Removing and installing front silencer: Audi A4 B9 (CAEB, CAED, CAKA, CALB, …)
Step-by-step removing and installing front silencer for the Audi A4 B9: 9 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 A4 B9 (8W, 2015–)
- Renewed: seals
Don't miss
- Renew seals, gaskets and self-locking nuts.
🔧 Engine codes this applies to
📋 Procedure
- Remove engine cover panel .
- Remove nuts (1) (accessible from above) for front silencer.
- Remove noise insulation (rear) General body repairs, exterior66Noise insulation; Exploded view - noise insulation.
- Remove nut (2) and bolt (3) for front silencer.
- Unscrew bolts (arrows) for front silencer.
- Loosen clamp (arrows) and push towards rear.
- ⚠ Risk of damage to flexible joint. Do not bend flexible joint more than 10°.Install flexible joint so that it is not under tension.Take care not to damage wire mesh on flexible joint. — Detach front silencer. [Note: Renew seals, gaskets and self-locking nuts.]
- Align the exhaust system so it is free of stress .
- Install engine cover panel .
Other AUDI procedures
- Checking fuel gauge senderG - A5 up to model year 2011, A4 up to model year 2012, rest-of-world vehicles with front-wheel drive
- Removing and installing activated charcoal filter solenoid valve 1N80, vehicles with all engine codes except CFKA, CPMA, CPMB
- Removing and installing honeycomb filter – Audi A6/A7 C7 2.0
- Installing cylinder head - all vehicles – Audi A6/A7 C7 2.0
- Checking fuel gauge senderG, vehicles from model year 2013 onwards
- 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
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 →Workshop data on this page last updated 20 Sep 2026.