Overview - Crankcase Ventilation, AUDI RS6 / RS7 / A8 / RSQ8 / Sq8 / Sq7

WARNING: This page is about a different car, the 2021 Audi RS 7 Sportback. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of AUDI OF AMERICA, LLC

Seal
- Replace after removing.
Hose
- Replace if damaged or leaking
- For the crankcase ventilation
- Replacing. Refer to CRANKCASE VENTILATION HOSE, REPLACING .
O-Ring
- Replace after removing.
Bolt
- 9 Nm diagonally
Oil Separator
- For cylinder bank 1 (right)
- Removing and installing. Refer to OIL SEPARATOR, REMOVING AND INSTALLING .
O-Ring
- Replace after removing.
- Grey
O-Ring
- Replace after removing.
- Red
Hose
- For the crankcase ventilation
Bolt
- 9 Nm diagonally
Grommet
Seal
- Replace if damaged
Cap
Oil Separator
- For cylinder bank 2 (left)
- Removing and installing. Refer to OIL SEPARATOR, REMOVING AND INSTALLING .
O-Ring
- Replace after removing.
- Grey
O-Ring
- Replace after removing.
- Red
Hose
- For the crankcase ventilation
O-Ring
- Replace after removing.
- Grey
O-Ring
- Replace after removing.
- Red
Hose
- For the crankcase ventilation
- Disconnect and connect the hose:
  - Audi A8. Refer to Fig 1.
  - Audi RS6/RS7. Refer to Fig 2.
Seal
- Replace after removing.
Hose
- For the crankcase ventilation
- There are different versions.
Bolt
- 9 Nm
Bolt
- 9 Nm
Bracket
- There are different versions.
Crankcase Ventilation Valve -N546-
- There are different versions.
Connection
- With check valve
Bolt
- 9 Nm
O-Ring
- Replace after removing.

Fig 1: Crankcase Ventilation Hose on the Upper Air Duct Pipe, North American Market Version

Courtesy of AUDI OF AMERICA, LLC

Fig 2: Crankcase Ventilation Hose on the Upper Air Duct Pipe, North American Market Version

Courtesy of AUDI OF AMERICA, LLC