Overview - Exhaust Manifold

Fig 1: Exhaust Manifold Assembly Overview

Courtesy of AUDI OF AMERICA, LLC

1. Nut
   • Replace
   • Coat the thread with hot bolt paste.
   • Tightening specification and sequence: left, refer to Fig 2, right, refer to Fig 3
2. Bracket for Heat Shield
3. Exhaust Manifold
   • Removing and installing. Refer to LEFT EXHAUST MANIFOLD, REMOVING AND INSTALLING  and RIGHT EXHAUST MANIFOLD, REMOVING AND INSTALLING .
4. Seal
   • Replace
5. Heat Shield
6. Bolt
   • 9 Nm
7. Heated Oxygen Sensor
   • Before catalytic converter
   • Removing and installing. Refer to HEATED OXYGEN SENSOR, REMOVING AND INSTALLING .
8. Catalytic Converter
   • Overview. Refer to OVERVIEW - MUFFLER .
9. Nut
   • 23 Nm
   • Replace
   • Coat the thread with hot bolt paste.
10. Seal
    • Replace

Fig 2: Exhaust Manifold Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the nuts in the three steps in the sequence shown:

Fig 3: Exhaust Manifold Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the nuts in the three steps in the sequence shown: