension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
    • Equipped on some models
12. Bolt
    • 23 Nm
13. Front Clamping Sleeve
    • Before tightening, align the exhaust system without tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
    • Tighten the threaded connections equally to 23 Nm.
    • Installation position. Refer to Fig 3.
14. Retaining Loop
    • Always replace if damaged
    • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
15. Bracket
16. Bolt
    • 23 Nm
17. 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 .
18. Rear Clamping Sleeve
    • Before tightening, align the exhaust system without tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
    • Tighten the threaded connections equally to 23 Nm.
    • Installation position. Refer to Fig 4.

Individual Mounting Components for Front Muffler 

Fig 2: 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

Front Clamping Sleeve - Installation Position 

Fig 3: 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.

Rear Clamping Sleeve - Installation Position 

Fig 4: Double Clamps

Courtesy of AUDI OF AMERICA, LLC

-- Install the clamping sleeve in the position shown.

• Threaded connections are to the left.
• Nuts downward.
• Bolt ends must not protrude over the lower edge of the clamping sleeve.