A8L V8-4.2L (BFM) (2004)
‹› With 4.2L engines, vacuum hose flap - arrow - must be disconnected.
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Remove screws - arrows - from air filter housing and remove upper part of housing.
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Remove air filter insert.
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Cover open air filter housing with a clean cloth.
‹› Make sure that no dirt gets into air filter housing.
Installing