S6 Quattro Sedan V10-5.2L (BXA) (2007)
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Unscrew bolts - arrows - and remove air guide.
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Disconnect electrical harness connector - 1 - at Engine Coolant Temperature (ECT) Sensor G62.
NOTE: Disregard - item 2 - and - item 3 -.
Installation is performed in the reverse order of removal.