A8L V8-4.2L (BFM) (2004)
‹› When loosening bolt - 1 -, secure threaded plate against falling off.
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Remove bolts - 1 through 3 - and remove left side part of intake manifold.
Right side
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Remove right cover in engine compartment - arrows -.
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Remove right air guide hose - arrows -.
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Remove oil filler tube cap.