A6 Quattro Sedan V8-4.2L (BVJ) (2007)
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Disconnect vacuum line.
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Remove pin of expanding clip - 3 -.
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Remove lower air filter housing and disconnect electrical harness connector - 2 - at rear.
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Disconnect hose - 1 - to Secondary Air Injection (AIR) pump.
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Remove lower air filter housing.
Installation is performed in the reverse order of removal.
Air filter housing, removing - vehicles with 4.2l FSI engine
Work procedure
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Remove bolts - arrows -.
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Remove air guides - 1 and 2 -.
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Lay aside fuel line and line to EVAP canister at air filter housing and air guide pipe.
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Disconnect electrical harness connector - 1 - at Mass Air Flow (MAF) Sensor G70.
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Disconnect vacuum line - 3 - to air duct hose.
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Lay aside air guide hose with hose for crankshaft housing ventilation - 2 - connected, release hose clamp - 4 - and open clips - arrows - to do so.
CAUTION:
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Do not disconnect hose connection - 2 -.
Danger of violating emissions regulation for US vehicles.