S4 V8-4.2L (BHF) (2004)
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Remove harness connectors - 1 to 4 - from bracket at left of bulkhead.
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Disconnect electrical harness connectors - 1 - and - 4 -.
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Remove bracket from bulkhead.
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Remove heat insulation sleeve on wiring harness and lay wiring harness clear.
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Move oxygen sensor wires downward.
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Remove left front wheel.
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Loosen quick-release screws - 1 -, remove screws - 2 - and remove sound insulation.
NOTE: Decoupling elements in front exhaust pipes must not be bent more than 10 danger of damage.
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Disconnect exhaust system at double clamps - arrows -.