A8L Quattro Sedan V8-4.2L (BVJ) (2007)
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Remove the screws - arrows - for the upper air filter housing and remove the upper housing.
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Remove the bolts - 1 and 2 -.
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Release the electrical connectors and disconnect the connectors simultaneously from the ignition coils.
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Remove the ignition coil (cylinder 4) using the (T40039).
