TorqFix

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.

10 steps

🧭 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

  1. Unscrew bolts (arrows).
  2. Remove air ducts (1 and 2).
  3. Move fuel line and line going to activated charcoal filter clear at air cleaner housing and at air pipe.
  4. Unplug electrical connector (1) at air mass meter G70.
  5. Detach vacuum line (3) going to air intake hose.
AUDI? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. 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).]
  2. ⚠ 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).
  3. Disconnect vacuum line (1).
  4. Pull pin out of fastener (4).
  5. Detach air cleaner (bottom section) and unplug electrical connector (2) on reverse side at variable intake manifold change-over valve N335.

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

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Workshop data on this page last updated 20 Sep 2026.