TorqFix

Removing and installing sealing flange: Audi Q7 3.6 (BHK, BHL)

Step-by-step removing and installing sealing flange for the Audi Q7 3.6 (BHK/BHL): 18 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.

18 steps 2 engine codes

🧭 Before you start

Fits: Audi Q7 (4L, 2005–2015)

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  • Make sure sealant residue does not enter lubrication system.Place a clean cloth over the exposed section of the sump. — Carefully remove sealant residue on cylinder block and sump.
  • Risk of eye injury.Wear safety goggles. — Remove sealant residue on sealing flange using rotating plastic brush or similar.
  • Clean sealing surfaces; they must be free of oil and grease.
  • Cut off nozzle of tube at front marking (diameter of nozzle approx. 2 mm).
  • Fit sealing flange within 5 minutes after applying sealant.

🔧 Engine codes this applies to

📋 Procedure

  1. Activate jacking mode on vehicles with air suspension 43.
  2. Remove poly V-belt .
  3. Remove vibration damper .
  4. Unscrew bolts and remove noise insulation (front) (1).
  5. Remove bolts (1 ... 11).
BHK? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Carefully lever off sealing flange.
  2. ⚠ Make sure sealant residue does not enter lubrication system.Place a clean cloth over the exposed section of the sump. — Carefully remove sealant residue on cylinder block and sump.
  3. ⚠ Risk of eye injury.Wear safety goggles. — Remove sealant residue on sealing flange using rotating plastic brush or similar.
  4. Clean sealing surfaces; they must be free of oil and grease.
  5. Cut off nozzle of tube at front marking (diameter of nozzle approx. 2 mm).
  6. Apply a thin bead of sealant at the edge of the joint between the cylinder block and the sump (arrows).
  7. Apply a thin coat of sealant to bottom sealing surface (shaded) on sealing flange.
  8. Apply bead of sealant (arrow) onto clean sealing surface of sealing flange as shown in illustration. [Note: Fit sealing flange within 5 minutes after applying sealant.]
  9. ⚠ Make sure oil strainer is not clogged by excess sealant.The bead of sealant must not be thicker than specified. — Carefully push sealing flange over assembly tool T10215 onto dowel pins (arrows) on cylinder block.
  10. Tighten sealing flange bolts .
  11. Install vibration damper .
  12. Install poly V-belt .
  13. De-activate jacking mode on vehicles with air suspension 43.

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.