A8L V8-4.2L (BFM) (2004)
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Disconnect the lower right coolant hose from the radiator - arrow - and drain the coolant.
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Disconnect the lower left coolant hose from the radiator - arrow -.
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If present, remove the left coolant hose in the center of the radiator - arrow -.
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Disconnect the upper right coolant hose from the radiator - arrow -.