A8L Quattro Sedan W12-6.0L (BSB) (2005)
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Lift the fuel delivery unit slightly and install the Fuel Level Sensor 4 (G393).
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Carefully press the fuel delivery unit into the support until it engages audibly.
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Insert the fuel delivery line - 1 - and the Fuel Level Sensor 4 (G393) - 2 - until it engages audibly.
Vehicles with MPI engine:
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Through the right fuel tank opening, press the fuel lines - 1 - and - 2 - onto the left fuel delivery unit until they engage audibly.