TorqFix

Removing and installing drain hose for fuel filler neck, version II — AUDI

Removing and installing drain hose for fuel filler neck, version II on Audi: 11 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.

11 steps

🧭 Before you start

Fits: platform code 42

Don't miss

  • Drain hose (2) must protrude from side member trim (1) by dimension (a).

📋 Procedure

  1. ⚠ When installing, make absolutely sure that the drain hose for the tank flap unit is installed properly.After installing, check that the drain pipe is installed correctly and that it drains properly by pouring some water into the tank flap unit. The water should drain out of the drain pipe at the bottom outside the side member trim. — Remove rear side panel (bottom) .
  2. Remove side panel trim .
  3. Press release button (2) and disconnect drain hose (3) for tank flap unit at drain hose (4) (bottom).
  4. Remove bolts (1).
  5. Move drain hose clear (arrow) and detach.
AUDI? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Route drain hose (4) (bottom) as shown in illustration and secure to body with retaining clips (1).
  2. Press drain hose into mounting (arrow).
  3. Push drain hose (3) for tank flap unit onto drain hose (2) (bottom) until it engages audibly.
  4. Drain hose (2) must protrude from side member trim (1) by dimension (a).
  5. Adjust dimension (a) if necessary.
  6. Install side panel trim .

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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.

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Workshop data on this page last updated 20 Sep 2026.