Removing air cleaner housing - vehicles with 4.2 ltr. FSI engine — AUDI
Removing air cleaner housing - vehicles with 4.2 ltr. FSI engine on Audi: 10 steps. What to remove, in what order, and what to check after.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A6 C6 (4F, 2004–2011)
Don't miss
- Disregard (item 5).
- Avoid violation of laws concerning exhaust emissions on USA vehicles.Do not open hose connection (2). — Release retainers (arrows) and detach air cleaner (top section).
📋 Procedure
- Unscrew bolts (arrows).
- Remove air ducts (1 and 2).
- Move fuel line and line going to activated charcoal filter clear at air cleaner housing and at air pipe.
- Unplug electrical connector (1) at air mass meter G70.
- Detach vacuum line (3) going to air intake hose.
- Move air intake hose with connected crankcase breather hose (2) clear. To do so, release hose clip (4) and clamps (arrows). [Note: Disregard (item 5).]
- ⚠ Avoid violation of laws concerning exhaust emissions on USA vehicles. Do not open hose connection (2). — Release retainers (arrows) and detach air cleaner (top section).
- Disconnect vacuum line (1).
- Pull pin out of fastener (4).
- Detach air cleaner (bottom section) and unplug electrical connector (2) on reverse side at variable intake manifold change-over valve N335.
Other AUDI procedures
- Removing and installing toothed belt – Audi · 56 torque figures
- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
- Removing and installing camshaft timing chain · 29 torque figures
- Removing and installing cover with air intake unit flap
- Removing and installing main fuse box (right A-pillar)
- Bleeding clutch system - manual gearbox
- Removing and installing gear detection sensor 2G616
- Removing and installing side airbag with side airbag igniter on driver side N199 or side airbag igniter on front passenger side N200
Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix → · How these pages are made →Workshop data on this page last updated 20 Sep 2026.