S6 Quattro Sedan V10-5.2L (BXA) (2007)
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Remove upper section of left air filter housing.
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Remove air filter element.
Remove right air filter housing:
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Remove bolts - arrows - and remove right air duct.
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Separate vacuum lines - 4 - and - 5 -.
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Loosen hose clamp - 6 - and remove screws - 1 to 3 -.