S5 Quattro Coupe V8-4.2L (CAUA) (2009)
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Remove the engine cover - 2 -.
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Remove the air filter housing bolts - arrows -.
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Remove the air guide hoses - 1 - and - 6 - from the air filter housing.
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Loosen the hose clamps - 2 - and - 4 - and remove the air filter housing.
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Disconnect the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) electrical harness connector - 4 -.
