RS 4 Quattro Cabriolet V8-4.2L (BNS) (2008)
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Remove bolts - arrows - at secondary air injection pump bracket with Intake Air Switch-Over valve (N335) bracket.
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Remove right wheel housing liner in forward area.
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Remove hose - 2 - to the air filter housing upper section at secondary air injection pump - 1 - by pressing release buttons.
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Release electrical wiring harness bracket - 3 -.
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Open the quick-release fasteners - 1 -, remove the screws - 2 - and then remove the noise insulation.
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Separate the electrical connector - 5 -.