S4 Quattro Wagon V8-4.2L (BHF) (2008)
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Disconnect electrical harness connector - arrow - for Camshaft Position (CMP) Sensor (G40) on right cylinder head.
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Remove Ground (GND) wire on right cylinder head - arrow -.
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Set wiring harness aside.
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Remove bolts - 1 to 6 - and remove left timing chain cover.