A4 Quattro Wagon V6-3.2L (BKH) (2005)
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Remove bolts - arrows -.
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Remove air duct - 1 - and - 2 -.
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Disconnect check valve - 1 - from air duct hose.
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Remove air duct hose, thereby loosening hose clamp - 2 - and opening clips - arrows -.
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Remove pin from spreader clips - arrow -.
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Remove air filter housing.
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Disconnect electrical harness connectors.
1. Engine coolant temperature (ECT) sensor G62
2. Intake Manifold Flap Change-over Valve N239
Note: Ignore - Pos. 3 -.