A8L V8-4.2L (BFM) (2004)
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Remove hose -arrow- to secondary air pump at bottom of air filter housing.
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Remove air hose -2- at air filter housing.
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Disconnect electrical connection -1-.
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Remove bolts -arrows- and remove air filter housing (DO NOT separate air filter housing assembly).
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Remove coolant hose from coolant pipe -arrow- (illustration shows hose removed).
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Remove bolt -1- and mounting plate -2- from ,the top generator coolant pipe connection.