Part I

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2020 Audi A4 allroad, 2020 Audi A4 Quattro, 2019 Audi A4 allroad, 2019 Audi A4 Quattro, and 2018 Audi A4 allroad. However, it is still accessible from the selected car via links, so may be relevant.

Part II. Refer to Part II .

Fig 1: Exploded View Of Turbocharger

Courtesy of AUDI OF AMERICA, LLC

Bolt
- 25 Nm
Oil Return Line
O-Ring
- Always replace after removing.
- Coat with engine oil
O-Ring
- Always replace after removing.
- Coat with engine oil
Turbocharger
- Removing and installing. Refer to TURBOCHARGER, REMOVING AND INSTALLING .
Nut
- Replace after removing
- Coat the stud bolts with hot bolt paste. Refer to the appropriate Electronic Parts Information.
- Tightening specification and sequence. Refer to 2
Threaded Pin
- 16 N.m
Seal
- Replace after removing.
Bracket
Coolant Return Line
Bolt
- 9 Nm
O-Ring
- Always replace after removing.
- Coat with coolant
Turbocharger Recirculation Valve -N249-
- Removing and Installing. Refer to Turbocharger Recirculating Valve -N249-, REMOVING AND INSTALLING
- Installation position. Refer to Fig 2.
Bolt
- 9 Nm
O-Ring
- Always replace after removing.
O-Ring
- Always replace after removing.
Connection
Bolt
- 9 N.m
Bolt
- 9 Nm

Turbocharger Recirculation Valve N249 Installation Position

Fig 2: Identifying Installation Position Of Turbocharger Recirculating Valve

Courtesy of AUDI OF AMERICA, LLC

-- Note the installation location -arrows-.

Turbocharger/catalytic converter threaded pin connection - tightening specifications
-- Tighten the threaded pins -arrows- to 24 N.m.

Courtesy of AUDI OF AMERICA, LLC

Turbocharger - tightening specifications and sequence

Courtesy of AUDI OF AMERICA, LLC

Replace the nuts after removing.

-- Tighten the nuts in stages in the sequence shown

Step	Nuts	Tightening Specifications
1.	-1 to 4-	Install all the way by hand
2.	-1 and 2-	10 N.m
3.	-3 and 4-	25 N.m
4.	-1 and 2-	25 N.m