A6 V6-3.0L (AVK) (2004)
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Remove coolant hose -4-.
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Remove bolts -2- and nut -5- and remove hose for secondary air injection.
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Disconnect vacuum hose -3- from combination valve.
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Remove bolts -1- and remove combination valve for secondary air injection.
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Remove coolant hose -6-.
Note: Illustration is shown with engine removed.
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Disconnect electrical harness connector -2- at Engine Coolant Temperature (ECT) Sensor -G2-/G62-.
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Disconnect hydraulic line of power steering at rear coolant pipe -1-.
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Remove screw clips for electrical wiring harness at rear coolant pipe.
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Expose electrical wires at rear coolant pipe.
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Remove bolts -1- and -2-.
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Remove catalytic converter toward rear.
Installing
Installation is reverse of removal, noting the following:
Notes: