A6 Quattro Wagon V6-3.2L (BKH) (2006)
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Remove the rear engine cover - arrows -.
Cylinder bank 1 (right):
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Remove the air duct screws - arrows -.
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Remove the air ducts - 1 - and - 2 -.
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Remove the check valve - 1 - from the air duct hose.
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Loosen the hose clamp - 2 -, release the retaining clips - arrows -, and remove the air duct hose.